National Library of Energy BETA

Sample records for heaped rock material

  1. Heap Assumptions on Demand Andreas Podelski1

    E-Print Network [OSTI]

    Wies, Thomas

    Heap Assumptions on Demand Andreas Podelski1 , Andrey Rybalchenko2 , and Thomas Wies1 1 University checker and shape analysis. The shape analysis pro- duces heap assumptions on demand to eliminate.e., it applies shape analysis on demand. The shape analysis produces a heap assumption, which is an assertion

  2. Superhard nanophase cutter materials for rock drilling applications

    SciTech Connect (OSTI)

    Voronov, O.; Tompa, G.; Sadangi, R.; Kear, B.; Wilson, C.; Yan, P.

    2000-06-23

    The Low Pressure-High Temperature (LPHT) System has been developed for sintering of nanophase cutter and anvil materials. Microstructured and nanostructured cutters were sintered and studied for rock drilling applications. The WC/Co anvils were sintered and used for development of High Pressure-High Temperature (HPHT) Systems. Binderless diamond and superhard nanophase cutter materials were manufactured with help of HPHT Systems. The diamond materials were studied for rock machining and drilling applications. Binderless Polycrystalline Diamonds (BPCD) have high thermal stability and can be used in geothermal drilling of hard rock formations. Nanophase Polycrystalline Diamonds (NPCD) are under study in precision machining of optical lenses. Triphasic Diamond/Carbide/Metal Composites (TDCC) will be commercialized in drilling and machining applications.

  3. Rocks

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservation of Fe(II) byMultidayAlumni > The Energy Materials CenterRobotics KeyRocks Rocks

  4. Colton Heaps | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyTher i n c i p aDepartment of Energyof theAction No.DepartmentColton Heaps -

  5. Engineering assessment of inactive uranium mill tailings: Slick Rock sites, Slick Rock, Colorado

    SciTech Connect (OSTI)

    none,

    1981-09-01

    Ford, Bacon and Davis Utah, Inc., has reevaluated the Slick Rock sites in order to revise the October 1977 engineering radioactive uranium mill tailings at Slick Rock, Colorado. This engineering assessment has included the preparation of topographic maps, the performance of core drillings and radiometric measurements sufficient to determine areas and volumes of tailings and radiation exposures of individuals and nearby populations, the investigations of site hydrology and meteorology, and the evaluation and costing of alternative corrective actions. Radon gas released from the 387,000 tons of tailings at the Slick Rock sites constitutes the most significant environmental impact, although windblown tailings and external gamma radiation also are factors. The five alternative actions presented in this engineering assessment include millsite decontamination with the addition of 3 m of stabilization cover material, consolidation of the piles, and removal of the tailings to remote disposal sites and decontamination of the tailings sites. Cost estimates for the five options range from about $6,800,000 for stabilization in-place, to about $11,000,000 for disposal at a distance of about 6.5 mi. Three principal alternatives for the reprocessing of the Slick Rock tailings were examined: heap leaching; treatment at an existing mill; and reprocessing at a new conventional mill constructed for tailings reprocessing. The cost of the uranium recovered would be over $800/lb of U/sub 3/O/sub 8/ whether by conventional or heap leach plant processes. The spot market price for uranium was $25/lb early in 1981. Therefore, reprocessing the tailings for uranium recovery is not economically attractive at present, nor for the foreseeable future.

  6. Summary of the engineering assessment of inactive uranium mill tailings: Slick Rock sites, Slick Rock, Colorado

    SciTech Connect (OSTI)

    none,

    1981-09-01

    Ford, Bacon and Davis Utah, Inc., has reevaluated the Slick Rock sites in order to revise the October 1977 engineering assessment of the problems resulting from the existence of radioactive uranium mill tailings at Slick Rock, Colorado. This engineering assessment has included the preparation of topographic maps, the performance of core drillings and volumes of tailings and radiation exposures of individuals and nearby populations, the investigations of site hydrology and meteorology, and the evaluation and costing of alternative corrective actions. Radon gas released from the 387,000 tons of tailings at the Slick Rock sites constitutes the most significant environmental impact, although windblown tailings and external gamma radiation also are factors. The five alternative actions presented in this engineering assessment include millsite decontamination with the addition of 3 m of stabilization cover material, consolidation of the piles, and removal of the tailings to remote disposal sites and decontamination of the tailings sites. Cost estimates for the five options range from about $6,800,000 for stabilization in-place, to about $11,000,000 for disposal at a distance of about 6.5 mi. Three principal alternatives for the reprocessing of the Slick Rock tailings were examined: heap leaching; treatment at an existing mill; and reprocessing at a new conventional mill constructed for tailings reprocessing. The cost of the uranium recovered would be over $800/lb of U/sub 3/O/sub 8/ whether by conventional or heap leach plant processes. The spot market price for uranium was $25/lb early in 1981. Therefore, reprocessing the tailings for uranium recovery is not economically attractive at present, nor for the foreseeable future.

  7. Abstract Interpretation with Alien Expressions and Heap Structures

    E-Print Network [OSTI]

    Leino, K. Rustan M.

    Abstract Interpretation with Alien Expressions and Heap Structures Bor-Yuh Evan Chang0, and K constraint mentions other, alien, function or relation symbols, it is ignored (that is, it is very coarsely over-approximated) by the abstract domain. Rather than building in special treatment of such alien

  8. Abstract Interpretation with Alien Expressions and Heap Structures

    E-Print Network [OSTI]

    Chang, Bor-Yuh Evan

    Abstract Interpretation with Alien Expressions and Heap Structures Bor-Yuh Evan Chang1, and K function and relation symbols. If a given constraint mentions other, alien, function or relation symbols in special treatment of such alien symbols in each ab- stract domain, we propose a coordinating congruence

  9. Abstract Interpretation with Alien Expressions and Heap Structures

    E-Print Network [OSTI]

    Chang, Bor-Yuh Evan

    Abstract Interpretation with Alien Expressions and Heap Structures Bor­Yuh Evan Chang 1, # and K supported function and relation symbols. If a given constraint mentions other, alien, function or relation than building in special treatment of such alien symbols in each ab­ stract domain, we propose

  10. Sedimentary Rocks, Processes, and Environments Sediments are loose grains and chemical residues of earth materials, which include things such as

    E-Print Network [OSTI]

    Li, X. Rong

    Sedimentary Rocks, Processes, and Environments Sediments are loose grains and chemical residues, and rust (oxidized iron). Formation of Sediments All sediments have a source or provenance, a place and sediments. Erosion and Transportation of Sediments Weathered materials are transported via wind, water

  11. Power-law connections: From Zipf to Heaps and beyond

    SciTech Connect (OSTI)

    Eliazar, Iddo I.; Cohen, Morrel H.

    2013-05-15

    In this paper we explore the asymptotic statistics of a general model of rank distributions in the large-ensemble limit; the construction of the general model is motivated by recent empirical studies of rank distributions. Applying Lorenzian, oligarchic, and Heapsian asymptotic analyses we establish a comprehensive set of closed-form results linking together rank distributions, probability distributions, oligarchy sizes, and innovation rates. In particular, the general results reveal the fundamental underlying connections between Zipf’s law, Pareto’s law, and Heaps’ law—three elemental empirical power-laws that are ubiquitously observed in the sciences. -- Highlights: ? The large-ensemble asymptotic statistics of rank distributions are explored. ? Lorenzian, oligarchic, and Heapsian asymptotic analyses are applied. ? Associated oligarchy sizes and induced innovation rates are analyzed. ? General elemental statistical connections are established. ? The underlying connections between Zipf’s, Pareto’s and Heaps’ laws are unveiled.

  12. Evidence for the incorporation of lead into barite from waste rock pile materials

    E-Print Network [OSTI]

    COURTIN-NOMADE, ALEXANDRA

    2009-01-01

    waste rock associated with acid drainage at the Penn Mine,in urban runoff, acid mine drainage, and contaminatedof waters affected by acid mine drainage and nonaffected

  13. Evidence for the incorporation of lead into barite from waste rock pile materials

    E-Print Network [OSTI]

    COURTIN-NOMADE, ALEXANDRA

    2009-01-01

    ed in the iron hardpan of the mining site and constitutes airon hardpans developed within waste rock pile originated from a former mining

  14. Evidence for the incorporation of lead into barite from waste rock pile materials

    SciTech Connect (OSTI)

    COURTIN-NOMADE, ALEXANDRA; SOUBRAND-COLIN, MARILYNE; MARCUS, MATTHEW A.; FAKRA, SIRINE .C

    2008-01-21

    Because Pb is one of the most toxic elements and is found as a major contaminant in mining environments, this study aims to identify the distribution of this element in host phases issued from the alteration of mine wastes. The sampling location was a former mine near Oakland, California (USA). This mine was once a source of sulfide minerals from which sulfuric acid was made. The material discussed in this paper was collected in iron hardpans that were formed within the waste rock pile resulting from the excavation work. In most contaminated environments (soils, mine waste), secondary metal-bearing phases arising from alteration processes are usually fine-grained (from 10 {micro}m to less than 1 {micro}m) and highly heterogeneous, requiring the use of micron-scale techniques. We performed micro-Raman spectroscopy, microscanning X-ray diffraction (SXRD), and microextended X-ray near edge spectroscopy (XANES) to determine the relationships between Pb and a Ba/Fe-rich host phase. Micro-Raman spectroscopy suggests that Pb is preferentially incorporated into barite rather than goethite. Results from micro-Raman experiments show the high sensitivity of this analytical tool to the incorporation of Pb into barite by being especially sensitive to the variations of the S-O bond and showing the characteristic bands due to the contribution of Pb. This association is confirmed and is well-illustrated by micro-SXRD mineral species maps showing the correlation between Pb and barite. Microfocused XANES indicates that Pb is present as Pb{sup 2+}, agreeing with the in situ physicochemical parameters.

  15. Event heap: a coordination infrastructure for dynamic heterogeneous application interactions in ubiquitous computing environments

    DOE Patents [OSTI]

    Johanson, Bradley E.; Fox, Armando; Winograd, Terry A.; Hanrahan, Patrick M.

    2010-04-20

    An efficient and adaptive middleware infrastructure called the Event Heap system dynamically coordinates application interactions and communications in a ubiquitous computing environment, e.g., an interactive workspace, having heterogeneous software applications running on various machines and devices across different platforms. Applications exchange events via the Event Heap. Each event is characterized by a set of unordered, named fields. Events are routed by matching certain attributes in the fields. The source and target versions of each field are automatically set when an event is posted or used as a template. The Event Heap system implements a unique combination of features, both intrinsic to tuplespaces and specific to the Event Heap, including content based addressing, support for routing patterns, standard routing fields, limited data persistence, query persistence/registration, transparent communication, self-description, flexible typing, logical/physical centralization, portable client API, at most once per source first-in-first-out ordering, and modular restartability.

  16. DR. H. STANLEY AND DOREEN ALLEY HEAPS CHAIR IN COMPUTING SCIENCE Department of Mathematics, Statistics & Computer Science

    E-Print Network [OSTI]

    DR. H. STANLEY AND DOREEN ALLEY HEAPS CHAIR IN COMPUTING SCIENCE Department of Mathematics, Statistics & Computer Science St. Francis Xavier University Nominations are now invited for the position of Alley Heaps Chair Professor in Computing Science. The principal objective of the Dr. H. Stanley

  17. Control Theory for Principled Heap Sizing David R. White Jeremy Singer

    E-Print Network [OSTI]

    Singer, Jeremy

    algorithm, and evaluate its performance on a set of well-known benchmarks. We find our controller adapts strategies Keywords Heap Size; Control Theory; Virtual Machines; Jikes RVM; HotSpot; Ergonomics 1]. With the exception of HotSpot's ergonomics functionality [30] most VMs do not provide users with the facility

  18. How to safely compost Cameraria ohridella-infested horse chestnut leaf litter on private compost heaps

    E-Print Network [OSTI]

    Richner, Heinz

    How to safely compost Cameraria ohridella-infested horse chestnut leaf litter on private compost the deposition of pest-infested litter on private compost heaps was dissuaded because of the risk of leafminer emergence in the following spring. Thus, the aim of this study was to test safe ways to compost pest

  19. Wireless Sensor Networks Powered by Ambient Energy Harvesting (WSN-HEAP) Survey and

    E-Print Network [OSTI]

    Shihada, Basem

    Wireless Sensor Networks Powered by Ambient Energy Harvesting (WSN-HEAP) ­ Survey and Challenges and Engineering National University of Singapore, Singapore Email: g0601792@nus.edu.sg Abstract--Wireless sensor is to convert the ambient energy from the environment into electricity to power the sensor nodes. While

  20. Wireless Sensor Networks Powered by Ambient Energy Harvesting (WSN-HEAP) Survey and

    E-Print Network [OSTI]

    Shihada, Basem

    Wireless Sensor Networks Powered by Ambient Energy Harvesting (WSN-HEAP) ­ Survey and Challenges networks (WSNs) research has pre- dominantly assumed the use of a portable and limited energy source, viz. batteries, to power sensors. Without energy, a sensor is essentially useless and cannot contribute

  1. Rock Art

    E-Print Network [OSTI]

    Huyge, Dirk

    2009-01-01

    Courtesy of the Royal Museums of Art and History, Brussels.Figure 4. Rock art from Abu Ballas caravan station, 550 kmtypical of Pharaonic rock art. Kharga Oasis. Photograph by

  2. XXI ICTAM, 1521 August 2004, Warsaw, Poland IMPACT FRACTURE OF ROCK MATERIALS DUE TO PERCUSSIVE DRILLING ACTION

    E-Print Network [OSTI]

    Krivtsov, Anton M.

    DRILLING ACTION Anton M. Krivtsov, Ekaterina E. Pavlovskaia, Marian Wiercigroch St. Petersburg State fracture of rocks caused by percussive drilling is presented. The process is modeled using particle are investigated. INTRODUCTION Percussive drilling is proved to be superior when compared to a convention rotary

  3. Engineering rock mass classifications

    SciTech Connect (OSTI)

    Bieniawski, Z.T.

    1989-01-01

    This book is a reference on rock mass classification, consolidating into one handy source information widely scattered through the literature. Includes new, unpublished material and case histories. Presents the fundamental concepts of classification schemes and critically appraises their practical application in industrial projects such as tunneling and mining.

  4. Q00906010024 rock check dam

    E-Print Network [OSTI]

    00906010024 rock check dam Q00906010025 rock check dam Q00906010021 rock check dam Q00906010022 rock check dam Q00906010027 rock check dam Q00906010026 rock check dam Q00906010018 rock check dam Q00906010023 rock check dam Q00906010011 rock check dam Q00906010008 rock check dam Q00906010007 rock check dam Q

  5. V00306010057 rock check dam

    E-Print Network [OSTI]

    ¬« ¬« ¬« ¬« ¬« XY! 16-020 16-030(c) 16-026(l) 16-028(c) 16-026(l) V00306010057 rock check dam V00306010012 rock check dam V00306010040 rock check dam V00306010039 rock check dam V00306010058 rock check dam V00306010064 rock check dam V00306010061 rock check dam V00306010062 rock check dam V00306010063

  6. V01406010015 rock check dam

    E-Print Network [OSTI]

    XY! ¬« ¬« V01406010015 rock check dam V01406010014 rock check dam V01406010013 rock check dam 1501403010012 earthen berm V01403010008 earthen berm V01406010003 rock check dam V01406010004 rock check dam V01406010010 rock check dam V01406010011 rock check dam 15-0651 15-0307 15-0588 15-0532 15-0575 stormdrain 7160

  7. T00706010013 rock check dam

    E-Print Network [OSTI]

    XY! ¬« T00706010013 rock check dam T00706010014 rock check dam T00702040012 established vegetation, green hatch area T00706010002 rock check dam T00706010011 rock check dam T00703120010 rock berm T00703020003 base course berm T00706010004 rock check dam T00706010009 rock check dam T00703020008 base course

  8. T00406010008 rock check dam

    E-Print Network [OSTI]

    XY! ¬« T00406010008 rock check dam T00406010009 rock check dam T00406010010 rock check dam T00406010011 rock check dam T-SMA-2.85 0.344 Acres 35-014(g) 35-016(n) T00406010005 rock check dam T00406010006 rock check dam T00403090004 curb T00402040007 established vegetation, green hatch area 7200 7200 7180

  9. Discrete Element Simulations of Dense Packings and Heaps made of Spherical and NonSpherical Particles

    E-Print Network [OSTI]

    Luding, Stefan

    the constitutive behavior of granular soils [35--39]. Some effects in the mechanics of granular materials cannot materials can also be applied to answer questions con­ cerning the micro­mechanics [32--34] or to determine

  10. Manufactured caverns in carbonate rock

    DOE Patents [OSTI]

    Bruce, David A.; Falta, Ronald W.; Castle, James W.; Murdoch, Lawrence C.

    2007-01-02

    Disclosed is a process for manufacturing underground caverns suitable in one embodiment for storage of large volumes of gaseous or liquid materials. The method is an acid dissolution process that can be utilized to form caverns in carbonate rock formations. The caverns can be used to store large quantities of materials near transportation facilities or destination markets. The caverns can be used for storage of materials including fossil fuels, such as natural gas, refined products formed from fossil fuels, or waste materials, such as hazardous waste materials. The caverns can also be utilized for applications involving human access such as recreation or research. The method can also be utilized to form calcium chloride as a by-product of the cavern formation process.

  11. Rock Cycle and Rocks Lab Rocks are aggregates of one or many minerals.

    E-Print Network [OSTI]

    Li, X. Rong

    Rock Cycle and Rocks Lab Rocks are aggregates of one or many minerals. Three types of rocks: A of their sizes, shapes and arrangement. Rule of Thumb: The size of mineral crystals in an igneous rock may, there is not enough time for large mineral crystals to form (e.g. obsidian) Igneous Rock Mineral Compositions

  12. J00206010020 rock check dam

    E-Print Network [OSTI]

    XY! J00206010020 rock check dam J00206010023 rock check dam 09-009 09-009 09-009 PJ-SMA-2 0.901 Acres J00206010021 rock check dam J00206010019 rock check dam J00206010014 rock check dam J00203010007 Smith DATE: 14-November-2014 REVISION NUMBER: 8 XY! IP sampler location Berm Channel/swale Check dam

  13. Session: Hard Rock Penetration

    SciTech Connect (OSTI)

    Tennyson, George P. Jr.; Dunn, James C.; Drumheller, Douglas S.; Glowka, David A.; Lysne, Peter

    1992-01-01

    This session at the Geothermal Energy Program Review X: Geothermal Energy and the Utility Market consisted of five presentations: ''Hard Rock Penetration - Summary'' by George P. Tennyson, Jr.; ''Overview - Hard Rock Penetration'' by James C. Dunn; ''An Overview of Acoustic Telemetry'' by Douglas S. Drumheller; ''Lost Circulation Technology Development Status'' by David A. Glowka; ''Downhole Memory-Logging Tools'' by Peter Lysne.

  14. Materials

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformationJesse BergkampCentermillion toMSDS onBudgetMaterialMaterials Materials Access to

  15. An Appraisal of Underground Radioactive Waste Disposal in Argillaceous and Crystalline Rocks: Some Geochemical, Geomechanical, and Hydrogeological Questions

    E-Print Network [OSTI]

    Apps, J.A.

    2011-01-01

    fracturing would be advantageous in retarding migration of hazardous materials from a repository in these rocks by sorption, the hydraulic

  16. Materials

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformationJesse BergkampCentermillion toMSDS onBudgetMaterial

  17. Rock melting tool with annealer section

    DOE Patents [OSTI]

    Bussod, Gilles Y. (Santa Fe, NM); Dick, Aaron J. (Oakland, CA); Cort, George E. (Montrose, CO)

    1998-01-01

    A rock melting penetrator is provided with an afterbody that rapidly cools a molten geological structure formed around the melting tip of the penetrator to the glass transition temperature for the surrounding molten glass-like material. An annealing afterbody then cools the glass slowly from the glass transition temperature through the annealing temperature range to form a solid self-supporting glass casing. This allows thermally induced strains to relax by viscous deformations as the molten glass cools and prevents fracturing of the resulting glass liner. The quality of the glass lining is improved, along with its ability to provide a rigid impermeable casing in unstable rock formations.

  18. Microwave assisted hard rock cutting

    DOE Patents [OSTI]

    Lindroth, David P. (Apple Valley, MN); Morrell, Roger J. (Bloomington, MN); Blair, James R. (Inver Grove Heights, MN)

    1991-01-01

    An apparatus for the sequential fracturing and cutting of subsurface volume of hard rock (102) in the strata (101) of a mining environment (100) by subjecting the volume of rock to a beam (25) of microwave energy to fracture the subsurface volume of rock by differential expansion; and , then bringing the cutting edge (52) of a piece of conventional mining machinery (50) into contact with the fractured rock (102).

  19. S00906010006 rock check dam

    E-Print Network [OSTI]

    XY! 53-0002 53-0890 53-1036 53-0598 53-0860 53-0056 S00906010006 rock check dam S00906010005 rock check dam S00906010007 rock check dam S00903010009 earthen berm S00903010010 earthen berm S00903120003 Channel/swale Check dam Sediment trap/basin Gabion Seed and mulch Cap Established vegetation SWMU boundary

  20. Rock-Around Orbits 

    E-Print Network [OSTI]

    Bourgeois, Scott K.

    2010-07-14

    , David Hyland Tom Pollock J. Maurice Rojas Head of Department, Dimitris Lagoudas December 2009 Major Subject: Aerospace Engineering iii ABSTRACT Rock-Around Orbits. (December 2009) Scott Kenneth Bourgeois, B.S., Texas A&M University Chair of Advisory...] : : : : : : : : : : : : : : : : : : : : : : : : : : : 3 4 Compatible Orbits for a Circular Target Orbit (Example 1) : : : : : 8 5 Inclination Bounds Geometry for a Circular Target Orbit : : : : : : : 10 6 GEO and RAO Orbits in the Inertial Frame (Example 1) : : : : : : : 14 7 GEO and RAO Orbits...

  1. Session: Hot Dry Rock

    SciTech Connect (OSTI)

    Tennyson, George P. Jr.; Duchane, David V.; Ponden, Raymond F.; Brown, Donald W.

    1992-01-01

    This session at the Geothermal Energy Program Review X: Geothermal Energy and the Utility Market consisted of four presentations: ''Hot Dry Rock - Summary'' by George P. Tennyson, Jr.; ''HDR Opportunities and Challenges Beyond the Long Term Flow Test'' by David V. Duchane; ''Start-Up Operations at the Fenton Hill HDR Pilot Plant'' by Raymond F. Ponden; and ''Update on the Long-Term Flow Testing Program'' by Donald W. Brown.

  2. Iron and Steel Phosphate Rock

    E-Print Network [OSTI]

    Torgersen, Christian

    Lime Lithium Magnesium Manganese Mercury Mica Molybdenum Nickel Nitrogen Peat Perlite Phosphate Rock . . . . . . . . . . . . . . . . . . . . . . . . 194 Appendix C--Resource/Reserve Definitions . . . . . . 195 Commodities: Abrasives (Manufactured

  3. Iron and Steel Phosphate Rock

    E-Print Network [OSTI]

    Torgersen, Christian

    Mica Molybdenum Nickel Nitrogen Peat Perlite Phosphate Rock Platinum Potash Pumice Quartz Crystal Rare . . . . . . . . . . . . . . . . . . . . . . . . 190 Appendix C--A Resource/Reserve Classification for Minerals

  4. A Phased Array Approach to Rock Blasting

    SciTech Connect (OSTI)

    Leslie Gertsch; Jason Baird

    2006-07-01

    A series of laboratory-scale simultaneous two-hole shots was performed in a rock simulant (mortar) to record the shock wave interference patterns produced in the material. The purpose of the project as a whole was to evaluate the usefulness of phased array techniques of blast design, using new high-precision delay technology. Despite high-speed photography, however, we were unable to detect the passage of the shock waves through the samples to determine how well they matched the expected interaction geometry. The follow-up mine-scale tests were therefore not conducted. Nevertheless, pattern analysis of the vectors that would be formed by positive interference of the shockwaves from multiple charges in an ideal continuous, homogeneous, isotropic medium indicate the potential for powerful control of blast design, given precise characterization of the target rock mass.

  5. Workshop on hydrology of crystalline basement rocks

    SciTech Connect (OSTI)

    Davis, S.N. (comp.)

    1981-08-01

    This workshop covered the following subjects: measurements in relatively shallow boreholes; measurement and interpretation of data from deep boreholes; hydrologic properties of crystalline rocks as interpreted by geophysics and field geology; rock mechanics related to hydrology of crystalline rocks; the possible contributions of modeling to the understanding of the hydrology of crystalline rocks; and geochemical interpretations of the hydrology of crystalline rocks. (MHR)

  6. The Landscape of Klamath Basin Rock Art

    E-Print Network [OSTI]

    David, Robert James

    2012-01-01

    Figure 22. Main rock art panel at QzM-1………………………………………………….31. Special Use Area rock art sites (map)………………………………………….Figure 32. Mod-17 rock art site within Modoc territory (

  7. Oil and Gas CDT Bots in Rocks: Intelligent Rock Deformation for Fault Rock

    E-Print Network [OSTI]

    Henderson, Gideon

    Heriot-Watt University, Institute of Petroleum Engineering Supervisory Team · Dr Helen Lewis, Heriot://www.pet.hw.ac.uk/staff-directory/jimsomerville.htm Key Words Nano/Micro sensors; faults; fault zones; geomechanics; rock mechanics; rock deformation-deformed equivalent, a different lab-deformed example and a geomechanical simulation of a fault zone showing permanent

  8. Shotgun cartridge rock breaker

    DOE Patents [OSTI]

    Ruzzi, Peter L. (Eagan, NM); Morrell, Roger J. (Bloomington, MN)

    1995-01-01

    A rock breaker uses shotgun cartridges or other firearm ammunition as the explosive charge at the bottom of a drilled borehole. The breaker includes a heavy steel rod or bar, a gun with a firing chamber for the ammunition which screws onto the rod, a long firing pin running through a central passage in the rod, and a firing trigger mechanism at the external end of the bar which strikes the firing pin to fire the cartridge within the borehole. A tubular sleeve surround the main body of the rod and includes slits the end to allow it to expand. The rod has a conical taper at the internal end against which the end of the sleeve expands when the sleeve is forced along the rod toward the taper by a nut threaded onto the external end of the rod. As the sleeve end expands, it pushes against the borehole and holds the explosive gasses within, and also prevents the breaker from flying out of the borehole. The trigger mechanism includes a hammer with a slot and a hole for accepting a drawbar or drawpin which, when pulled by a long cord, allows the cartridge to be fired from a remote location.

  9. REGIONAL THERMOHYDROLOGICAL EFFECTS OF AN UNDERGROUND REPOSITORY FOR NUCLEAR WASTES IN HARD ROCK

    E-Print Network [OSTI]

    Wang, J.S.Y.

    2014-01-01

    underground repository for nuclear waste in hard rock, LBL-and Vath, J.E. , Nuclear waste projections and source-termthe Scientific Basis for Nuclear Waste Management, Material

  10. Rock Art in the Public Trust: Managing Prehistoric Rock Art on Federal Land

    E-Print Network [OSTI]

    Hale, John Patrick

    2010-01-01

    Stories in Stone: Rock Art Pictures by Early Americans. NewIntroduction. ? Coso Rock Art: a New Perspective, edited byIn The Archaeology of Rock Art,? edited by Christopher

  11. Environmental assessment of remedial action at the slick rock Uranium Mill Tailings sites Slick Rock, Colorado

    SciTech Connect (OSTI)

    Not Available

    1994-09-01

    The Uranium Mill Tailings Radiation Control Act of 1978 (42 USC {section} 7901 et seq.), hereafter referred to as the UMTRCA, authorized the U.S. Department of Energy (DOE) to clean up two uranium mill tailings processing sites near Slick Rock, Colorado, in San Miguel County. The purpose of the cleanup is to reduce the potential health effects associated with the radioactive materials remaining on the sites and on vicinity properties (VPs) associated with the sites. Contaminated materials cover an estimated 55 acres of the Union Carbide (UC) processing site and 12 ac of the North Continent (NC) processing site. The total estimated volume of contaminated materials is approximately 61 8,300 cubic yards. In addition to the contamination in the two processing site areas, four VPs were found to contain contamination. As a result of the tailings being exposed to the environment, contamination associated with the UC and NC sites has leached into shallow ground water. Surface water has not been affected. The closest residence is approximately 0.3 air mi from either site. The proposed action is to remediate the UC and NC sites by removing all contaminated materials within the designated site boundaries or otherwise associated with the sites, and relocating them to, and stabilizing them at, a location approximately 5 road mi (8 km) northeast of the sites on land administered by the Bureau of Land Management (BLM). Remediation would be performed by the DOE`s Uranium Mill Tailings Remedial Action (UMTRA) Project. All solid contaminated materials would be buried under 5 feet (ft) of rock and soil materials. The proposed disposal site area is currently used by ranchers for cattle grazing over a 7-month period. The closest residence to the proposed disposal site is 2 air mi. An estimated 44 ac of land would be permanently transferred from the BLM to the DOE and restricted from future use.

  12. Iron and Steel Phosphate Rock

    E-Print Network [OSTI]

    Torgersen, Christian

    Kyanite Lead Lime Lithium Magnesium Manganese Mercury Mica Molybdenum Nickel Nitrogen Peat Perlite Graphite Peat Sulfur Beryllium Gypsum Perlite Talc Bismuth Hafnium Phosphate Rock Tantalum Boron Helium on the USGS--the Federal source for science about the Earth, its natural and living resources, natural hazards

  13. Iron and Steel Phosphate Rock

    E-Print Network [OSTI]

    Torgersen, Christian

    Kyanite Lead Lime Lithium Magnesium Manganese Mercury Mica Molybdenum Nickel Nitrogen Peat Perlite Graphite Peat Sulfur Beryllium Gypsum Perlite Talc Bismuth Hafnium Phosphate Rock Tantalum Boron Helium information on the USGS--the Federal source for science about the Earth, its natural and living resources

  14. The effect of the packing density on the indentation hardness of cohesive-frictional porous materials

    E-Print Network [OSTI]

    Cariou, Sophie, S.M. Massachusetts Institute of Technology

    2006-01-01

    Natural composites in general and sedimentary rocks in particular are highly heterogeneous materials which defy a straightforward implementation of the materials science paradigm of microstructure-properties-performance ...

  15. ArchRock Corporation | Open Energy Information

    Open Energy Info (EERE)

    Arch Rock is a systems and software company that builds products and technology for wireless sensor networks. References: ArchRock Corporation1 This article is a stub. You can...

  16. Lichen: the challenge for rock art conservation 

    E-Print Network [OSTI]

    Dandridge, Debra Elaine

    2007-04-25

    This study investigates the effects that lichens have on rock surfaces in which ancient rock art (petroglyphs and pictographs) may be found. The study area includes four sites in the United States: one quartzite site in ...

  17. Desert Rock Coatings Ronald I. Dorn

    E-Print Network [OSTI]

    Dorn, Ron

    Chapter 7 Desert Rock Coatings Ronald I. Dorn Introduction Desert landforms are characterized, that the supposed funda- mental bare-rock nature of desert landforms stretches the truth. In reality, rock coatings Petra tourist attraction of the Al-Khazneh Tomb fac¸ade is coated with a black manganese-rich varnish

  18. ANNUAL FISH PASSAGE REPORT ROCK ISLAND DAM

    E-Print Network [OSTI]

    42) ANNUAL FISH PASSAGE REPORT ROCK ISLAND DAM COLUMBIA RIVER, WASHINGTON 1961 Marine Biological. McKeman, Director ANNUAL FISH PASSAGE REPORT - ROCK ISLAND DAM COLUMBIA RIVER, WASHINGTON, 1961--Fisheries No. 421 Washington, D. C. April 1962 #12;Rock Island Dam, Columbia River, Washington ii #12;CONTENTS

  19. ANNUAL FISH PASSAGE REPORT ROCK ISLAND DAM

    E-Print Network [OSTI]

    ANNUAL FISH PASSAGE REPORT ROCK ISLAND DAM COLUMBIA RIVER, WASHINGTON, 1959 :y .iiJA/i-3ri ^' WUUUi. ANNUAL FISH PASSAGE REPORT - ROCK ISLAND DAM COLUMBIA RIVER, WASHINGTON, 1959 by Paul D. Zimmer, Clifton and observations 10 Summary 13 #12;#12;ANNUAL FISH PASSAGE REPORT - ROCK ISLAND DAM COLUMBIA RIVER, WASHINGTON

  20. Annual Fish Passage Report -Rock Island Dam

    E-Print Network [OSTI]

    Annual Fish Passage Report - Rock Island Dam Columbia River, Washington, 1965 By Paul D. Zimmer L. McKeman, Director Annual Fish Passage Report - Rock Island Dam Columbia River, Washington, 1965;#12;Annual Fish Passage Report - Rock Island Dam Columbia River, Washington, 1965 By PAUL D. ZIMMER, Fishery

  1. Environmental assessment of remedial action at the Slick Rock uranium mill tailings sites Slick Rock, Colorado. Draft

    SciTech Connect (OSTI)

    NONE

    1993-06-01

    The Uranium Mill Tailings Radiation Control Act of 1978 (UMTRCA) authorized the US Department of Energy (DOE) to clean up two uranium mill tailings processing sites near Slick Rock, Colorado, in San Miguel County. The purpose of the cleanup is to reduce the potential health effects associated with the radioactive materials remaining on the sites and on vicinity properties (VP) associated with the sites. The US Environmental Protection Agency (EPA) promulgated standards for the UMTRCA that contained measures to control the contaminated materials and to protect the groundwater from further degradation. Remedial actions at the Slick Rock sites must be performed in accordance with these standards and with the concurrence of the US Nuclear Regulatory Commission (NRC).

  2. Algorithms for a Persistent Heap

    E-Print Network [OSTI]

    Atkinson, M.P.

    Atkinson,M.P. Chisholm,K.J. Cockshott,W.P. Software Practice and Experience, Vol 13, No 3, pp 259-272 Academic Press

  3. Environmental assessment of remedial action at the Slick Rock uranium mill tailings sites, Slick Rock, Colorado

    SciTech Connect (OSTI)

    NONE

    1995-01-01

    The Uranium Mill Tailings Radiation Control Act of 1978, hereafter referred to as the UMTRCA, authorized the US Department of Energy (DOE) to clean up two uranium mill tailings processing sites near Slick Rock, Colorado, in San Miguel County. The purpose of the cleanup is to reduce the potential health effects associated with the radioactive materials remaining on the processing sites and on vicinity properties (VPs) associated with the sites. The US Environmental Protection Agency (EPA) promulgated standards for the UMTRCA that contained measures to control the contaminated materials and to protect the ground water from further degradation. The sites contain concrete foundations of mill buildings, tailings piles, and areas contaminated by windblown and waterborne radioactive tailings materials. The proposed action is to remediate the UC and NC sites by removing all contaminated materials within the designated site boundaries or otherwise associated with the sites, and relocating them to, and stabilizing them at, a location approximately 5 road mi (8 km) northeast of the processing sites on land administered by the US Bureau of Land Management (BLM). Remediation would be performed by the DOE`s Uranium Mill Tailings Remedial Action (UMTRA) Project.

  4. Hot Dry Rock; Geothermal Energy

    SciTech Connect (OSTI)

    1990-01-01

    The commercial utilization of geothermal energy forms the basis of the largest renewable energy industry in the world. More than 5000 Mw of electrical power are currently in production from approximately 210 plants and 10 000 Mw thermal are used in direct use processes. The majority of these systems are located in the well defined geothermal generally associated with crustal plate boundaries or hot spots. The essential requirements of high subsurface temperature with huge volumes of exploitable fluids, coupled to environmental and market factors, limit the choice of suitable sites significantly. The Hot Dry Rock (HDR) concept at any depth originally offered a dream of unlimited expansion for the geothermal industry by relaxing the location constraints by drilling deep enough to reach adequate temperatures. Now, after 20 years intensive work by international teams and expenditures of more than $250 million, it is vital to review the position of HDR in relation to the established geothermal industry. The HDR resource is merely a body of rock at elevated temperatures with insufficient fluids in place to enable the heat to be extracted without the need for injection wells. All of the major field experiments in HDR have shown that the natural fracture systems form the heat transfer surfaces and that it is these fractures that must be for geothermal systems producing from naturally fractured formations provide a basis for directing the forthcoming but, equally, they require accepting significant location constraints on HDR for the time being. This paper presents a model HDR system designed for commercial operations in the UK and uses production data from hydrothermal systems in Japan and the USA to demonstrate the reservoir performance requirements for viable operations. It is shown that these characteristics are not likely to be achieved in host rocks without stimulation processes. However, the long term goal of artificial geothermal systems developed by systematic engineering procedures at depth may still be attained if high temperature sites with extensive fracturing are developed or exploited. [DJE -2005

  5. Big Bang Day : Physics Rocks

    ScienceCinema (OSTI)

    None

    2011-04-25

    Is particle physics the new rock 'n' roll? The fundamental questions about the nature of the universe that particle physics hopes to answer have attracted the attention of some very high profile and unusual fans. Alan Alda, Ben Miller, Eddie Izzard, Dara O'Briain and John Barrowman all have interests in this branch of physics. Brian Cox - CERN physicist, and former member of 90's band D:Ream, tracks down some very well known celebrity enthusiasts and takes a light-hearted look at why this subject can appeal to all of us.

  6. Post Rock | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIXsourceII JumpQuarterly SmartDB-2, Blue MountainSchoolPrairiePonder,Abbey SchoolS AOakRock

  7. Rock Classification in Organic Shale Based on Petrophysical and Elastic Rock Properties Calculated from Well Logs 

    E-Print Network [OSTI]

    Aranibar Fernandez, Alvaro A

    2015-01-05

    Organic Content (TOC), fluid saturation, volumetric concentrations of mineral constituents, and elastic properties facilitated identification of different rock classes, using an unsupervised artificial neural network. A good rock classification technique...

  8. Rock-Water Interactions In Hot Dry Rock Geothermal Systems- Field...

    Open Energy Info (EERE)

    Rock-Water Interactions In Hot Dry Rock Geothermal Systems- Field Investigations Of In Situ Geochemical Behavior Jump to: navigation, search OpenEI Reference LibraryAdd to library...

  9. Crack coalescence in rock-like material under cycling loading

    E-Print Network [OSTI]

    Ko, Tae Young, 1973-

    2005-01-01

    A total of 170 tests (68 tests for monotonic loading, 102 tests for cyclic loading) have been performed to investigate crack initiation, propagation and coalescence. The specimens have two pre-existing flaws which are ...

  10. On the Relationship between Stress and Elastic Strain for Porous and Fractured Rock

    SciTech Connect (OSTI)

    Liu, Hui-Hai; Rutqvist, Jonny; Berryman, James G.

    2008-02-25

    Modeling the mechanical deformations of porous and fractured rocks requires a stress-strain relationship. Experience with inherently heterogeneous earth materials suggests that different varieties of Hook's law should be applied within regions of the rock having significantly different stress-strain behavior, e.g., such as solid phase and various void geometries. We apply this idea by dividing a rock body conceptually into two distinct parts. The natural strain (volume change divided by rock volume at the current stress state), rather than the engineering strain (volume change divided by the unstressed rock volume), should be used in Hooke's law for accurate modeling of the elastic deformation of that part of the pore volume subject to a relatively large degree of relative deformation (i.e., cracks or fractures). This approach permits the derivation of constitutive relations between stress and a variety of mechanical and/or hydraulic rock properties. We show that the theoretical predictions of this method are generally consistent with empirical expressions (from field data) and also laboratory rock experimental data.

  11. Stratified precambrian rocks (sedimentary?) beneath the midcontinent region of the US. Final technical report

    SciTech Connect (OSTI)

    Hauser, E.C.

    1993-02-01

    A thick sequence of layered rocks occurs beneath the Phanerozoic platform strata which blanket the US midcontinent. Observed on COCORP deep reflection data in southern Illinois and Indiana and in SW Oklahoma and adjacent Texas, this sequence is locally 1--3 times as thick as the overlying Paleozoic cover, but the origin of this sequence and its ultimate lateral extent are unknown. However, the occurrences of Precambrian layered rocks on both the COCORP profiles and reprocessed industry seismic reflection data from the region lie within regions of generally low amplitude and low frequency aeromagnetic anomaly, suggesting an even greater distribution. Unmetamorphosed Precambrian sedimentary rocks have been recovered from drill holes in southwest Ohio and adjacent northern Kentucky and southwesternmost Indiana. These Precambrian sedimentary rocks lie above and may be part of an underlying package of strongly layered rocks imaged on a short and shallow seismic profile in southwest Ohio. These Precambrian sedimentary rocks were originally viewed as part of a late Precambrian (Keweenawan?) rift; however, in light of Grenville foreland structures seen on the COCORP profile to the north in west central Ohio, these Precambrian strata may (1) be part of a heretofore unrecognized Grenville foreland basin, or (2) indicate that unmetamorphosed Precambrian sedimentary material may be an important constituent of the layered rocks observed on COCORP beneath southern Illinois and Indiana.

  12. Stratified precambrian rocks (sedimentary ) beneath the midcontinent region of the US

    SciTech Connect (OSTI)

    Hauser, E.C.

    1993-02-01

    A thick sequence of layered rocks occurs beneath the Phanerozoic platform strata which blanket the US midcontinent. Observed on COCORP deep reflection data in southern Illinois and Indiana and in SW Oklahoma and adjacent Texas, this sequence is locally 1--3 times as thick as the overlying Paleozoic cover, but the origin of this sequence and its ultimate lateral extent are unknown. However, the occurrences of Precambrian layered rocks on both the COCORP profiles and reprocessed industry seismic reflection data from the region lie within regions of generally low amplitude and low frequency aeromagnetic anomaly, suggesting an even greater distribution. Unmetamorphosed Precambrian sedimentary rocks have been recovered from drill holes in southwest Ohio and adjacent northern Kentucky and southwesternmost Indiana. These Precambrian sedimentary rocks lie above and may be part of an underlying package of strongly layered rocks imaged on a short and shallow seismic profile in southwest Ohio. These Precambrian sedimentary rocks were originally viewed as part of a late Precambrian (Keweenawan ) rift; however, in light of Grenville foreland structures seen on the COCORP profile to the north in west central Ohio, these Precambrian strata may (1) be part of a heretofore unrecognized Grenville foreland basin, or (2) indicate that unmetamorphosed Precambrian sedimentary material may be an important constituent of the layered rocks observed on COCORP beneath southern Illinois and Indiana.

  13. WAVE GENERATIONS FROM CONFINED EXPLOSIONS IN ROCKS

    E-Print Network [OSTI]

    Stewart, Sarah T.

    WAVE GENERATIONS FROM CONFINED EXPLOSIONS IN ROCKS C. L. Liu and Thomas J. Ahrens Seismological Laboratory, California Institute of Technology, Pasadena, CA 91125 In order to record P- and S-waves on the interactions between incident P- and SV-waves and free-surfaces of rocks. The relations between particle

  14. ANNUAL FISH PASSAGE REPORT ROCK ISLAND DAM

    E-Print Network [OSTI]

    ANNUAL FISH PASSAGE REPORT ROCK ISLAND DAM COLUMBIA RIVER, WASHINGTON 1960 . SPECIAL SCIENTIFIC ISLAND DAM COLUMBIA RIVER, WASHINGTON, 1960 by Paul D. Zimmer and Clifton C. Davidson United States Fish This annual report of fishway operations at Rock Island Dam in 1960 is dedicated to the memory of co

  15. Preliminary validation of rock mass models by comparison to laboratory frictional sliding experiments

    SciTech Connect (OSTI)

    Sobolik, S.R.; Miller, J.D.

    1996-09-01

    The U.S. Department of Energy`s (DOE) Yucca Mountain Site Characterization Project (YMP) is studying Yucca Mountain in southwestern Nevada as a potential site for a high-level nuclear waste repository. Site characterization will be facilitated by the construction of an Exploratory Studies Facility (ESF). The ESF and potential repository will be excavated from both nonwelded and welded ashflow tuff with varying rock quality (degree of welding, rock mass strength, etc.) and fault and fracture characteristics. Design concerns for the construction of these facilities include the integrity of the structure during underground testing operations and, if it occurs, the emplacement and storage of high-level nuclear waste which could increase the local temperatures in the underground rock mass to as high as 300{degrees}C. Because of the associated issues regarding personnel and long-term environmental safety, sophisticated jointed rock mass models will be required to provide a high degree of confidence for decisions regarding the design, site characterization, and licensing of such facilities. The objective of the work documented in this report is to perform code validation calculations for three rock-mass computer models. The three rock-mass computer models used for this report are the discrete element code UDEC, Version 1.82; and the finite element continuum joint models JAC2D Version 5.10 and JAS3D Version 1.1. The rock mass behavior predicted by the models are compared to the results of laboratory experiments on layered polycarbonate (Lexan) and granite plate experiments. These experiments examine the rock mass behavior of well-defined jointed rock structures or models of jointed structures under uniaxial and biaxial loading. The laboratory environment allows control over the boundary conditions, material properties, and quality and quantity of the data obtained.

  16. Fluid-rock interaction: A reactive transport approach

    E-Print Network [OSTI]

    Steefel, C.

    2009-01-01

    to coupled mass transport and fluid-rock interaction in aof a reactive transport approach in fluid-rock interaction,reactive transport models for fluid-rock interaction. Case

  17. Regional Geology: GIS Database for Alternative Host Rocks and...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    three alternative geologic host rocks for mined repositories (granitic crystalline, salt, and clay shale) and crystalline basement rock for deep borehole disposal. This...

  18. Rock Physics of Geologic Carbon Sequestration/Storage Dvorkin...

    Office of Scientific and Technical Information (OSTI)

    Rock Physics of Geologic Carbon SequestrationStorage Dvorkin, Jack; Mavko, Gary 54 ENVIRONMENTAL SCIENCES; 58 GEOSCIENCES This report covers the results of developing the rock...

  19. Fundamental Research on Percussion Drilling: Improved rock mechanics

    Office of Scientific and Technical Information (OSTI)

    full-scale laboratory investigations Michael S. Bruno 58 GEOSCIENCES; 02 PETROLEUM; 03 NATURAL GAS; ROCK DRILLING; PRESSURE DEPENDENCE; ROCK MECHANICS; ROTARY DRILLING; WELL...

  20. Rock mechanics design in mining and tunneling

    SciTech Connect (OSTI)

    Bieniawski, Z.T.

    1984-01-01

    This book introduces the design process as applied to rock mechanics aspects of underground mining and tunneling. Topics covered include a historical perspective, the design process in engineering, empirical methods of design, observational methods of design, and guided design.

  1. First Rocks from Outside the Solar System

    SciTech Connect (OSTI)

    Westphal, Andrew

    2014-10-17

    Andrew Westphal presents his findings in examining the first rocks from outside the solar system at our '8 Big Ideas' Science at the Theater event on October 8th, 2014, in Oakland, California.

  2. COMPUTED SEISMIC SPEEDS AND ATTENUATION IN ROCKS ...

    E-Print Network [OSTI]

    White, J. E.

    At the gas-oil or gas-water contact in a homo- geneous reservoir rock, capillary pressure ... During production of a field, gas may come out of solution and crcatr ...

  3. Rock Slopes from Mechanics to Decision Making

    E-Print Network [OSTI]

    Einstein, Herbert H.

    Rock slope instabilities are discussed in the context of decision making for risk assessment and management. Hence, the state of the slope and possible failure mechanism need to be defined first. This is done with geometrical ...

  4. Stress-induced transverse isotropy in rocks

    SciTech Connect (OSTI)

    Schwartz, L.M.; Murphy, W.F. III [Schlumberger-Doll Research Center, Ridgefield, CT (United States); Berryman, J.G. [Lawrence Livermore National Lab., CA (United States)

    1994-03-28

    The application of uniaxial pressure can induce elastic anisotropy in otherwise isotropic rock. We consider models based on two very different rock classes, granites and weakly consolidated granular systems. We show that these models share common underlying assumptions, that they lead to similar qualitative behavior, and that both provide a microscopic basis for elliptical anisotropy. In the granular case, we make experimentally verifiable predictions regarding the horizontally propagating modes based on the measured behavior of the vertical modes.

  5. Tectonics, fracturing of rock, and erosion Peter Molnar,1,2

    E-Print Network [OSTI]

    Kraus, Mary

    of material from the Earth's surface by erosion should reduce magnitudes of vertical compressive stress crust in tectonically active regions should be fragmented into blocks down to the scale of boulders or smaller. Dismembered rock arrives at the Earth's surface already prepared to be transported away

  6. Nonlinear damage rheology and wave resonance in rocks V. Lyakhovsky1

    E-Print Network [OSTI]

    Ampuero, Jean Paul

    1 Nonlinear damage rheology and wave resonance in rocks V. Lyakhovsky1 , Y. Hamiel1 , P. Ampuero2 of damaged materials with theoretical analyses and numerical simulations based on a nonlinear continuum damage model. Quasi-static simulations of damage accumulation under cyclic load reproduce the laboratory

  7. Differential effective medium modeling of rock elastic moduli with critical porosity constraints

    SciTech Connect (OSTI)

    Mukerji, T.; Mavko, G. [Stanford Univ. CA (United States)] [Stanford Univ. CA (United States); Berryman, J.; Berge, P. [Lawrence Livermore National Lab., CA (United States)] [Lawrence Livermore National Lab., CA (United States)

    1995-03-01

    Rocks generally have a percolation porosity at which they lose rigidity and fall apart. Percolation behaviour is a purely geometrical property, independent of any physical properties, and is a powerful constraint on any valid velocity-porosity relation. The authors show how the conventional Differential Effective Medium (DEM) theory can be modified to incorporate percolation of elastic moduli in rocks by taking the material at the critical porosity as one of the constituents of a two-phase composite. Any desired percolation porosity can be specified as an input. In contrast, the conventional DEM model always predicts percolation at a porosity of either 0 or 100 percent. Most sedimentary rocks however have intermediate percolation porosities and are therefore not well represented by the conventional theory. The modified DEM model incorporates percolation behavior, and at the same time is always consistent with the Hashin-Shtrikman bounds. The predictions compare favorably with laboratory sandstone data. 24 refs., 3 figs.

  8. Actualistic and Geochemical Modeling of Reservoir Rock, CO2 and Formation Fluid Interaction, Citronelle Oil Field, Alabama

    SciTech Connect (OSTI)

    Weislogel, Amy

    2014-01-31

    This report includes description of the Citronelle field study area and the work carried out in the project to characterize the geology and composition of reservoir rock material and to collect an analyze the geochemical composition of produced fluid waters from the Citronelle field. Reservoir rock samples collected from well bore core were made into thin-sections and assessed for textural properties, including pore types and porosity distribution. Compositional framework grain modal data were collected via point-counting, and grain and cement mineralogy was assessed using SEM-EDS. Geochemistry of fluid samples is described and modeled using PHREEQC. Composition of rock and produced fluids were used as inputs for TOUGHREACT reactive transport modeling, which determined the rock-fluid system was in disequilibrium.

  9. LASER SCANNING TECHNOLOGY FOR ROCK ENGINEERING APPLICATIONS

    E-Print Network [OSTI]

    LASER SCANNING TECHNOLOGY FOR ROCK ENGINEERING APPLICATIONS Thorsten Schulz Institute of Geodesy or on the excavation surface. The use of laser scanners enables one to cope with practical constraints encountered surfaces regardless of the lighting conditions. Therefore, laser scanners have the potential to be employed

  10. Storage capacity in hot dry rock reservoirs

    DOE Patents [OSTI]

    Brown, Donald W. (Los Alamos, NM)

    1997-01-01

    A method of extracting thermal energy, in a cyclic manner, from geologic strata which may be termed hot dry rock. A reservoir comprised of hot fractured rock is established and water or other liquid is passed through the reservoir. The water is heated by the hot rock, recovered from the reservoir, cooled by extraction of heat by means of heat exchange apparatus on the surface, and then re-injected into the reservoir to be heated again. Water is added to the reservoir by means of an injection well and recovered from the reservoir by means of a production well. Water is continuously provided to the reservoir and continuously withdrawn from the reservoir at two different flow rates, a base rate and a peak rate. Increasing water flow from the base rate to the peak rate is accomplished by rapidly decreasing backpressure at the outlet of the production well in order to meet periodic needs for amounts of thermal energy greater than a baseload amount, such as to generate additional electric power to meet peak demands. The rate of flow of water provided to the hot dry rock reservoir is maintained at a value effective to prevent depletion of the liquid

  11. Storage capacity in hot dry rock reservoirs

    DOE Patents [OSTI]

    Brown, D.W.

    1997-11-11

    A method is described for extracting thermal energy, in a cyclic manner, from geologic strata which may be termed hot dry rock. A reservoir comprised of hot fractured rock is established and water or other liquid is passed through the reservoir. The water is heated by the hot rock, recovered from the reservoir, cooled by extraction of heat by means of heat exchange apparatus on the surface, and then re-injected into the reservoir to be heated again. Water is added to the reservoir by means of an injection well and recovered from the reservoir by means of a production well. Water is continuously provided to the reservoir and continuously withdrawn from the reservoir at two different flow rates, a base rate and a peak rate. Increasing water flow from the base rate to the peak rate is accomplished by rapidly decreasing backpressure at the outlet of the production well in order to meet periodic needs for amounts of thermal energy greater than a baseload amount, such as to generate additional electric power to meet peak demands. The rate of flow of water provided to the hot dry rock reservoir is maintained at a value effective to prevent depletion of the liquid inventory of the reservoir. 4 figs.

  12. Transfer of hot dry rock technology

    SciTech Connect (OSTI)

    Smith, M.C.

    1985-11-01

    The Hot Dry Rock Geothermal Energy Development Program has focused worldwide attention on the facts that natural heat in the upper part of the earth's crust is an essentially inexhaustible energy resource which is accessible almost everywhere, and that practical means now exist to extract useful heat from the hot rock and bring it to the earth's surface for beneficial use. The Hot Dry Rock Program has successfully constructed and operated a prototype hot, dry rock energy system that produced heat at the temperatures and rates required for large-scale space heating and many other direct uses of heat. The Program is now in the final stages of constructing a larger, hotter system potentially capable of satisfying the energy requirements of a small, commercial, electrical-generating power plant. To create and understand the behavior of such system, it has been necessary to develop or support the development of a wide variety of equipment, instruments, techniques, and analyses. Much of this innovative technology has already been transferred to the private sector and to other research and development programs, and more is continuously being made available as its usefulness is demonstrated. This report describes some of these developments and indicates where this new technology is being used or can be useful to industry, engineering, and science.

  13. Environmental assessment of remedial action at the Slick Rock uranium mill tailings sites, Slick Rock, Colorado. Revision 1

    SciTech Connect (OSTI)

    Not Available

    1994-09-01

    The Uranium Mill Tailings Radiation Control Act of 1978 (42 USC {section}7901 et seq.), hereafter referred to as the UMTRCA, authorized the US Department of Energy (DOE) to clean up two uranium mill tailings processing sites near Slick Rock, Colorado, in San Miquel County. Contaminated materials cover an estimated 63 acres of the Union Carbide (UC) processing site and 15 ac of the North Continent (NC) processing site. The sites are within 1 mile of each other and are adjacent to the Dolores River. The sites contain concrete foundations of mill buildings, tailings piles, and areas contaminated by windblown and waterborne radioactive tailings materials. The total estimated volume of contaminated materials is approximately 621,300 cubic yards (yd{sup 3}). In addition to the contamination in the two processing site areas, four VPs were found to contain contamination. As a result of the tailings being exposed to the environment, contamination associated with the UC and NC sites has leached into shallow ground water. Surface water has not been affected. The closest residence is approximately 0.3 air mi from either site. The proposed action is to remediate the UC and NC sites by removing all contaminated materials within the designing site boundaries or otherwise associated with the sites, and relocating them to, and stabilizing them at, a location approximately 5 road mi northeast of the sites on land administered by the Bureau of Land Management (BLM).

  14. Material invariant properties of shales : nanoindentation and microporoelastic analysis

    E-Print Network [OSTI]

    Delafargue, A. (Antoine), 1981-

    2005-01-01

    Shales compose the major part of sedimentary rocks and cover most of hydrocarbon bearing reservoirs. Shale materials are probably one of the most complex natural composites, and their mechanical properties are still an ...

  15. SEARCH FOR UNDERGROUND OPENINGS FOR IN SITU TEST FACILITIES IN CRYSTALLINE ROCK

    E-Print Network [OSTI]

    Wallenberg, H.A.

    2010-01-01

    of the precambrian crystalline rocks, Park and Jeffersonmap 1-413. 1965, The crystalline rocks of South Carolina,TEST FACILITIES IN CRYSTALLINE ROCK Harold A. Wollenberg,

  16. Synthesis and Characterization of High Temperature Cement-Based Hydroceramic Materials 

    E-Print Network [OSTI]

    Kyritsis, Konstantinos

    2009-01-01

    Cement-based materials are of importance in the construction of geothermal wells and high-temperature oil and gas wells. These materials fill the annulus between the well casing and the rock forming a protective layer, ...

  17. FACTORS IN THE DESIGN OF A ROCK MECHANICS CENTRIFUGE FOR STRONG ROCK

    E-Print Network [OSTI]

    Clark, George B

    1984-01-01

    1 . Capacit i es of known centrifuges and v proposed SoftSolla I rock mechanics centrifuge r, ---------1~ --- dxB. , (1980), Geotechnical centrifuges for model studies and

  18. Modeling of crack initiation, propagation and coalescence in rocks

    E-Print Network [OSTI]

    Gonçalves da Silva, Bruno Miguel

    2009-01-01

    Natural or artificial fracturing of rock plays a very important role in geologic processes and for engineered structures in and on rock. Fracturing is associated with crack initiation, propagation and coalescence, which ...

  19. Project Reports for Standing Rock Sioux Tribe- 2012 Project

    Broader source: Energy.gov [DOE]

    The Standing Rock Sioux Tribe (SRST) will perform a feasibility study and associated tasks over the course of two years on sites within the exterior boundaries of the Standing Rock Sioux...

  20. Inversion of seismic attributes for petrophysical parameters and rock facies 

    E-Print Network [OSTI]

    Shahraeeni, Mohammad Sadegh

    2011-01-01

    Prediction of rock and fluid properties such as porosity, clay content, and water saturation is essential for exploration and development of hydrocarbon reservoirs. Rock and fluid property maps obtained from such predictions ...

  1. 2.20 Properties of Rocks and Minerals -Magnetic Properties of Rocks and Minerals

    E-Print Network [OSTI]

    Dunin-Borkowski, Rafal E.

    Scale Exchange Interactions and Magnetic Structure in Fe-Bearing Oxides Atomistic Simulations2.20 Properties of Rocks and Minerals - Magnetic Properties of Rocks and Minerals R. J. Harrison, R.20.5.1.3 2.20.5.2 2.20.5.2.1 2.20.5.2.2 2.20.5.2.3 2.20.5.2.4 Introduction Magnetism at the Atomic Length

  2. Influence of Lithophysal Geometry on the Uniaxial Compression of Tuff-Like Rock

    SciTech Connect (OSTI)

    Rigby, Douglas B.

    2007-06-13

    A large portion of the rock of the high-level nuclear waste repository at Yucca Mountain contains lithophysae or voids. These voids have a significant detrimental effect on the engineering properties of the rock mass and its performance. The lithophysae were formed at the time of volcanic deposition by pockets of gas trapped within the compressing and cooling pyroclastic flow material. Lithophysae vary by size, shape, and spatial frequency of occurrence. Due to the difficulties of testing actual lithophysal rock, the current mechanical property data set is limited and the numerical models of lithophysal rock are not well validated. The purpose of this task was to experimentally quantify the effect of void geometry in the mechanical compression of cubes of analog lithophysal-like rock. In this research the mechanical properties of the analog rock were systematically studied by examining various patterns of voids based on variables consisting of hole shape, size, and geometrical distribution. Each specified hole pattern was cast into 6 by 6 by 6-in. Hydro-StoneTB® specimens (produced in triplicate) and then tested under uniaxial compression. Solid Hydro-StoneTB® specimens exhibited similar mechanical properties to those estimated for rock mass solid specimens of Topopah Spring tuff. The results indicated that the compressive strength and Young’s Modulus values decrease with increasing specimen void porosity. The modulus and strength with void porosity relationships are essentially linear over the 5 to 20 percent void porosity range. When zero void porosity (solid specimen) results are added, exponential functions do not provide a good fit to the data due to a significant sensitivity of strength and modulus to the presence of macro-sized voids. From solid specimens there is roughly a 60 percent drop in strength with about 7 percent void porosity, increasing to an 80 percent drop at about 20 percent void porosity. The percent change in modulus from the solid specimen value is roughly 30 and 45 percent at 7 and 19 percent void porosity, respectively. A bilinear model gives a much better fit to the observed experimental data. Shape of hole appears to be significant for strength, but not for Young’s Modulus. Size of hole (at similar values of porosity) does not effect modulus values, but there may be a correlation with strength (smaller hole specimens are slightly stronger). Overall, the results help to validate the Yucca Mountain numerical model of lithophysal rock, but there are also some differences that should be looked into and explained. Hydro-Stone TB® specimens give mechanical strength results that are about one rock mass category lower than is expected based on their lithophysal porosity.

  3. A CONSTITUTIVE MODEL TO PREDICT THE HYDROMECHANICAL BEHAVIOUR OF ROCK

    E-Print Network [OSTI]

    Aubertin, Michel

    in the presence of water to better assess the stability of rock structures under many situations. The accurate conditions. A rock mass behaviour can also be influenced by the water flow and ensuing pore pressure. For example, a previously stable rock structure can become unstable with an increase of water pressure inside

  4. Rock drilling bit and a method of producing the same

    SciTech Connect (OSTI)

    Kane, R.F.; Portugal, J.J.; Kuzniar, P.S.

    1989-09-19

    This patent describes a method for forming a drill bit of the type used for drilling rock and including a drill bit body defining a cutting face having a plurality of hard material cutting inserts mounted in openings formed in the cutting face. The method comprising the steps of: providing a drill bit body formed from a steel capable of being carburized, the body having a cutting face surface; identifying on the cutting face surface those locations wherein insert mounting openings are needed; covering each location with a material capable of preventing penetration of carbon into the bit body in the area of the location during carburizing, the area covered at each such location being at least slightly greater that the size of the insert mounting opening needed; with the insert mounting locations covered, carburizing and heat treating the bit body to case harden the cutting face to a hardness above 50 on the Rockwell C scale; and thereafter, drilling an insert receiving opening at each location and press-fitting hard material cutting inserts into each such opening.

  5. Big Rock Point severe accident management strategies

    SciTech Connect (OSTI)

    Brogan, B.A. [Consumers Power Co., Charlevoix, MI (United States); Gabor, J.R. [Dames and Moore, Westmont, IL (United States)

    1996-07-01

    December 1994, the Nuclear Energy Institute (NEI) issued guidance relative to the formal industry position on Severe Accident Management (SAM) approved by the NEI Strategic Issues Advisory Committee on November 4, 1994. This paper summarizes how Big Rock Point (BRP) has and continues to address SAM strategies. The historical accounting portion of this presentation includes a description of how the following projects identified and defined the current Big Rock Point SAM strategies: the 1981 Level 3 Probabilistic Risk Assessment performance; the development of the Plant Specific Technical Guidelines from which the symptom oriented Emergency Operating Procedures (EOPs) were developed; the Control Room Design Review; and, the recent completion of the Individual Plant Evaluation (IPE). In addition to the historical presentation deliberation, this paper the present activities that continue to stress SAM strategies.

  6. Insensitive explosive composition and method of fracturing rock using an extrudable form of the composition

    DOE Patents [OSTI]

    Davis, Lloyd L

    2013-11-05

    Insensitive explosive compositions were prepared by reacting di-isocyanate and/or poly-isocyanate monomers with an explosive diamine monomer. Prior to a final cure, the compositions are extrudable. The di-isocyanate monomers tend to produce tough, rubbery materials while polyfunctional monomers (i.e. having more than two isocyanate groups) tend to form rigid products. The extrudable form of the composition may be used in a variety of applications including rock fracturing.

  7. Low Pore Connectivity in Natural Rock

    SciTech Connect (OSTI)

    Hu, Qinhong; Ewing, Robert P.; Dultz, Stefan

    2012-05-15

    As repositories for CO? and radioactive waste, as oil and gas reservoirs, and as contaminated sites needing remediation, rock formations play a central role in energy and environmental management. The connectivity of the rock's porespace strongly affects fluid flow and solute transport. This work examines pore connectivity and its implications for fluid flow and chemical transport. Three experimental approaches (imbibition, tracer concentration profiles, and imaging) were used in combination with network modeling. In the imbibition results, three types of imbibition slope [log (cumulative imbibition) vs. log (imbibition time)] were found: the classical 0.5, plus 0.26, and 0.26 transitioning to 0.5. The imbibition slope of 0.26 seen in Indiana sandstone, metagraywacke, and Barnett shale indicates low pore connectivity, in contrast to the slope of 0.5 seen in the well-connected Berea sandstone. In the tracer profile work, rocks exhibited different distances to the plateau porosity, consistent with the pore connectivity from the imbibition tests. Injection of a molten metal into connected pore spaces, followed by 2-D imaging of the solidified alloy in polished thin sections, allowed direct assessment of pore structure and lateral connection in the rock samples. Pore-scale network modeling gave results consistent with measurements, confirming pore connectivity as the underlying cause of both anomalous behaviors: imbibition slope not having the classical value of 0.5, and accessible porosity being a function of distance from the edge. A poorly connected porespace will exhibit anomalous behavior in fluid flow and chemical transport, such as a lower imbibition slope (in air–water system) and diffusion rate than expected from classical behavior.

  8. Rock Chalk Report, January 9, 2013

    E-Print Network [OSTI]

    2013-01-09

    to both Baseball and Softball) on sale now! Season Tickets starting as low as $50! Earn two Williams Education Fund Priority Points per sport when you buy Baseball and Softball season tickets! Spirit Squad The University... of Kansas Spirit Squad The KU Cheer Squad and Rock Chalk Dancers will perform their National Competition routines on January 13 @ 4PM & 6PM! This event will be prior to their departure for Orlando to compete in the UCA/UDA College Nationals. This event...

  9. Hydrothermally Deposited Rock | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History View NewTexas: Energy Resources JumpNewTexas:Hydrothermally Deposited Rock Jump to: navigation,

  10. Rock Lab Analysis | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onRAPID/Geothermal/Exploration/ColoradoRemsenburg-Speonk, NewMichigan: Energy Resources Jump to:Rock

  11. Rock, Wisconsin: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onRAPID/Geothermal/Exploration/ColoradoRemsenburg-Speonk, NewMichigan: Energy Resources JumpMtSampling Jump to:Rock,

  12. Squirt flow in fully saturated rocks

    SciTech Connect (OSTI)

    Dvorkin, J.; Mavko, G.; Nur, A. [Stanford Univ., CA (United States). Dept. of Geophysics] [Stanford Univ., CA (United States). Dept. of Geophysics

    1995-01-01

    The authors estimate velocity/frequency dispersion and attenuation in fully saturated rocks by employing the squirt-flow mechanism of solid-fluid interaction. In this model, pore fluid is squeezed from thin soft cracks into the surrounding large pores. Information about the compliance of these soft cracks at low confining pressures is extracted from high-pressure velocity data. The frequency dependence of squirt-induced pressure in the soft cracks is linked with the porosity and permeability of the soft pore space, and the characteristic squirt-flow length. These unknown parameters are combined into one expression that is assumed to be a fundamental rock property that does not depend on frequency. The appropriate value of this expression for a given rock can be found by matching the authors theoretical predictions with the experimental measurements of attenuation or velocity. The low-frequency velocity limits, as given by their model, are identical to those predicted by Gassmann`s formula. The high-frequency limits may significant exceed those given by the Biot theory: the high-frequency frame bulk modulus is close to that measured at high confining pressure. They have applied their model to D`Euville Limestone, Navajo Sandstone, and Westerly Granite. The model realistically predicts the observed velocity/frequency dispersion, and attenuation.

  13. Gage for measuring displacements in rock samples

    DOE Patents [OSTI]

    Holcomb, David J. (Albuquerque, NM); McNamee, Michael J. (Albuquerque, NM)

    1986-01-01

    A gage for measuring diametral displacement within a rock sample for use in a rock mechanics laboratory and in the field, comprises a support ring housing a linear variable differential transformer, a mounting screw, and a leaf spring. The mounting screw is adjustable and defines a first point of contact with the rock sample. The leaf spring has opposite ends fixed to the inner periphery of the mounting ring. An intermediate portion of the leaf spring projecting radially inward from the ring is formed with a dimple defining a second point of contact with the sample. The first and second points of contact are diametrically opposed to each other. The LVDT is mounted in the ring with its axis parallel to the line of measurement and its core rod received in the dimple of the leaf spring. Any change in the length of the line between the first and second support points is directly communicated to the LVDT. The leaf spring is rigid to completely support lateral forces so that the LVDT is free of all load for improved precision.

  14. Gage for measuring displacements in rock samples

    DOE Patents [OSTI]

    Holcomb, D.J.; McNamee, M.J.

    1985-07-18

    A gage for measuring diametral displacement within a rock sample for use in a rock mechanics laboratory and in the field, comprises a support ring housing a linear variable differential transformer (LVDT), a mounting screw, and a leaf spring. The mounting screw is adjustable and defines a first point of contact with the rock sample. The leaf spring has opposite ends fixed to the inner periphery of the mounting ring. An intermediate portion of the leaf spring projecting radially inward from the ring is formed with a dimple defining a second point of contact with the sample. The first and second points of contact are diametrically opposed to each other. The LVDT is mounted in the ring with its axis parallel to the line of measurement and its core rod received in the dimple of the leaf spring. Any change in the length of the line between the first and second support points is directly communicated to the LVDT. The leaf spring is rigid to completely support lateral forces so that the LVDT is free of all load for improved precision.

  15. GEOTECHNICAL ASSESSMENT AND INSTRUMENTATION NEEDS FOR NUCLEAR WASTE ISOLATION IN CRYSTALLINE AND ARGILLACEOUS ROCKS SYMPOSIUM

    E-Print Network [OSTI]

    Authors, Various

    2011-01-01

    Characterization of Rock Masses Structural GeologicalCharacterization of Rock Masses . • • • • • • • • 5.2.1 Structural Geological

  16. Earth materials and earth dynamics

    SciTech Connect (OSTI)

    Bennett, K; Shankland, T. [and others

    2000-11-01

    In the project ''Earth Materials and Earth Dynamics'' we linked fundamental and exploratory, experimental, theoretical, and computational research programs to shed light on the current and past states of the dynamic Earth. Our objective was to combine different geological, geochemical, geophysical, and materials science analyses with numerical techniques to illuminate active processes in the Earth. These processes include fluid-rock interactions that form and modify the lithosphere, non-linear wave attenuations in rocks that drive plate tectonics and perturb the earth's surface, dynamic recrystallization of olivine that deforms the upper mantle, development of texture in high-pressure olivine polymorphs that create anisotropic velocity regions in the convecting upper mantle and transition zone, and the intense chemical reactions between the mantle and core. We measured physical properties such as texture and nonlinear elasticity, equation of states at simultaneous pressures and temperatures, magnetic spins and bonding, chemical permeability, and thermal-chemical feedback to better characterize earth materials. We artificially generated seismic waves, numerically modeled fluid flow and transport in rock systems and modified polycrystal plasticity theory to interpret measured physical properties and integrate them into our understanding of the Earth. This is the final report of a three-year, Laboratory-Directed Research and Development (LDRD) project at the Los Alamos National Laboratory (LANL).

  17. Material Misfits

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Issues submit Material Misfits How well nanocomposite materials align at their interfaces determines what properties they have, opening broad new avenues of materials-science...

  18. Hot dry rock venture risks investigation:

    SciTech Connect (OSTI)

    Not Available

    1988-01-01

    This study assesses a promising resource in central Utah as the potential site of a future commerical hot dry rock (HDR) facility for generating electricity. The results indicate that, if the HDR reservoir productivity equals expectations based on preliminary results from research projects to date, a 50 MWe HDR power facility at Roosevelt Hot Springs could generate power at cost competitive with coal-fired plants. However, it is imperative that the assumed productivity be demonstrated before funds are committed for a commercial facility. 72 refs., 39 figs., 38 tabs.

  19. DOE - Office of Legacy Management -- Slick Rock

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal Gas &SCE-SessionsSouth DakotaRobbins and Myers Co - OH 51SavannahMill SiteSlick Rock

  20. Category:Rock Density | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION JEnvironmentalBowerbank,CammackFLIR Jump to:RAPID Roadmap ContactRock Density Jump to: navigation,

  1. Isotopic Analysis- Rock | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIXsource History View NewGuam:on OpeneiAlbanianStudy)savingsInformationRock Jump to:

  2. Sensitivity analysis of GSI based mechanical characterization of rock mass

    E-Print Network [OSTI]

    Ván, P

    2012-01-01

    Recently, the rock mechanical and rock engineering designs and calculations are frequently based on Geological Strength Index (GSI) method, because it is the only system that provides a complete set of mechanical properties for design purpose. Both the failure criteria and the deformation moduli of the rock mass can be calculated with GSI based equations, which consists of the disturbance factor, as well. The aim of this paper is the sensitivity analysis of GSI and disturbance factor dependent equations that characterize the mechanical properties of rock masses. The survey of the GSI system is not our purpose. The results show that the rock mass strength calculated by the Hoek-Brown failure criteria and both the Hoek-Diederichs and modified Hoek-Diederichs deformation moduli are highly sensitive to changes of both the GSI and the D factor, hence their exact determination is important for the rock engineering design.

  3. Source rock geochemistry and liquid and solid petroleum occurrences of the Ouachita Mountains, Oklahoma

    SciTech Connect (OSTI)

    Curiale, J.A.

    1981-01-01

    Crude oils, solid bitumens and potential oil source rocks of the Frontal and Central Ouachita Mountains of southeastern Oklahoma were examined. The purposes of this study are to characterize the organic matter in each of these materials, and to correlate oils to potential source rocks in the Ouachita Mountains. Four Ouachita Mountain oils and seven solid bitumens (grahamite and impsonite were analyzed. The oils are paraffinic and range from 31.8 to 43.1 API gravity. Results indicate that the oils are thermally mature and generally unaltered. All four oils are commonly sourced, as suggested by n-alkane, sterane and hopane distributions, stable isotope ratios, infrared spectra and vanadium/nickel ratios. A common source for the solid bitumens is also suggested by isotope ratios and pyrolyzate characteristics. An origin due to crude oil biodegradation is suggested for these solids, based on carbon isotope ratios, elemental analyses, and sterane distributions of the solid bitumen pyrolyzates. Several stratigraphic intervals in the Ouachita Mountains possess adequate source potential for petroleum generation, based on contents of total organic carbon and extractable organic matter. Devonian rocks are oil-generative. The entire Paleozoic section examined is thermally mature enough to have generated oil, being located at about the middle of the oil window. In general, the best oil source potential is present in upper Ordovician (Polk Creek/Womble) rocks. Oil-source rock correlation techniques indicate that oils examined from the Frontal and Central Ouachita Mountains have a Siluro-Ordovician (Missouri Mountain-Polk Creek-Womble) source.

  4. United States National Waste Terminal Storage argillaceous rock studies

    SciTech Connect (OSTI)

    Brunton, G.D.

    1981-01-01

    The past and present argillaceous rock studies for the US National Waste Terminal Storage Program consist of: (1) evaluation of the geological characteristics of several widespread argillaceous formations in the United States; (2) laboratory studies of the physical and chemical properties of selected argillaceous rock samples; and (3) two full-scale in situ surface heater experiments that simulate the emplacement of heat-generating radioactive waste in argillaceous rock.

  5. Velocity and attenuation in partially molten rocks

    SciTech Connect (OSTI)

    Mavko, G.M.

    1980-10-10

    Interpretation of seismic velocity and attenuation in partially molten rocks has been limited, with few exceptions, to models that assume the melt to be distributed either as spheres or as thin films. However, other melt phase geometries, such as interconnected tubes along grain edges, might equally well account for seismic observations if there is a much larger fraction of melt. Seismic velocity and attenuation are estimated in rocks in which the melt phase has the tube geometry, and the results are compared with results expected for the more familiar film model under similar conditions. For a given melt fraction, tubes are found to give moduli intermediate between moduli for rigid spherical inclusions and compliant films. For example, in polycrystalline olivine at 20 kbar the model predicts a decrease in V/sub s/ of 10% and a decrease in V/sub p/ of 5% at 0.05 melt fraction, without considering inelastic relaxation. Shear attenuation appears to be dominated by viscous flow of melt between the tubes and/or films. For olivine the tube model predicts the increment of relaxation due to melt, ..delta mu../..mu.., to be 0.01 at 0.05 melt fraction. Relaxation of the bulk modulus is dominated by flow between melt pockets of different shape, heat flow, and solid-melt phase change. If melt is present, considerable bulk attenuation is expected, although the relaxation may be observable only at long periods, outside the seismic body wave band.

  6. Elastic properties of saturated porous rocks with aligned fractures

    E-Print Network [OSTI]

    2003-12-02

    of fluid properties on seismic characteristics. ... C. C. A . The host rock is permeated by a set of parallel fractures which are ..... Similar behaviour is ..... Page 14 ...

  7. Isotopic Analysis- Rock At Valles Caldera - Sulphur Springs Geothermal...

    Open Energy Info (EERE)

    Analysis- Rock Activity Date - 1995 Usefulness could be useful with more improvements DOE-funding Unknown Exploration Basis The study utilizes the fission-track dating method...

  8. Isotopic Analysis- Rock At Valles Caldera - Sulphur Springs Area...

    Open Energy Info (EERE)

    Area Exploration Technique Isotopic Analysis- Rock Activity Date Usefulness not indicated DOE-funding Unknown References Hisatoshi Ito, Kazuhiro Tanaka (1995) Insights On The...

  9. Isotopic Analysis- Rock At Kilauea East Rift Geothermal Area...

    Open Energy Info (EERE)

    Technique Isotopic Analysis- Rock Activity Date 1989 - 2000 Usefulness not indicated DOE-funding Unknown Exploration Basis The purpose of this study was to analyze deep core...

  10. Isotopic Analysis- Rock At Valles Caldera - Sulphur Springs Geothermal...

    Open Energy Info (EERE)

    Isotopic Analysis- Rock Activity Date - 2004 Usefulness useful regional reconnaissance DOE-funding Unknown Exploration Basis The study was undertaken to refine understanding of...

  11. Stress and fault rock controls on fault zone hydrology, Coso...

    Open Energy Info (EERE)

    fault zone hydrology, Coso geothermal field, CA Abstract In crystalline rock of the Coso Geothermal Field, CA, fractures are the primary source of permeability. At reservoir...

  12. Lithology and alteration mineralogy of reservoir rocks at Coso...

    Open Energy Info (EERE)

    in the overlying metamorphic rock acts as a cap to the productive zone and inhibits vertical movement of the geothermal fluids above the main upwelling zone. The upwelling...

  13. Lithology and Alteration Mineralogy of Reservoir Rocks at Coso...

    Open Energy Info (EERE)

    in the overlying metamorphic rock acts as a cap to the productive zone and inhibits vertical movement of the geothermal fluids above the main upwelling zone. The upwelling...

  14. Carbon Dioxide Geological Sequestration in Fractured Porous Rocks

    Office of Scientific and Technical Information (OSTI)

    Training and Research on Probabilistic Hydro-Thermo-Mechanical Modeling of Carbon Dioxide Geological Sequestration in Fractured Porous Rocks Gutierrez, Marte 54 ENVIRONMENTAL...

  15. Fractured rock stress-permeability relationships from in situ...

    Office of Scientific and Technical Information (OSTI)

    Fractured rock stress-permeability relationships from in situ data and effects of temperature and chemical-mechanical couplings Citation Details In-Document Search Title: Fractured...

  16. Fundamental Research on Percussion Drilling: Improved rock mechanics...

    Office of Scientific and Technical Information (OSTI)

    Fundamental Research on Percussion Drilling: Improved rock mechanics analysis, advanced simulation technology, and full-scale laboratory investigations Citation Details In-Document...

  17. Seepage into drifts in unsaturated fractured rock at Yucca Mountain

    E-Print Network [OSTI]

    Birkholzer, Jens; Li, Guomin; Tsang, Chin-Fu; Tsang, Yvonne

    1998-01-01

    Fractured Rock at Yucca Mountain Jens Birkholzer, Guomin Lrepository site at Yucca Mountain, Nevada, as it is locatedclimate conditions at Yucca Mountain. The numerical study is

  18. Rock Sampling At San Francisco Volcanic Field Area (Warpinski...

    Open Energy Info (EERE)

    geologically mapped the target area, obtained rock samples for age dating and mineral chemistry, performed gravity and magnetic surveys, and integrated these results to identify...

  19. Scientists Pass Solid Particles Through Rock in DOE-Sponsored...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    rock fractures in the laboratory. This technology has the potential for mapping fracture systems in detail and aid in determining reservoir characteristics. This research was...

  20. Carbonation Mechanism of Reservoir Rock by Supercritical Carbon...

    Open Energy Info (EERE)

    Technologies Project Type Topic 2 Supercritical Carbon Dioxide Reservoir Rock Chemical Interactions Project Description Supercritical CO2 is currently becoming a more...

  1. Heap Assumptions on Demand Andreas Podelski1

    E-Print Network [OSTI]

    Wies, Thomas

    PROTOTYPE IMPLEMENTATION OF A DEMAND DRIVEN NETWORK MONITORING ARCHITECTURE Augusto Ciuffoletti for demand driven monitoring, named gd2, that can be potentially integrated in the gLite framework. We capable of managing the scalability challenge offered by a Grid environment: i) demand driven

  2. Evaluation of Used Fuel Disposition in Clay-Bearing Rock

    SciTech Connect (OSTI)

    Jové Colón, Carlos F.; Weck, Philippe F.; Sassani, David H.; Zheng, Liange; Rutqvist, Jonny; Steefel, Carl I.; Kim, Kunhwi; Nakagawa, Seiji; Houseworth, James; Birkholzer, Jens; Caporuscio, Florie A.; Cheshire, Michael; Rearick, Michael S.; McCarney, Mary K.; Zavarin, Mavrik; Benedicto, Ana; Kersting, Annie B.; Sutton, Mark; Jerden, James; Frey, Kurt E.; Copple, Jacqueline M.; Ebert, William

    2014-08-29

    Radioactive waste disposal in shale/argillite rock formations has been widely considered given its desirable isolation properties (low permeability), geochemically reduced conditions, anomalous groundwater pressures, and widespread geologic occurrence. Clay/shale rock formations are characterized by their high content of clay minerals such as smectites and illites where diffusive transport and chemisorption phenomena predominate. These, in addition to low permeability, are key attributes of shale to impede radionuclide mobility. Shale host-media has been comprehensively studied in international nuclear waste repository programs as part of underground research laboratories (URLs) programs in Switzerland, France, Belgium, and Japan. These investigations, in some cases a decade or more long, have produced a large but fundamental body of information spanning from site characterization data (geological, hydrogeological, geochemical, geomechanical) to controlled experiments on the engineered barrier system (EBS) (barrier clay and seals materials). Evaluation of nuclear waste disposal in shale formations in the USA was conducted in the late 70’s and mid 80’s. Most of these studies evaluated the potential for shale to host a nuclear waste repository but not at the programmatic level of URLs in international repository programs. This report covers various R&D work and capabilities relevant to disposal of heat-generating nuclear waste in shale/argillite media. Integration and cross-fertilization of these capabilities will be utilized in the development and implementation of the shale/argillite reference case planned for FY15. Disposal R&D activities under the UFDC in the past few years have produced state-of-the-art modeling capabilities for coupled Thermal-Hydrological-Mechanical-Chemical (THMC), used fuel degradation (source term), and thermodynamic modeling and database development to evaluate generic disposal concepts. The THMC models have been developed for shale repository leveraging in large part on the information garnered in URLs and laboratory data to test and demonstrate model prediction capability and to accurately represent behavior of the EBS and the natural (barrier) system (NS). In addition, experimental work to improve our understanding of clay barrier interactions and TM couplings at high temperatures are key to evaluate thermal effects as a result of relatively high heat loads from waste and the extent of sacrificial zones in the EBS. To assess the latter, experiments and modeling approaches have provided important information on the stability and fate of barrier materials under high heat loads. This information is central to the assessment of thermal limits and the implementation of the reference case when constraining EBS properties and the repository layout (e.g., waste package and drift spacing). This report is comprised of various parts, each one describing various R&D activities applicable to shale/argillite media. For example, progress made on modeling and experimental approaches to analyze physical and chemical interactions affecting clay in the EBS, NS, and used nuclear fuel (source term) in support of R&D objectives. It also describes the development of a reference case for shale/argillite media. The accomplishments of these activities are summarized as follows: ? Development of a reference case for shale/argillite; ? Investigation of Reactive Transport and Coupled THM Processes in EBS: FY14; ? Update on Experimental Activities on Buffer/Backfill Interactions at elevated Pressure and Temperature; ? Thermodynamic Database Development: Evaluation Strategy, Modeling Tools, First-Principles Modeling of Clay, and Sorption Database Assessment; ? ANL Mixed Potential Model For Used Fuel Degradation: Application to Argillite and Crystalline Rock Environments.

  3. American Material Culture: Investigating a World War II Trash Dump

    SciTech Connect (OSTI)

    Julie Braun

    2005-10-01

    The Idaho National Laboratory: An Historical Trash Trove Historians and archaeologists love trash, the older the better. Sometimes these researchers find their passion in unexpected places. In this presentation, the treasures found in a large historic dump that lies relatively untouched in the middle of the Idaho National Laboratory (INL) will be described. The U.S. military used the central portion of the INL as one of only six naval proving grounds during World War II. They dumped trash in dry irrigation canals during and after their wartime activities and shortly before the federal government designated this arid and desolate place as the nation’s nuclear reactor testing station in 1949. When read critically and combined with memories and photographs, the 60-year old trash provides a glimpse into 1940s’ culture and the everyday lives of ordinary people who lived and worked during this time on Idaho’s desert. Thanks to priceless stories, hours of research, and the ability to read the language of historic artifacts, the dump was turned from just another trash heap into a treasure trove of 1940s memorabilia. Such studies of American material culture serve to fire our imaginations, enrich our understanding of past practices, and humanize history. Historical archaeology provides opportunities to integrate inanimate objects with animated narrative and, the more recent the artifacts, the more human the stories they can tell.

  4. ACOUSTICAL IMAGING AND MECHANICAL PROPERTIES OF SOFT ROCK AND MARINE SEDIMENTS

    SciTech Connect (OSTI)

    Thurman E. Scott, Jr., Ph.D.; Younane Abousleiman, Ph.D.; Musharraf Zaman, Ph.D., P.E.

    2002-11-18

    During the sixth quarter of this research project the research team developed a method and the experimental procedures for acquiring the data needed for ultrasonic tomography of rock core samples under triaxial stress conditions as outlined in Task 10. Traditional triaxial compression experiments, where compressional and shear wave velocities are measured, provide little or no information about the internal spatial distribution of mechanical damage within the sample. The velocities measured between platen-to-platen or sensor-to-sensor reflects an averaging of all the velocities occurring along that particular raypath across the boundaries of the rock. The research team is attempting to develop and refine a laboratory equivalent of seismic tomography for use on rock samples deformed under triaxial stress conditions. Seismic tomography, utilized for example in crosswell tomography, allows an imaging of the velocities within a discrete zone within the rock. Ultrasonic or acoustic tomography is essentially the extension of that field technology applied to rock samples deforming in the laboratory at high pressures. This report outlines the technical steps and procedures for developing this technology for use on weak, soft chalk samples. Laboratory tests indicate that the chalk samples exhibit major changes in compressional and shear wave velocities during compaction. Since chalk is the rock type responsible for the severe subsidence and compaction in the North Sea it was selected for the first efforts at tomographic imaging of soft rocks. Field evidence from the North Sea suggests that compaction, which has resulted in over 30 feet of subsidence to date, is heterogeneously distributed within the reservoir. The research team will attempt to image this very process in chalk samples. The initial tomographic studies (Scott et al., 1994a,b; 1998) were accomplished on well cemented, competent rocks such as Berea sandstone. The extension of the technology to weaker samples is more difficult but potentially much more rewarding. The chalk, since it is a weak material, also attenuates wave propagation more than other rock types. Three different types of sensors were considered (and tested) for the tomographic imaging project: 600 KHz PZT, 1 MHz PZT, and PVDF film sensors. 600 KHz PZT crystals were selected because they generated a sufficiently high amplitude pulse to propagate across the damaged chalk. A number of different configurations were considered for placement of the acoustic arrays. It was decided after preliminary testing that the most optimum arrangement of the acoustic sensors was to place three arrays of sensors, with each array containing twenty sensors, around the sample. There would be two horizontal arrays to tomographically image two circular cross-sectional planes through the rock core sample. A third array would be vertically oriented to provide a vertical cross-sectional view of the sample. A total of 260 acoustic raypaths would be shot and acquired in the horizontal acoustic array to create each horizontal tomographic image. The sensors can be used as both acoustic sources or as acoustic each of the 10 pulsers to the 10 receivers.

  5. Elemental composition of two cumulate rocks

    SciTech Connect (OSTI)

    Naeem, A.; Almohandis, A.A.

    1983-04-01

    Two cumulate rock samples K-185, K-250 from the Kapalagulu intrusion, W. Tanzania, were analyzed using X-ray fluorescence (XRF), wet chemical and neutron activation analysis (NAA) techniques. Major element oxides were determined by XRF and wet chemical methods, while the concentration of trace elements were measured by NAA, using high resolution Ge(Li) detector, minicomputer-based data acquisition system and off-line computer. The percentage of major oxides and sixteen trace elements have been reported. It has been found that Cr, Ni, and Co are highly concentrated in K-250 while Sc, and most of the major elements are more concentrated in K-185. The variation of major and trace elements in these two samples have been discussed.

  6. PTYS 109 LAB EXPLORATION AND DISCOVERY IN PLANETARY SCIENCE ROCKS AND MINERALS 133

    E-Print Network [OSTI]

    Cohen, Barbara Anne

    PTYS 109 LAB EXPLORATION AND DISCOVERY IN PLANETARY SCIENCE ROCKS AND MINERALS 133 Rocks and Minerals I. OBJECTIVES One of the many ways to study Earth is by examining the rocks that make up its types of rocks and minerals; · determine the formation and the history of each rock and mineral; · infer

  7. Assessment of industrial minerals and rocks in the controlled area

    SciTech Connect (OSTI)

    Castor, S.B.; Lock, D.E.

    1996-08-01

    Yucca Mountain in Nye County, Nevada, is a potential site for a permanent repository for high-level nuclear waste in Miocene ash flow tuff. The Yucca Mountain controlled area occupies approximately 98 km{sup 2} that includes the potential repository site. The Yucca Mountain controlled area is located within the southwestern Nevada volcanic field, a large area of Miocene volcanism that includes at least four major calderas or cauldrons. It is sited on a remnant of a Neogene volcanic plateau that was centered around the Timber Mountain caldera complex. The Yucca Mountain region contains many occurrences of valuable or potentially valuable industrial minerals, including deposits with past or current production of construction aggregate, borate minerals, clay, building stone, fluorspar, silicate, and zeolites. The existence of these deposits in the region and the occurrence of certain mineral materials at Yucca Mountain, indicate that the controlled area may have potential for industrial mineral and rock deposits. Consideration of the industrial mineral potential within the Yucca Mountain controlled area is mainly based on petrographic and lithologic studies of samples from drill holes in Yucca Mountain. Clay minerals, zeolites, fluorite, and barite, as minerals that are produced economically in Nevada, have been identified in samples from drill holes in Yucca Mountain.

  8. Covetic Materials

    Broader source: Energy.gov (indexed) [DOE]

    Can re-melt, dilute, alloy... Fabrication of Covetic Materials - Nanocarbon Infusion 3 4 Technical Approach Unusual Characteristics of Covetic Materials ("covalent" &...

  9. Experience with in situ measurement of rock deformability

    SciTech Connect (OSTI)

    Bieniawski, Z.T.

    1981-07-01

    Although in situ tests have the advantage of involving a large volume or rock tested under the same environmental conditions as are prevailing in the rock mass, such tests are expensive and time consuming. In addition, there are a number of controversial questions pertinent to in situ tests.

  10. Geophysical detection and structural characterization of discontinuities in rock

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Geophysical detection and structural characterization of discontinuities in rock slopes (J. Deparis geophysical methods (seismic, electric and electromagnetic) are available to address this problem, differing and geophysical methods for characterizing the rock mass. Section 2 is dedicated to a review of the main

  11. Carbonation Mechanism of Reservoir Rock by Supercritical Carbon Dioxide

    Broader source: Energy.gov [DOE]

    Project Objectives: Elucidate comprehensively the carbonation reaction mechanisms between supercritical carbon dioxide (scCO2) and reservoir rocks consisting of different mineralogical compositions in aqueous and non-aqueous environments at temperatures of up to 250ºC, and to develop chemical modeling of CO2-reservior rock interactions.

  12. RUPTURE BY DAMAGE ACCUMULATION IN ROCKS David Amitrano

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    RUPTURE BY DAMAGE ACCUMULATION IN ROCKS David Amitrano LIRIGM, Université J. Fourier, Grenoble of rocks is associated with microcracks nucleation and propagation, i.e. damage. The accumulation of damage as strength and modulus. The damage process can be studied both statically by direct observation of thin

  13. SEISMIC AND ROCK PHYSICS DIAGNOSTICS OF MULTISCALE RESERVOIR TEXTURES

    SciTech Connect (OSTI)

    Gary Mavko

    2003-06-30

    As part of our study on ''Relationships between seismic properties and rock microstructure'', we have studied (1) Effects of pore texture on porosity, permeability, and sonic velocity. We show how a relation can be found between porosity, permeability, and velocity by separating the formations of rocks with similar pore textures.

  14. Geological and mathematical framework for failure modes in granular rock

    E-Print Network [OSTI]

    Borja, Ronaldo I.

    Geological and mathematical framework for failure modes in granular rock Atilla Aydina, *, Ronaldo I. Borjab , Peter Eichhubla,1 a Department of Geological and Environmental Sciences, Stanford processes in granular rock and provide a geological framework for the corresponding structures. We describe

  15. Rock to Regolith Earth's Critical Zone on Volcanic Ocean Islands

    E-Print Network [OSTI]

    Geist, Dennis

    increases monotonically towards surface #12;Frost creep transport Frequency and depth of freezing event (f in a landscape? (the w question) What governs the efficiency of regolith transport? (the Q question) What lens growth #12;Ice lenses in soils Ice lenses in rock Water freezing in soil and rocks Murton et al

  16. Modeling of coupled thermodynamic and geomechanical performance of underground compressed air energy storage (CAES) in lined rock caverns

    E-Print Network [OSTI]

    Rutqvist, J.

    2013-01-01

    compressed air energy storage (CAES) in lined rock cavernsCompressed Air Energy Storage (CAES) in Lined Rock Cavernscompressed air energy storage (CAES) in concrete-lined rock

  17. material protection

    National Nuclear Security Administration (NNSA)

    %2A en Office of Weapons Material Protection http:www.nnsa.energy.govaboutusourprogramsnonproliferationprogramofficesinternationalmaterialprotectionandcooperation-1

  18. Critical Materials:

    Office of Environmental Management (EM)

    Extraction Separation Processes for Critical Materials in 30- 21 Stage Test Facility (Bruce Moyer) ......

  19. Materials Scientist

    Broader source: Energy.gov [DOE]

    Alternate Title(s):Materials Research Engineer; Metallurgical/Chemical Engineer; Product Development Manager;

  20. LABORATORY INVESTIGATIONS ON THE HYDRAULIC AND THERMOMECHANICAL PROPERTIES OF FRACTURED CRYSTALLINE ROCKS

    E-Print Network [OSTI]

    Witherspoon, P.A.

    2010-01-01

    PROPERTIES OF FRACTURED CRYSTALLINE ROCKS P. A. W i t h e ring of the behavior of crystalline rocks under the influencein Mined Caverns in Crystalline Rock^ ) of LBL. STRESS-FLOW

  1. Fracture characterization of clays and clay-like materials using flattened Brazilian Test

    E-Print Network [OSTI]

    Agaiby, Shehab Sherif Wissa

    2013-01-01

    Fracture mechanics has been used for many years to study the mechanical behavior of brittle and quasi-brittle materials like concrete, rock, wood, and ceramics. To date, the application of fracture mechanics to soils has ...

  2. Sodium sulfate heptahydrate: direct observation of crystallization in a porous material 

    E-Print Network [OSTI]

    Hamilton, Andrea; Hall, Christopher; Pel, Leo

    2008-10-15

    It is well known that sodium sulfate causes salt crystallization damage in building materials and rocks. However since the early 1900s the existence of the metastable heptahydrate has been largely forgotten and almost ...

  3. Evaluation of Five Sedimentary Rocks Other Than Salt for Geologic Repository Siting Purposes

    SciTech Connect (OSTI)

    Croff, A.G.; Lomenick, T.F.; Lowrie, R.S.; Stow, S.H.

    2003-11-15

    The US Department of Energy (DOE), in order to increase the diversity of rock types under consideration by the geologic disposal program, initiated the Sedimary ROck Program (SERP), whose immediate objectiv eis to evaluate five types of secimdnary rock - sandstone, chalk, carbonate rocks (limestone and dolostone), anhydrock, and shale - to determine the potential for siting a geologic repository. The evaluation of these five rock types, together with the ongoing salt studies, effectively results in the consideration of all types of relatively impermeable sedimentary rock for repository purposes. The results of this evaluation are expressed in terms of a ranking of the five rock types with respect to their potential to serve as a geologic repository host rock. This comparative evaluation was conducted on a non-site-specific basis, by use of generic information together with rock evaluation criteria (RECs) derived from the DOE siting guidelines for geologic repositories (CFR 1984). An information base relevant to rock evaluation using these RECs was developed in hydrology, geochemistry, rock characteristics (rock occurrences, thermal response, rock mechanics), natural resources, and rock dissolution. Evaluation against postclosure and preclosure RECs yielded a ranking of the five subject rocks with respect to their potential as repository host rocks. Shale was determined to be the most preferred of the five rock types, with sandstone a distant second, the carbonate rocks and anhydrock a more distant third, and chalk a relatively close fourth.

  4. Seismic and Acoustic Investigations of Rock Fall Initiation, Processes, and Mechanics

    E-Print Network [OSTI]

    Zimmer, Valerie Louise

    2011-01-01

    Seismic  and  Acoustic  Investigations  of  Rock  Fall  Initiation,  Processes,  Seismic  and  Acoustic  Investigations  of  Rock  Fall  Initiation,  Processes,  other  seismic  sources  was  an  iterative  process.    

  5. Method for inhibiting oxidation of metal sulfide-containing material

    DOE Patents [OSTI]

    Elsetinow, Alicia; Borda, Michael J.; Schoonen, Martin A.; Strongin, Daniel R.

    2006-12-26

    The present invention provides means for inhibiting the oxidation of a metal sulfide-containing material, such as ore mine waste rock or metal sulfide taiulings, by coating the metal sulfide-containing material with an oxidation-inhibiting two-tail lipid coating (12) thereon, thereby inhibiting oxidation of the metal sulfide-containing material in acid mine drainage conditions. The lipids may be selected from phospholipids, sphingolipids, glycolipids and combinations thereof.

  6. Characterising and modelling the excavation damaged zone (EDZ) in crystalline rock in the context of radioactive waste disposal

    E-Print Network [OSTI]

    Hudson, J.A.

    2009-01-01

    Institute of Rock and Soil Mechanics, Chinese Academy ofis designed for rock and soil mechanics. In a TOUGH-FLAC

  7. Materials Science

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Database (TPMD) Aerospace Structural Metals Database (ASMD) Damage Tolerant Design Handbook (DTDH) Microelectronics Packaging Materials Database (MPMD) Structural Alloys...

  8. Characterizing Flow in Oil Reservoir Rock Using Smooth Particle Hydrodynamics

    E-Print Network [OSTI]

    Holmes, David W.

    In this paper, a 3D Smooth Particle Hydrodynamics (SPH) simulator for modeling grain scale fluid flow in porous rock is presented. The versatility of the SPH method has driven its use in increasingly complex areas of flow ...

  9. Comparative Records of Time Nature of the rock record

    E-Print Network [OSTI]

    Polly, David

    : sequence stratigraphy · temporal excursions and sequential changes in chemical characteristicsComparative Records of Time · Nature of the rock record · principles of stratigraphy: · deposition of StratigraphyPrinciples of Stratigraphy continuous deposition erosion for 50 years renewed deposition 100 years

  10. The Effect of Heterogeneity on Matrix Acidizing of Carbonate Rocks 

    E-Print Network [OSTI]

    Keys, Ryan S.

    2010-07-14

    In matrix acidizing, the goal is to dissolve minerals in the rock to increase well productivity. This is accomplished by injecting an application-specific solution of acid into the formation at a pressure between the pore ...

  11. Zeolitization Of Intracaldera Sediments And Rhyolitic Rocks In...

    Open Energy Info (EERE)

    New Mexico, USA Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Zeolitization Of Intracaldera Sediments And Rhyolitic Rocks In The 1.25 Ma...

  12. ELECTRON HOLOGRAPHY OF NANOMAGNETS IN ROCKS AND BACTERIA

    E-Print Network [OSTI]

    Dunin-Borkowski, Rafal E.

    ELECTRON HOLOGRAPHY OF NANOMAGNETS IN ROCKS AND BACTERIA Rafal E. Dunin-Borkowski1 , Richard J-reversed thermo-remanent magnetization. #12;Magnetotactic bacteria provide the simplest example of the use

  13. Acid Fracture and Fracture Conductivity Study of Field Rock Samples 

    E-Print Network [OSTI]

    Underwood, Jarrod

    2013-11-15

    Acid fracturing is a well stimulation strategy designed to increase the productivity of a producing well. The parameters of acid fracturing and the effects of acid interaction on specific rock samples can be studied experimentally. Acid injection...

  14. Geochemical Data on Waters, Gases, Scales, and Rocks from the...

    Open Energy Info (EERE)

    Geochemical Data on Waters, Gases, Scales, and Rocks from the Dixie Valley Region, Nevada (1996-1999) Jump to: navigation, search OpenEI Reference LibraryAdd to library Report:...

  15. SEISMIC AND ROCK PHYSICS DIAGNOSTICS OF MULTISCALE RESERVOIR TEXTURES

    SciTech Connect (OSTI)

    Gary Mavko

    2003-06-01

    As part of our study on ''Relationships between seismic properties and rock microstructure'', we have studied (1) Elastic properties of clay minerals using Pulse Transmission experiments. We show measurements of elastic moduli and strain in clay minerals.

  16. Rock Hill Utilities- Water Heater and Heat Pump Rebate Program

    Office of Energy Efficiency and Renewable Energy (EERE)

    Through the SmartChoice program, Rock Hill Utilities offers rebates for water heater and heat pump replacements. Information on financing for heat pumps can also be found on the web site listed...

  17. Drilling Complete on Australian Hot Dry Rock Project

    Broader source: Energy.gov [DOE]

    The first commercial attempt to create a commercial geothermal power plant using hot dry rock technology reached a crucial milestone on January 22, when a production well successfully reached its target depth.

  18. Project Reports for Standing Rock Sioux Tribe- 2011 Project

    Broader source: Energy.gov [DOE]

    The Standing Rock Sioux Tribe's (SRST) cultural identity demands that tribal development occur in a sustainable manner and in a manner protective of the tribe's natural resources to preserve them for following generations.

  19. Zeolitization Of Intracaldera Sediments And Rhyolitic Rocks In...

    Open Energy Info (EERE)

    Zeolitization Of Intracaldera Sediments And Rhyolitic Rocks In The 1.25 Ma Lake Of Valles Caldera, New Mexico, Usa Abstract Quantitative X-ray diffraction analysis of about 80...

  20. Modeling of Seismic Signatures of Carbonate Rock Types 

    E-Print Network [OSTI]

    Jan, Badr H.

    2011-02-22

    Carbonate reservoirs of different rock types have wide ranges of porosity and permeability, creating zones with different reservoir quality and flow properties. This research addresses how seismic technology can be used to identify different...

  1. Laboratory measurements on reservoir rocks from The Geysers geothermal field

    SciTech Connect (OSTI)

    Boitnott, G.N.

    1995-01-26

    A suite of laboratory measurements have been conducted on Geysers metagraywacke and metashale recovered from a drilled depth of 2599 to 2602 meters in NEGU-17. The tests have been designed to constrain the mechanical and water-storage properties of the matrix material. Various measurements have been made at a variety of pressures and at varying degrees of saturation. Both compressional and shear velocities exhibit relatively little change with effective confining pressure. In all of the samples, water saturation causes an increase in the compressional velocity. In some samples, saturation results in a moderate decrease in shear velocity greater in magnitude than would be expected based on the slight increase in bulk density. It is found that the effect of saturation on the velocities can be quantitatively modeled through a modification of Biot-Gassmann theory to include weakening of the shear modulus with saturation. The decrease is attributed to chemo-mechanical weakening caused by the presence of water. The degree of frame weakening of the shear modulus is variable between samples, and appears correlated with petrographic features of the cores. Two related models are presented through which we can study the importance of saturation effects on field-scale velocity variations. The model results indicate that the saturation effects within the matrix are significant and may contribute to previously observed field anomalies. The results help to define ways in which we may be able to separate the effects of variations in rock properties, caused by phenomena such as degree of fracturing, from similar effects caused by variations in matrix saturation. The need for both compressional and shear velocity data in order to interpret field anomalies is illustrated through comparisons of model results with the field observations.

  2. Rock glacier monitoring with low-cost GPS

    E-Print Network [OSTI]

    moving stations on rock glacier Low-cost L1 GPS receivers (blox) Power source: solar panels Local data Rock glacier GPS antennaGPS antenna Solar panelSolar panel Box incl.Box incl. -GPS receiverData logger Instruments Solar panelSolar panel (24W, 12V, 50x50cm)(24W, 12V, 50x50cm) Costs per station: 2

  3. Predicting Rock Mass Decay in Engineering Lifetimes

    E-Print Network [OSTI]

    Hack, Robert

    GEORGE KENNETH HACK International Institute for Geo-Information Science and Earth Observation, P.O. Box 6 of fieldwork by the International Institute for Geo-Information Science and Earth Observation and Delft. In soluble materials such as the gypsum unit investigated here, water retention in slopes sheltered from

  4. Estimating seismic velocities at ultrasonic frequencies in partially saturated rocks

    SciTech Connect (OSTI)

    Mavko, G.; Nolen-Hoeksema, R. (Stanford Univ., CA (United States). Dept. of Geophysics)

    1994-02-01

    Seismic velocities in rocks at ultrasonic frequencies depend not only on the degree of saturation but also on the distribution of the fluid phase at various scales within the pore space. Two scales of saturation heterogeneity are important: (1) saturation differences between thin compliant pores and larger stiffer pores, and (2) differences between saturated patches and undersaturated patches at a scale much larger than any pore. The authors propose a formalism for predicting the range of velocities in partially saturated rocks that avoids assuming idealized pore shapes by using measured dry rock velocity versus pressure and dry rock porosity versus pressure. The pressure dependence contains all of the necessary information about the distribution of pore compliance for estimating effects of saturation at the finest scales where small amounts of fluid in the thinnest, most compliant parts of the pore space stiffen the rock in both compression and shear (increasing both P- and S-wave velocities) in approximately the same way that confining pressure stiffens the rock by closing the compliant pores. Large-scale saturation patches tend to increase only the high-frequency bulk modulus by amounts roughly proportional to the saturation. The pore-scale effects will be most important at laboratory and logging frequencies when pore-scale pore pressure gradients are unrelaxed. The patchy-saturation effects can persist even at seismic field frequencies if the patch sizes are sufficiently large and the diffusivities are sufficiently low for the larger-scale pressure gradients to be unrelaxed.

  5. Critical porosity: The key to relating physical properties to porosity in rocks

    SciTech Connect (OSTI)

    Nur, A.M.; Mavko, G.; Dvorkin, J.; Gal, D.

    1995-12-31

    Many classes of rock such as sandstones, dolomites, chalks, and cracked igneous rocks have each a distinct characteristic porosity above which the material behaves as s suspension. The porosity at which this system changes, or transforms from isostress to solid load-bearing is defined here as the critical porosity {phi}{sub c}. It is easy to envision that at {phi}{sub c} not only the mechanical moduli, but also other properties such as strength and electrical conductivity, may also undergo transformations. Consequently, the critical porosity must be a fundamental property of a given porous system, not just of one of its physical properties. The observed values of {phi}{sub c} range from .005 for cracked granites to .30 or .40 for limestones, dolomites and sandstones, .60 for chalks and .90 for volcanic glasses. The data suggest that (1) A critical porosity value {phi}{sub c} exists which is typical of a given class of porous materials. Each class is defined on the basis of its common mineralogy or diagenetic porosity reduction processes. (2) Given {phi}{sub c} it may be possible to closely approximate the relation between porosity and velocity, over the entire range of porosity, with a modified mixture relation, in which the mixed components are the pure solid on one end, and a critical suspension on the other. (3) Without {phi}{sub c}, theory cannot yield reliable or useful velocity-porosity relations.

  6. Scintillator material

    DOE Patents [OSTI]

    Anderson, David F. (Batavia, IL); Kross, Brian J. (Aurora, IL)

    1994-01-01

    An improved scintillator material comprising cerium fluoride is disclosed. Cerium fluoride has been found to provide a balance of good stopping power, high light yield and short decay constant that is superior to known scintillator materials such as thallium-doped sodium iodide, barium fluoride and bismuth germanate. As a result, cerium fluoride is favorably suited for use as a scintillator material in positron emission tomography.

  7. Scintillator material

    DOE Patents [OSTI]

    Anderson, David F. (Batavia, IL); Kross, Brian J. (Aurora, IL)

    1992-01-01

    An improved scintillator material comprising cerium fluoride is disclosed. Cerium fluoride has been found to provide a balance of good stopping power, high light yield and short decay constant that is superior to known scintillator materials such as thallium-doped sodium iodide, barium fluoride and bismuth germanate. As a result, cerium fluoride is favorably suited for use as a scintillator material in positron emission tomography.

  8. Scintillator material

    DOE Patents [OSTI]

    Anderson, D.F.; Kross, B.J.

    1994-06-07

    An improved scintillator material comprising cerium fluoride is disclosed. Cerium fluoride has been found to provide a balance of good stopping power, high light yield and short decay constant that is superior to known scintillator materials such as thallium-doped sodium iodide, barium fluoride and bismuth germanate. As a result, cerium fluoride is favorably suited for use as a scintillator material in positron emission tomography. 4 figs.

  9. Scintillator material

    DOE Patents [OSTI]

    Anderson, D.F.; Kross, B.J.

    1992-07-28

    An improved scintillator material comprising cerium fluoride is disclosed. Cerium fluoride has been found to provide a balance of good stopping power, high light yield and short decay constant that is superior to known scintillator materials such as thallium-doped sodium iodide, barium fluoride and bismuth germanate. As a result, cerium fluoride is favorably suited for use as a scintillator material in positron emission tomography. 4 figs.

  10. material recovery

    National Nuclear Security Administration (NNSA)

    dispose of dangerous nuclear and radiological material, and detect and control the proliferation of related WMD technology and expertise.

  11. H.R.G.K. Hack. Slopes in rock. An overview of engineering geology in the Netherlands. pp. 111-119 SLOPES IN ROCK

    E-Print Network [OSTI]

    Hack, Robert

    H.R.G.K. Hack. Slopes in rock. An overview of engineering geology in the Netherlands. pp. 111-119 SLOPES IN ROCK H.R.G.K. Hack ITC (Int.Inst. for Aerospace Survey and Earth Sciences), Section Engineering 'the rock is hard' (normally meaning: do not bother with further study because 111 #12;H.R.G.K. Hack

  12. Geophysical and transport properties of reservoir rocks. Final report for task 4: Measurements and analysis of seismic properties

    SciTech Connect (OSTI)

    Cook, N.G.W.

    1993-05-01

    The principal objective of research on the seismic properties of reservoir rocks is to develop a basic understanding of the effects of rock microstructure and its contained pore fluids on seismic velocities and attenuation. Ultimately, this knowledge would be used to extract reservoir properties information such as the porosity, permeability, clay content, fluid saturation, and fluid type from borehole, cross-borehole, and surface seismic measurements to improve the planning and control of oil and gas recovery. This thesis presents laboratory ultrasonic measurements for three granular materials and attempts to relate the microstructural properties and the properties of the pore fluids to P- and S-wave velocities and attenuation. These experimental results show that artificial porous materials with sintered grains and a sandstone with partially cemented grains exhibit complexities in P- and S-wave attenuation that cannot be adequately explained by existing micromechanical theories. It is likely that some of the complexity observed in the seismic attenuation is controlled by details of the rock microstructure, such as the grain contact area and grain shape, and by the arrangement of the grain packing. To examine these effects, a numerical method was developed for analyzing wave propagation in a grain packing. The method is based on a dynamic boundary integral equation and incorporates generalized stiffness boundary conditions between individual grains to account for viscous losses and grain contact scattering.

  13. Proceedings of the scientific visit on crystalline rock repository development.

    SciTech Connect (OSTI)

    Mariner, Paul E.; Hardin, Ernest L.; Miksova, Jitka

    2013-02-01

    A scientific visit on Crystalline Rock Repository Development was held in the Czech Republic on September 24-27, 2012. The visit was hosted by the Czech Radioactive Waste Repository Authority (RAWRA), co-hosted by Sandia National Laboratories (SNL), and supported by the International Atomic Energy Agency (IAEA). The purpose of the visit was to promote technical information exchange between participants from countries engaged in the investigation and exploration of crystalline rock for the eventual construction of nuclear waste repositories. The visit was designed especially for participants of countries that have recently commenced (or recommenced) national repository programmes in crystalline host rock formations. Discussion topics included repository programme development, site screening and selection, site characterization, disposal concepts in crystalline host rock, regulatory frameworks, and safety assessment methodology. Interest was surveyed in establishing a %E2%80%9Cclub,%E2%80%9D the mission of which would be to identify and address the various technical challenges that confront the disposal of radioactive waste in crystalline rock environments. The idea of a second scientific visit to be held one year later in another host country received popular support. The visit concluded with a trip to the countryside south of Prague where participants were treated to a tour of the laboratory and underground facilities of the Josef Regional Underground Research Centre.

  14. Analysis of compressive fracture in rock using statistical techniques

    SciTech Connect (OSTI)

    Blair, S.C.

    1994-12-01

    Fracture of rock in compression is analyzed using a field-theory model, and the processes of crack coalescence and fracture formation and the effect of grain-scale heterogeneities on macroscopic behavior of rock are studied. The model is based on observations of fracture in laboratory compression tests, and incorporates assumptions developed using fracture mechanics analysis of rock fracture. The model represents grains as discrete sites, and uses superposition of continuum and crack-interaction stresses to create cracks at these sites. The sites are also used to introduce local heterogeneity. Clusters of cracked sites can be analyzed using percolation theory. Stress-strain curves for simulated uniaxial tests were analyzed by studying the location of cracked sites, and partitioning of strain energy for selected intervals. Results show that the model implicitly predicts both development of shear-type fracture surfaces and a strength-vs-size relation that are similar to those observed for real rocks. Results of a parameter-sensitivity analysis indicate that heterogeneity in the local stresses, attributed to the shape and loading of individual grains, has a first-order effect on strength, and that increasing local stress heterogeneity lowers compressive strength following an inverse power law. Peak strength decreased with increasing lattice size and decreasing mean site strength, and was independent of site-strength distribution. A model for rock fracture based on a nearest-neighbor algorithm for stress redistribution is also presented and used to simulate laboratory compression tests, with promising results.

  15. Cermet materials

    DOE Patents [OSTI]

    Kong, Peter C. (Idaho Falls, ID)

    2008-12-23

    A self-cleaning porous cermet material, filter and system utilizing the same may be used in filtering particulate and gaseous pollutants from internal combustion engines having intermetallic and ceramic phases. The porous cermet filter may be made from a transition metal aluminide phase and an alumina phase. Filler materials may be added to increase the porosity or tailor the catalytic properties of the cermet material. Additionally, the cermet material may be reinforced with fibers or screens. The porous filter may also be electrically conductive so that a current may be passed therethrough to heat the filter during use. Further, a heating element may be incorporated into the porous cermet filter during manufacture. This heating element can be coated with a ceramic material to electrically insulate the heating element. An external heating element may also be provided to heat the cermet filter during use.

  16. Composite material

    DOE Patents [OSTI]

    Hutchens, Stacy A. (Knoxville, TN); Woodward, Jonathan (Solihull, GB); Evans, Barbara R. (Oak Ridge, TN); O'Neill, Hugh M. (Knoxville, TN)

    2012-02-07

    A composite biocompatible hydrogel material includes a porous polymer matrix, the polymer matrix including a plurality of pores and providing a Young's modulus of at least 10 GPa. A calcium comprising salt is disposed in at least some of the pores. The porous polymer matrix can comprise cellulose, including bacterial cellulose. The composite can be used as a bone graft material. A method of tissue repair within the body of animals includes the steps of providing a composite biocompatible hydrogel material including a porous polymer matrix, the polymer matrix including a plurality of pores and providing a Young's modulus of at least 10 GPa, and inserting the hydrogel material into cartilage or bone tissue of an animal, wherein the hydrogel material supports cell colonization in vitro for autologous cell seeding.

  17. Laboratory evaluation of mechanical properties of rock using an automated triaxial compression test with a constant mean stress criterion

    SciTech Connect (OSTI)

    Mellegard, K.D.; Pfeifle, T.W.

    1999-07-01

    A computerized, servohydraulic test system has been used in the laboratory to perform axisymmetric, triaxial compression tests on natural rock salt using a load path that maintains constant mean stress. The constant mean stress test protocol illustrates that modern test systems allow a nonstandard load path which can focus on a particular aspect of rock characterization; namely, the onset of dilation. Included are discussions of how the constant mean stress test could be used to investigate material anisotropy and determine elastic moduli. The results from the constant mean stress tests are compared to test results from a traditional test method. The paper also addresses system calibration concerns and the effects of pressure changes on the direct-contact extensometers used to measure strain.

  18. Multiporosity Flow in Fractured Low-Permeability Rocks

    E-Print Network [OSTI]

    Kuhlman, Kristopher L; Heath, Jason E

    2015-01-01

    A multiporosity extension of classical double and triple porosity fractured rock flow models for slightly compressible fluids is presented. The multiporosity model is an adaptation of the multirate solute transport model of Haggerty and Gorelick (1995) to viscous flow in fractured rock reservoirs. It is a generalization of both pseudo-steady-state and transient interporosity flow double porosity models. The model includes a fracture continuum and an overlapping distribution of multiple rock matrix continua, whose fracture-matrix exchange coefficients are specified through a discrete probability mass function. Semi-analytical cylindrically symmetric solutions to the multiporosity mathematical model are developed using the Laplace transform to illustrate its behavior. The multiporosity model presented here is conceptually simple, yet flexible enough to simulate common conceptualizations of double and triple porosity flow. This combination of generality and simplicity makes the multiporosity model a good choice ...

  19. Improved characterization of reservoir behavior by integration of reservoir performances data and rock type distributions

    SciTech Connect (OSTI)

    Davies, D.K.; Vessell, R.K.; Doublet, L.E.

    1997-08-01

    An integrated geological/petrophysical and reservoir engineering study was performed for a large, mature waterflood project (>250 wells, {approximately}80% water cut) at the North Robertson (Clear Fork) Unit, Gaines County, Texas. The primary goal of the study was to develop an integrated reservoir description for {open_quotes}targeted{close_quotes} (economic) 10-acre (4-hectare) infill drilling and future recovery operations in a low permeability, carbonate (dolomite) reservoir. Integration of the results from geological/petrophysical studies and reservoir performance analyses provide a rapid and effective method for developing a comprehensive reservoir description. This reservoir description can be used for reservoir flow simulation, performance prediction, infill targeting, waterflood management, and for optimizing well developments (patterns, completions, and stimulations). The following analyses were performed as part of this study: (1) Geological/petrophysical analyses: (core and well log data) - {open_quotes}Rock typing{close_quotes} based on qualitative and quantitative visualization of pore-scale features. Reservoir layering based on {open_quotes}rock typing {close_quotes} and hydraulic flow units. Development of a {open_quotes}core-log{close_quotes} model to estimate permeability using porosity and other properties derived from well logs. The core-log model is based on {open_quotes}rock types.{close_quotes} (2) Engineering analyses: (production and injection history, well tests) Material balance decline type curve analyses to estimate total reservoir volume, formation flow characteristics (flow capacity, skin factor, and fracture half-length), and indications of well/boundary interference. Estimated ultimate recovery analyses to yield movable oil (or injectable water) volumes, as well as indications of well and boundary interference.

  20. Thermal-chemical-mechanical feedback during fluid-rock interactions: Implications for chemical transport and scales of equilibria in the crust

    SciTech Connect (OSTI)

    Dutrow, Barbara

    2008-08-13

    Our research evaluates the hypothesis that feedback amongst thermal-chemical-mechanical processes operative in fluid-rock systems alters the fluid flow dynamics of the system which, in turn, affects chemical transport and temporal and spatial scales of equilibria, thus impacting the resultant mineral textural development of rocks. Our methods include computational experimentation and detailed analyses of fluid-infiltrated rocks from well-characterized terranes. This work focuses on metamorphic rocks and hydrothermal systems where minerals and their textures are utilized to evaluate pressure (P), temperature (T), and time (t) paths in the evolution of mountain belts and ore deposits, and to interpret tectonic events and the timing of these events. Our work on coupled processes also extends to other areas where subsurface flow and transport in porous media have consequences such as oil and gas movement, geothermal system development, transport of contaminants, nuclear waste disposal, and other systems rich in fluid-rock reactions. Fluid-rock systems are widespread in the geologic record. Correctly deciphering the products resulting from such systems is important to interpreting a number of geologic phenomena. These systems are characterized by complex interactions involving time-dependent, non-linear processes in heterogeneous materials. While many of these interactions have been studied in isolation, they are more appropriately analyzed in the context of a system with feedback. When one process impacts another process, time and space scales as well as the overall outcome of the interaction can be dramatically altered. Our goals to test this hypothesis are: to develop and incorporate algorithms into our 3D heat and mass transport code to allow the effects of feedback to be investigated numerically, to analyze fluid infiltrated rocks from a variety of terranes at differing P-T conditions, to identify subtle features of the infiltration of fluids and/or feedback, and to quantify the importance of feedback in complex fluid-rock systems and its affects on time and space scales and rates of reaction. We have made significant contributions toward understanding feedback and its impacts by numerical experimentation using 3D computational modeling of fluid-rock systems and by chemical and textural analyses of fluid-infiltrated rocks.

  1. SEISMIC AND ROCK PHYSICS DIAGNOSTICS OF MULTISCALE RESERVOIR TEXTURES

    SciTech Connect (OSTI)

    Gary Mavko

    2003-10-01

    As part of our study on ''Relationships between seismic properties and rock microstructure'', we have (1) Studied relationships between velocity and permeability. (2) Used independent experimental methods to measure the elastic moduli of clay minerals as functions of pressure and saturation. (3) Applied different statistical methods for characterizing heterogeneity and textures from scanning acoustic microscope (SAM) images of shale microstructures. (4) Analyzed the directional dependence of velocity and attenuation in different reservoir rocks (5) Compared Vp measured under hydrostatic and non-hydrostatic stress conditions in sands. (6) Studied stratification as a source of intrinsic anisotropy in sediments using Vp and statistical methods for characterizing textures in sands.

  2. Complex Materials

    SciTech Connect (OSTI)

    Cooper, Valentino

    2014-04-17

    Valentino Cooper uses some of the world's most powerful computing to understand how materials work at subatomic levels, studying breakthroughs such as piezoelectrics, which convert mechanical stress to electrical energy.

  3. Complex Materials

    ScienceCinema (OSTI)

    Cooper, Valentino

    2014-05-23

    Valentino Cooper uses some of the world's most powerful computing to understand how materials work at subatomic levels, studying breakthroughs such as piezoelectrics, which convert mechanical stress to electrical energy.

  4. material removal

    National Nuclear Security Administration (NNSA)

    %2A en Nuclear Material Removal http:www.nnsa.energy.govaboutusourprogramsdnnm3remove

    Pag...

  5. Propulsion materials

    SciTech Connect (OSTI)

    Wall, Edward J.; Sullivan, Rogelio A.; Gibbs, Jerry L.

    2008-01-01

    The Department of Energy’s (DOE’s) Office of Vehicle Technologies (OVT) is pleased to introduce the FY 2007 Annual Progress Report for the Propulsion Materials Research and Development Program. Together with DOE national laboratories and in partnership with private industry and universities across the United States, the program continues to engage in research and development (R&D) that provides enabling materials technology for fuel-efficient and environmentally friendly commercial and passenger vehicles.

  6. Hot dry rock energy: Hot dry rock geothermal development program. Progress report. Fiscal year 1993

    SciTech Connect (OSTI)

    Salazar, J.; Brown, M. [eds.

    1995-03-01

    Extended flow testing at the Fenton Hill Hot Dry Rock (HDR) test facility concluded in Fiscal Year 1993 with the completion of Phase 2 of the long-term flow test (LTFT) program. As is reported in detail in this report, the second phase of the LTFT, although only 55 days in duration, confirmed in every way the encouraging test results of the 112-day Phase I LTFT carried out in Fiscal Year 1992. Interim flow testing was conducted early in FY 1993 during the period between the two LTFT segments. In addition, two brief tests involving operation of the reservoir on a cyclic schedule were run at the end of the Phase 2 LTFT. These interim and cyclic tests provided an opportunity to conduct evaluations and field demonstrations of several reservoir engineering concepts that can now be applied to significantly increase the productivity of HDR systems. The Fenton Hill HDR test facility was shut down and brought into standby status during the last part of FY 1993. Unfortunately, the world`s largest, deepest, and most productive HDR reservoir has gone essentially unused since that time.

  7. [Investigation of ultrasonic wave interactions with fluid-saturated porous rocks]. [Annual report

    SciTech Connect (OSTI)

    Adler, L.

    1992-07-01

    During the last two years we have continued our investigation of ultrasonic wave propagation in fluid-filled porous materials. First, we studied the feasibility of using different surface modes to characterize both synthetic and natural rocks. We introduced a novel experimental technique based on the direct generation of surface waves by edge excitation. We used two low-frequency (100--500 kHz) shear transducers in pitch-catch mode to launch and receive the ultrasonic surface wave. The contact transducers were coupled to the opposite edges of the porous specimens with normal polarization relative to the surface. The same technique was successfully used to generate Rayleigh-type surface modes on the free surface of both dry and water-saturated specimens, as well as Stoneley-type interface modes on the fluid-loaded surfaces of immersed samples. Our main achievement in this area is the realization that, due to surface tension, practically closed-pore boundary conditions can prevail on the free surface of a water-saturated rock for completely open pores. As a result, the velocity of the true surface mode might be much lower than the Rayleigh velocity of the dry skeleton.

  8. (Investigation of ultrasonic wave interactions with fluid-saturated porous rocks)

    SciTech Connect (OSTI)

    Adler, L.

    1992-01-01

    During the last two years we have continued our investigation of ultrasonic wave propagation in fluid-filled porous materials. First, we studied the feasibility of using different surface modes to characterize both synthetic and natural rocks. We introduced a novel experimental technique based on the direct generation of surface waves by edge excitation. We used two low-frequency (100--500 kHz) shear transducers in pitch-catch mode to launch and receive the ultrasonic surface wave. The contact transducers were coupled to the opposite edges of the porous specimens with normal polarization relative to the surface. The same technique was successfully used to generate Rayleigh-type surface modes on the free surface of both dry and water-saturated specimens, as well as Stoneley-type interface modes on the fluid-loaded surfaces of immersed samples. Our main achievement in this area is the realization that, due to surface tension, practically closed-pore boundary conditions can prevail on the free surface of a water-saturated rock for completely open pores. As a result, the velocity of the true surface mode might be much lower than the Rayleigh velocity of the dry skeleton.

  9. Evidence for the incorporation of lead into barite from waste rock pile materials

    E-Print Network [OSTI]

    COURTIN-NOMADE, ALEXANDRA

    2009-01-01

    practice and application of micro-PIXE analysis and element-ray emission technique (micro-PIXE). These measurements were45 min). FIGURE 2. (a) Micro-PIXE elemental map of Pb, Ba,

  10. Evidence for the incorporation of lead into barite from waste rock pile materials

    E-Print Network [OSTI]

    COURTIN-NOMADE, ALEXANDRA

    2009-01-01

    into barite rather than goethite. Results from micro-Ramanhave been ascribed to goethite (23, 30, 31). Those at 456 (?as a mixture of barite and goethite at the resolution of the

  11. Auxiliary Material for "Formation of Methane on Mars by Fluid-Rock Interaction in the Crust"

    E-Print Network [OSTI]

    Nimmo, Francis

    meteorites, is lower and more variable than terrestrial basalts [Stolper and McSween, 1979; Smith and Hervig concentration because of degassing during crystallization and terrestrial contamination [Jull et al., 1998 source. Isotopically very light CH4 (Kinetic

  12. Onboard Autonomous Rock Shape Analysis For Mars Rovers

    E-Print Network [OSTI]

    in this process, we present an automated technique to allow a rover to classify the shape and other geologic were conducted by characterizing the two-dimensional rock shape while the three-dimensional shape developed and implemented. The per- formance of each measure was characterized by analyzing images from

  13. Ion beam analyses of radionuclide migration in heterogeneous rocks

    SciTech Connect (OSTI)

    Alonso, Ursula; Missana, Tiziana; Garcia-Gutierrez, Miguel [CIEMAT, Avda. Complutense 40, Madrid 28040 (Spain); Patelli, Alessandro [CIVEN, Via delle Industrie 5, Venezia-Marghera 30175 (Italy); Rigato, Valentino; Ceccato, Daniele [LNL-INFN, Viale dell' Universita 2, Legnaro-Padova 35020 (Italy)

    2013-07-18

    The migration of radionuclides (RN) in the environment is a topic of general interest, for its implications on public health, and it is an issue for the long-term safety studies of deep geological repositories (DGR) for high-level radioactive waste. The role played by colloids on RN migration is also of great concern. Diffusion and sorption are fundamental mechanisms controlling RN migration in rocks and many experimental approaches are applied to determine transport parameters for low sorbing RN in homogeneous rocks. However, it is difficult to obtain relevant data for high sorbing RN or colloids, for which diffusion lengths are extremely short, or within heterogeneous rocks, where transport might be different in different minerals. The ion beam techniques Rutherford Backscattering Spectrometry (RBS) and micro-Particle Induced X-Ray Emission ({mu}PIXE), rarely applied in the field, were selected for their micro-analytical potential to study RN diffusion and surface retention within heterogeneous rocks. Main achievements obtained during last 12 years are highlighted.

  14. Rheological properties of minerals and rocks Shun-ichiro Karato

    E-Print Network [OSTI]

    1 Rheological properties of minerals and rocks Shun-ichiro Karato Yale University Department Earth" (edited by S. Karato) Wiley-Blackwell #12; 2 SUMMARY Plastic deformation in Earth and planetary. The rheological properties in the upper mantle are controlled mostly by temperature, pressure and water content

  15. A Holocene lacustrine rock platform around Storavatnet, Ostery, western

    E-Print Network [OSTI]

    Fossen, Haakon

    structures, and the time and mode of formation. Location Osterøy Island is at 60 300 N, just inland from, western Norway. The lake was converted to a reservoir in 1920 and therefore is subject to frequent changes Zealand, with an oceanic climate, Allen et al. (2002) interpreted the formation of a lacustrine rock

  16. Controlled Rocking Approach for the Seismic Resistance of Structures

    E-Print Network [OSTI]

    Bruneau, Michel

    for the design of a single bridge pier for a specified seismic demand and set of capacity protection limitsControlled Rocking Approach for the Seismic Resistance of Structures Michael POLLINO and Michel response that can allow the system to self-center after the excitation ceases. This approach to seismic

  17. SEISMIC AND ROCK PHYSICS DIAGNOSTICS OF MULTISCALE RESERVOIR TEXTURES

    SciTech Connect (OSTI)

    Gary Mavko

    2003-06-30

    As part of our study on ''Relationships between seismic properties and rock microstructure'', we have studied (1) Methods for detection of stress-induced velocity anisotropy in sands. (2) We have initiated efforts for velocity upscaling to quantify long-wavelength and short-wavelength velocity behavior and the scale-dependent dispersion caused by sediment variability in different depositional environments.

  18. SEISMIC AND ROCK PHYSICS DIAGNOSTICS OF MULTISCALE RESERVOIR TEXTURES

    SciTech Connect (OSTI)

    Gary Mavko

    2004-08-01

    As part of our study on ''Relationships between seismic properties and rock microstructure'', we have continued our work on analyzing well logs and microstructural constraints on seismic signatures. We report results of three studies in this report. The first one deals with fractures and faults that provide the primary control on the underground fluid flow through low permeability massive carbonate rocks. Fault cores often represent lower transmissibility whereas the surrounding damaged rocks and main slip surfaces are high transmissibility elements. We determined the physical properties of fault rocks collected in and around the fault cores of large normal faults in central Italy. After studying the P- and S-wave velocity variation during cycles of confining pressure, we conclude that a rigid pore frame characterizes the fault gouge whereas the fractured limestone comprises pores with a larger aspect ratio. The second study was to characterize the seismic properties of brine as its temperature decreases from 25 C to -21 C. The purpose was to understand how the transmitted wave changes with the onset of freezing. The main practical reason for this experiment was to use partially frozen brine as an analogue for a mixture of methane hydrate and water present in the pore space of a gas hydrate reservoir. In the third study we analyzed variations in dynamic moduli in various carbonate reservoirs. The investigations include log and laboratory data from velocity, porosity, permeability, and attenuation measurements.

  19. ACG Practical Rock Mechanics and Ground Support in Mining Courses

    E-Print Network [OSTI]

    Tobar, Michael

    CENTRE FOR GEOMECHANICS Ph: +61 8 6488 3300 Fax: +61 8 6488 1130 info for Geomechanics. Practical Rock Mechanics (Introduction) Short Course 28­29 July 2014 Course objectives This course is designed to develop specific underground mining geomechanics competencies for mine geologists

  20. Fluid Migration During Ice/Rock Planetesimal Differentiation 

    E-Print Network [OSTI]

    Raney, Robert 1987-

    2012-12-12

    fast melt water can segregate from the core of an ice-rich planetesimal. To answer this question we treat the core as two phase flow problem: a compacting viscous “solid” (ice/rock mixture) and a segregating liquid (melt water). The model developed...

  1. Rock dilation, nonlinear deformation, and pore pressure change under shear

    E-Print Network [OSTI]

    Lyakhovsky, Vladimir

    Rock dilation, nonlinear deformation, and pore pressure change under shear Yariv Hamiel a criterion and pore pressure response to a fault slip. We investigate the poroelastic response of two an increase of pore pressure with mean stress (according to Skempton coefficient B) under undrained conditions

  2. Colloid-facilitated radionuclide transport in fractured porous rock 

    E-Print Network [OSTI]

    Baek, Inseok

    1994-01-01

    phase, a carrier phase, and a stationary solid phase. In the basic model, one-dimensional advection in a single planar fracture of infinite extent is coupled with diffusion in the rock matrix perpendicular to the fracture. In this study, a full...

  3. Technical Note Evaluation of mechanical rock properties using a Schmidt

    E-Print Network [OSTI]

    Ze'ev, Reches

    December 1999 1. Introduction The Schmidt Hammer was developed in 1948 for non-destructive testing±6]. Such fast, non-destructive and in situ evaluations of rock mechanical parameters reduce the expenses for sample collection and laboratory testing. Consequently, the mechanical parameters can be deter- mined

  4. Overview of conservation treatments applied to rock glyph archaeological sites 

    E-Print Network [OSTI]

    Dandridge, Debra E

    2000-01-01

    . Conservation efforts to save the world's ancient rock glyphs have been approached from a scientific basis for only the last twenty-five years. Many site managers, both private and public, have little knowledge of, or training in, the use of treatments that can...

  5. Used Fuel Disposal in Crystalline Rocks. FY15 Progress Report

    SciTech Connect (OSTI)

    Wang, Yifeng

    2015-08-20

    The objective of the Crystalline Disposal R&D Work Package is to advance our understanding of longterm disposal of used fuel in crystalline rocks and to develop necessary experimental and computational capabilities to evaluate various disposal concepts in such media.

  6. WATERJET ASSISTED POLYCRYSTALLINE DIAMOND INDENTATION DRILLING OF ROCK

    E-Print Network [OSTI]

    improved drilling rates can provide a significant benefit, justifying the costs and effort required both of drilling and completions of the wells can account for 25 ­ 50% of the cost of the electricity whichWATERJET ASSISTED POLYCRYSTALLINE DIAMOND INDENTATION DRILLING OF ROCK Santi, P, Bell, S

  7. Process of breaking and rendering permeable a subterranean rock mass

    DOE Patents [OSTI]

    Lekas, Mitchell A. (Concord, CA)

    1980-01-01

    The process of the present invention involves the following steps: producing, as by hydrofracing, a substantially horizontal fracture in the subterranean rock mass to be processed; emplacing an explosive charge in the mass in spaced juxtaposed position to the fracture; enlarging the fracture to create a void space thereat, an initial lifting of the overburden, and to provide a free face juxtaposed to and arranged to cooperate with the emplaced explosive charge; and exploding the charge against the free face for fragmenting the rock and to distribute the space, thus providing fractured, pervious, rubble-ized rock in an enclosed subterranean chamber. Firing of the charge provides a further lifting of the overburden, an enlargement of the chamber and a larger void space to distribute throughout the rubble-ized rock within the chamber. In some forms of the invention an explosive charge is used to produce a transitory enlargement of the fracture, and the juxtaposed emplaced charge is fired during the critical period of enlargement of the fracture.

  8. Columbia River Channel Improvement Project Rock Removal Blasting: Monitoring Plan

    SciTech Connect (OSTI)

    Carlson, Thomas J.; Johnson, Gary E.

    2010-01-29

    This document provides a monitoring plan to evaluate take as outlined in the National Marine Fisheries Service 2002 Biological Opinion for underwater blasting to remove rock from the navigation channel for the Columbia River Channel Improvement Project. The plan was prepared by the Pacific Northwest National Laboratory (PNNL) for the U.S. Army Corps of Engineers (USACE), Portland District.

  9. Layered rocks beneath the Phanerozoic platform of the US midcontinent

    SciTech Connect (OSTI)

    Hauser, E.C. (Cornell Univ., Ithaca, NY (United States))

    1991-03-01

    A thick sequence of layered rocks lies hidden beneath the Phanerozoic cover of the central US over large regions. A thick sequence of Precambrian layered rocks in imaged on the COCORP transect across southern Illinois and Indiana. The thickness of this layered sequence varies from 1-3 times the thickness of the overlying Phanerozoic section of the Illinois basin. The layered sequence is observed for close to 200 km in an east-west direction. Similar layered reflections are seen on the COCORP data from Hardeman Co., TX, and neighboring southwest Oklahoma. Both of these known occurrences lie within the region of the middle Proterozoic Granite/Rhyolite province of the US midcontinent, an area within which scattered wells to basement commonly encounter 1.3-1.5 Ga undeformed granite and/or compositionally similar rhyolite. Therefore, these layered assemblages may comprise a thick sequence of silicic volcanic and sedimentary rocks (perhaps also injected by mafic sills) between scattered volcanic-intrusive centers, such as exposed in the St. Francois Mountains of southeast Missouri. However, in places such as Illinois and Indiana, the near absence of deep wells leaves the possibility that the upper portion of these layered rocks may locally be of late Proterozoic or earliest Paleozoic age. The reprocessing of available industry data, analyzed in conjunction with the existing COCORP data, includes extended vibroseis correlation. These industry data are invaluable in the author's effort to expand the known distribution of these layered rocks (e.g., into north-central Illinois) and to map their structures.

  10. Hardfacing material

    DOE Patents [OSTI]

    Branagan, Daniel J. (Iona, ID)

    2012-01-17

    A method of producing a hard metallic material by forming a mixture containing at least 55% iron and at least one of boron, carbon, silicon and phosphorus. The mixture is formed into an alloy and cooled to form a metallic material having a hardness of greater than about 9.2 GPa. The invention includes a method of forming a wire by combining a metal strip and a powder. The metal strip and the powder are rolled to form a wire containing at least 55% iron and from two to seven additional elements including at least one of C, Si and B. The invention also includes a method of forming a hardened surface on a substrate by processing a solid mass to form a powder, applying the powder to a surface to form a layer containing metallic glass, and converting the glass to a crystalline material having a nanocrystalline grain size.

  11. The Clearlake Hot Dry Rock geothermal project: Institutional policies, administrative issues, and technical tasks

    SciTech Connect (OSTI)

    Burns, K.L.

    1991-01-01

    The Clearlake Project is a three-party collaboration between the California Energy Commission, City of Clearlake, and Los Alamos National Laboratory. It aims to develop a deep hot, dry geothermal resource under the city. The project is funded by the Commission, and administered by the City. Technical operations are conducted by Laboratory staff and resources seconded from the Hot Dry Rock program. In addition to the normal geothermal exploration problems of predicting geological and geophysical properties of the subsurface, there are uncertainties as to what further material and environmental parameters are relevant, and how they might be measured. In addition to technical factors, policy objectives are an influence in choosing the most appropriate development scenario. 11 refs., 4 figs.

  12. Deep crustal sediment study: Widespread precambrian layered rocks (sedimentary ?) beneath the US midcontinent

    SciTech Connect (OSTI)

    Hauser, E.C. [Cornell Univ., Ithaca, NY (United States)

    1992-05-01

    A thick sequence of layered rocks occurs beneath the Phanerozoic platform strata which blanket the U.S. midcontinent. Observed on COCORP deep reflection data in southern Illinois and Indiana and in SW Oklahoma and adjacent Texas, this sequence is locally 1-3 times as thick as the overlying Paleozoic cover, but the origin of this sequence, its ultimate lateral extent, and resource potential are unknown. The objective of this project is to seek and reprocess seismic reflection data provided by industry from the U.S. midcontinent, and together with the COCORP deep reflection data and information from the scattered basement-penetrating drill holes, to begin to constrain the distribution, origin and evolution of this enigmatic layered sequence, particularly to evaluate if sedimentary material may be an important constituent (i.e., deep gas potential).

  13. Deep crustal sediment study: Widespread Precambrian layered rocks (Sedimentary ) beneath the US midcontinent

    SciTech Connect (OSTI)

    Hauser, E.C.

    1992-01-01

    A thick sequence of layered rocks occurs beneath the Phanerozoic platform strata which blanket the US midcontinent. Observed on COCORP deep reflection data in southern Illinois and Indiana and in SW Oklahoma and adjacent Texas, this sequence is locally 1--3 times as thick as the overlying Paleozoic cover, but the origin of this sequence, its ultimate lateral extent, and resource potential are unknown. The objective of this project is to seek and reprocess seismic reflection data provided by industry from the US midcontinent and together with the COCORP deep reflection data and information from the scattered basement-penetrating drill holes, to begin to constrain the distribution, origin and evolution of this enigmatic layered sequence, particularly to evaluate if sedimentary material may be an important constituent (i.e., deep gas potential).

  14. Deep crustal sediment study: Widespread Precambrian layered rocks (Sedimentary ?) beneath the US midcontinent

    SciTech Connect (OSTI)

    Hauser, E.C.

    1992-06-01

    A thick sequence of layered rocks occurs beneath the Phanerozoic platform strata which blanket the US midcontinent. Observed on COCORP deep reflection data in southern Illinois and Indiana and in SW Oklahoma and adjacent Texas, this sequence is locally 1--3 times as thick as the overlying Paleozoic cover, but the origin of this sequence, its ultimate lateral extent, and resource potential are unknown. The objective of this project is to seek and reprocess seismic reflection data provided by industry from the US midcontinent and together with the COCORP deep reflection data and information from the scattered basement-penetrating drill holes, to begin to constrain the distribution, origin and evolution of this enigmatic layered sequence, particularly to evaluate if sedimentary material may be an important constituent (i.e., deep gas potential).

  15. Tracer Fluid Flow through Porous Media: Theory Applied to Acid Stimulation Treatments in Carbonate Rocks 

    E-Print Network [OSTI]

    Zakaria Mohamed Reda, Ahmed

    2014-07-29

    Most carbonate rocks are heterogeneous at multiple length scales. These heterogeneities strongly influence the outcome of the acid stimulation treatments which are routinely performed to improve well productivity. At the pore scale, carbonate rocks...

  16. The Use of Random Forest in Rock-glacier Automatic Detection based on Satellite Imagery

    E-Print Network [OSTI]

    Freitas, Nando de

    and observed global warming (Barsch, 1996), rock-glaciers are46 also threatened by major human activities variables derived10 from remote sensing imagery, together with the truth label (presence/absence of rock-11

  17. Rock-Water Interactions in the Fenton Hill, New Mexico, Hot Dry...

    Open Energy Info (EERE)

    Rock-Water Interactions in the Fenton Hill, New Mexico, Hot Dry Rock Geothermal Systems I. Fluid Mixing and Chemical Geothermometry Jump to: navigation, search OpenEI Reference...

  18. Integration of Rock Physics and Seismic Inversion for Carbonate Reservoir Characterization 

    E-Print Network [OSTI]

    Zhang, Tingting

    2014-12-12

    Carbonate reservoir characterization based on rock physics and seismic inversion helps in better understanding the influence of deposition and diagenesis on rock property. In this dissertation, I first study a modern carbonate platform to understand...

  19. Nonlinear Elastic Wave Experiments: Learning About the Behavior of Rocks and Geomaterials

    E-Print Network [OSTI]

    (historically) the macroscopic experiments that led to our cur- rent understanding of the peculiar nonlinearity of rocks were studied and all were found to be highly nonlinear; notably, sedimentary rocks (which are oil

  20. Geochemistry of silicate-rich rocks can curtail spreading of carbon dioxide in subsurface aquifers

    E-Print Network [OSTI]

    Cardoso, Silvana S. S.; Andres, J. T. H.

    2014-12-11

    in carbonate rocks the streaming of dissolved carbon dioxide persists, the chemical interactions in silicate-rich rocks may curb this transport drastically and even inhibit it altogether. These results challenge our view of carbon sequestration...

  1. Search for underground openings for in situ test facilities in crystalline rock

    SciTech Connect (OSTI)

    Wollenberg, H.A.; Strisower, B.; Corrigan, D.J.; Graf, A.N.; O'Brien, M.T.; Pratt, H.; Board, M.; Hustrulid, W.

    1980-01-01

    With a few exceptions, crystalline rocks in this study were limited to plutonic rocks and medium to high-grade metamorphic rocks. Nearly 1700 underground mines, possibly occurring in crystalline rock, were initially identified. Application of criteria resulted in the identification of 60 potential sites. Within this number, 26 mines and 4 civil works were identified as having potential in that they fulfilled the criteria. Thirty other mines may have similar potential. Most of the mines identified are near the contact between a pluton and older sedimentary, volcanic and metamorphic rocks. However, some mines and the civil works are well within plutonic or metamorphic rock masses. Civil works, notably underground galleries associated with pumped storage hydroelectric facilities, are generally located in tectonically stable regions, in relatively homogeneous crystalline rock bodies. A program is recommended which would identify one or more sites where a concordance exists between geologic setting, company amenability, accessibility and facilities to conduct in situ tests in crystalline rock.

  2. Project test plan for runoff and erosion on fine-soil barrier surfaces and rock-covered side slopes

    SciTech Connect (OSTI)

    Walters, W.H.; Hoover, K.A.; Cadwell, L.L.

    1990-06-01

    Pacific Northwest Laboratory (PNL) and Westinghouse Hanford Company are working together to develop protective barriers to isolate near-surface radioactive waste. The purpose of the barriers is to protect defense wastes at the US Department of Energy's (DOE) Hanford Site from infiltration of precipitation, biointrusion, and surficial erosion for up to 10,000 years without the need for long-term monitoring, maintenance, or institutional control. The barriers will be constructed of layered earth and rock material designed to direct surface and groundwater pathways away from the buried waste. To address soil erosion as it applies to barrier design and long-term stability, a task designed to study this problem has been included in the Protective Barriers Program at PNL. The barrier soil-erosion task will investigate the ability of the soil cover and side slopes to resist the erosional and destabilizing processes from externally applied water. The study will include identification and field testing of the dominant processes contributing to erosion and barrier failure. The effects of rock mulches, vegetation cover on the top fine-grained soil surface, as well as the stability of rock armoring on the side slopes, will be evaluated. Some of the testing will include the effects of animal intrusion on barrier erosion, and these will be coordinated with other animal intrusion studies. 6 refs., 4 figs., 1 tab.

  3. Coupled hydro-mechanical processes in crytalline rock and in induratedand plastic clays: A comparative discussion

    E-Print Network [OSTI]

    Tsang, Chin-Fu; Blumling, Peter; Bernier, Frederic

    2008-01-01

    at Grimsel. In Coupled Thermo-Hydro- Mechanical-ChemicalCOUPLED HYDRO-MECHANICAL PROCESSES IN CRYTALLINE ROCK AND IN

  4. Materials compatibility.

    SciTech Connect (OSTI)

    Somerday, Brian P.

    2010-04-01

    Objectives are to enable development and implementation of codes and standards for H{sub 2} containment components: (1) Evaluate data on mechanical properties of materials in H{sub 2} gas - Technical Reference on Hydrogen Compatibility of Materials; (2) Generate new benchmark data on high-priority materials - Pressure vessel steels, stainless steels; and (3) Establish procedures for reliable materials testing - Sustained-load cracking, fatigue crack propagation. Summary of this presentation are: (1) Completed measurement of cracking thresholds (K{sub TH}) for Ni-Cr-Mo pressure vessel steels in high-pressure H{sub 2} gas - K{sub TH} measurements required in ASME Article KD-10 (2) Crack arrest test methods appear to yield non-conservative results compared to crack initiation test methods - (a) Proposal to insert crack initiation test methods in Article KD-10 will be presented to ASME Project Team on Hydrogen Tanks, and (b) Crack initiation methods require test apparatus designed for dynamic loading of specimens in H{sub 2} gas; and (3) Demonstrated ability to measure fatigue crack growth of pressure vessel steels in high-pressure H{sub 2} gas - (a) Fatigue crack growth data in H{sub 2} required in ASME Article KD-10, and (b) Test apparatus is one of few in U.S. or abroad for measuring fatigue crack growth in >100 MPa H{sub 2} gas.

  5. Hydro-geologic Investigation of the Fresh Water lens in a Small Rock Principle Investigators

    E-Print Network [OSTI]

    Rhode Island, University of

    Hydro-geologic Investigation of the Fresh Water lens in a Small Rock Principle Investigators Daniel W. Urish #12;Abstract Rose Island is a small rock island located in Narragansett Bay, Rhode Island Island is a small 18.5 acre rock island located in Narragansett Bay, Rhode Island (Fig. 1

  6. 4.5 Rock Coatings RI Dorn, Arizona State University, Tempe, AZ, USA

    E-Print Network [OSTI]

    Dorn, Ron

    4.5 Rock Coatings RI Dorn, Arizona State University, Tempe, AZ, USA r 2013 Elsevier Inc. All rights reserved. 4.5.1 Introduction to Rock Coatings 70 4.5.2 Interpreting Rock Coatings through a Landscape: Subaerial Exposure of Subsurface Coatings 73 4.5.2.3 Third-Order Control: Competition from Lithobionts 78 4

  7. Systematic variation of bedrock channel gradients in the central Oregon Coast Range: implications for rock uplift

    E-Print Network [OSTI]

    Roering, Joshua J.

    for rock uplift and shallow landsliding Jeremiah S. Kobor*, Joshua J. Roering Department of Geological rock uplift for several million years, did not experience Pleistocene glaciation, boasts a relatively variability in bedrock channel gradients resulting from differential rock uplift or other sources. Consistent

  8. SOURCE AND EFFECT OF ACID ROCK DRAINAGE IN THE SNAKE RIVER WATERSHED, SUMMIT COUNTY, COLORADO

    E-Print Network [OSTI]

    SOURCE AND EFFECT OF ACID ROCK DRAINAGE IN THE SNAKE RIVER WATERSHED, SUMMIT COUNTY, COLORADO (the weathering of disseminated pyrite) sources of acid rock drainage (ARD). Stream waters and remediating the effects of acid rock drainage in the basin has given this research a real world application

  9. Bidirectional Seismic Behavior of Controlled Rocking Four-Legged Bridge Steel Truss Piers

    E-Print Network [OSTI]

    Bruneau, Michel

    Bidirectional Seismic Behavior of Controlled Rocking Four-Legged Bridge Steel Truss Piers Michael rocking bridge steel truss piers to three components of seismic excitation are presented in this paper. The controlled rocking approach for seismic protection allows a pier to uplift from its base, limiting the force

  10. Permeability, electrical impedance, and acoustic velocities on reservoir rocks from the Geysers geothermal field

    SciTech Connect (OSTI)

    Boitnott, G.N.; Boyd, P.J.

    1996-01-24

    Previous measurements of acoustic velocities on NEGU- 17 cores indicate that saturation effects are significant enough to cause Vp/Vs anomalies observed in the field. In this study we report on the results of new measurements on core recently recovered from SB-15-D along with some additional measurements on the NEGU-17 cores. The measurements indicate correlations between mechanical, transport, and water storage properties of the matrix which may prove useful for reservoir assessment and management. The SB-15-D material is found to be similar to the NEGU-17 material in terms of acoustic velocities, being characterized by a notably weak pressure dependence on the velocities and a modest Vp/Vs signature of saturation. The effect of saturation on Vp/Vs appears to result in part from a chemo-mechanical weakening of the shear modulus due to the presence of water. Electrical properties of SB-15-D material are qualitatively similar to those of the NEGU-17 cores, although resistivities of SB-15-D cores are notably lower and dielectric permittivities higher than in their NEGU- 17 counterparts. While some limited correlations of measured properties with depth are noted, no clear change in character is observed within SB-15-D cores which can be associated with the proposed cap-rock/reservoir boundary.

  11. Petrography and Bedrock Origin of Shelter Rock, a Large Glacial Erratic in Western Long Island, New York

    E-Print Network [OSTI]

    Merguerian, Charles

    Petrography and Bedrock Origin of Shelter Rock, a Large Glacial Erratic constrain the mineralogy and petrography of Shelter Rock. The dominant mineral suite

  12. Linked multicontinuum and crack tensor approach for modeling of coupled geomechanics, fluid flow and transport in fractured rock

    E-Print Network [OSTI]

    Rutqvist, J.

    2014-01-01

    porosity models for fluid transport in jointed rock. Journalof coupled fluid flow, solute transport, and geomechanics ingeomechanics, fluid flow and transport in fractured rock

  13. Panel discussion on rock mechanics issues in repository design

    SciTech Connect (OSTI)

    Bieniawski, Z.T.; Kim, K.S.; Nataraja, M.

    1996-04-01

    The panel discussion was introduced by Mr. Z.T.(Richard) Bieniawski and then continued with five additional speakers. The topics covered in the discussion included rock mechanics pertaining to the design of underground facilities for the disposal of radioactive wastes and the safety of such facilities. The speakers included: Mr. Kun-Soo Kim who is a specialist in the area of rock mechanics testing during the Basalt Waste Isolation Project; Dr. Mysore Nataraja who is the senior project manager with the NRC; Dr. Michael Voegele who is the project manager for Science Applications International Corporation (SAIC) on the Yucca Mountain Project; Dr. Edward Cording who is a member of the Nuclear Waste Technical Review Board; and Dr. Hemendra Kalia who is employed by Los Alamos National Laboratory and coordinates various activities of testing programs at the Yucca Mountain Site.

  14. Lithophysal Rock Mass Mechanical Properties of the Repository Host Horizon

    SciTech Connect (OSTI)

    D. Rigby

    2004-11-10

    The purpose of this calculation is to develop estimates of key mechanical properties for the lithophysal rock masses of the Topopah Spring Tuff (Tpt) within the repository host horizon, including their uncertainties and spatial variability. The mechanical properties to be characterized include an elastic parameter, Young's modulus, and a strength parameter, uniaxial compressive strength. Since lithophysal porosity is used as a surrogate property to develop the distributions of the mechanical properties, an estimate of the distribution of lithophysal porosity is also developed. The resulting characterizations of rock parameters are important for supporting the subsurface design, developing the preclosure safety analysis, and assessing the postclosure performance of the repository (e.g., drift degradation and modeling of rockfall impacts on engineered barrier system components).

  15. ForPeerReview Cavity expansion in cross anisotropic rock

    E-Print Network [OSTI]

    Wagner, Peter

    for Numerical and Analytical Methods in Geomechanics Manuscript ID: NAG-10-0026.R1 Wiley - Manuscript type in Geomechanics #12;ForPeerReview Only Cavity expansion in cross-anisotropic rock Dimitrios Kolymbas Peter Wagner://mc.manuscriptcentral.com/nag International Journal for Numerical and Analytical Methods in Geomechanics 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

  16. Fluid-Rock Characterization and Interactions in NMR Well Logging

    SciTech Connect (OSTI)

    Hirasaki, George J.; Mohanty, Kishore K.

    2003-02-10

    The objective of this project was to characterize the fluid properties and fluid-rock interactions that are needed for formation evaluation by NMR well logging. The advances made in the understanding of NMR fluid properties are summarized in a chapter written for an AAPG book on NMR well logging. This includes live oils, viscous oils, natural gas mixtures, and the relation between relaxation time and diffusivity.

  17. Buoyancy driven dispersion in a layered porous rock

    E-Print Network [OSTI]

    Farcas, Adrian; Woods, Andrew W.

    2015-02-12

    for example from a radioactive leak in a geological waste repository (Woods and Norris, 2010). One key challenge associated with modelling buoyancy driven flows in real rocks is the complex layering, on a range of length scales. In order to describe flows... ) Scaling, self-similarity and intermediate asymptotics. CUP, Cambridge. Bear, J. (1972) Dynamics of fluids in porous media. Elsevier. Bear, J., and Cheng A.H.-D (2010) Modeling groundwater flow and contaminant transport. Springer. Bijelic, J., Muggeridge A...

  18. Fluid-Rock Characterization and Interactions in NMR Well Logging

    SciTech Connect (OSTI)

    Hirasaki, George J.; Mohanty, Kishore K.

    2003-02-10

    The objective of this project was to characterize the fluid properties and fluid-rock interactions which are needed for formation evaluation by NMR well logging. NMR well logging is finding wide use in formation evaluation. The formation parameters commonly estimated were porosity, permeability, and capillary bound water. Special cases include estimation of oil viscosity, residual oil saturation, location of oil/water contact, and interpretation on whether the hydrocarbon is oil or gas.

  19. Overprinting Deformations in Mantle Rocks, Dun Mountain, New Zealand 

    E-Print Network [OSTI]

    Donnelly, Sara

    2014-04-25

    ; Hansen et al., 2012a). Understanding these relationships as well as the nature of deformation in poly- and mono- mineralic rocks give insight to natural deformations in the mantle. Understanding of mantle deformation comes from coupling studies...-pyroxene formulations and argued that the thermometer developed by Taylor (1998) most accurately reproduced temperatures of laboratory experiments designed to equilibrate co-existing pyroxenes. We have applied 22 Figure 8: REE and trace element...

  20. Neutron Production from the Fracture of Piezoelectric Rocks

    E-Print Network [OSTI]

    A. Widom; J. Swain; Y. N. Srivastava

    2012-02-08

    A theoretical explanation is provided for the experimental evidence that fracturing piezoelectric rocks produces neutrons. The elastic energy micro-crack production ultimately yields the macroscopic fracture. The mechanical energy is converted by the piezoelectric effect into electric field energy. The electric field energy decays via radio frequency (microwave) electric field oscillations. The radio frequency electric fields accelerate the condensed matter electrons which then collide with protons producing neutrons and neutrinos.

  1. Rock County, Minnesota: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onRAPID/Geothermal/Exploration/ColoradoRemsenburg-Speonk, NewMichigan: Energy Resources Jump to:Rock County, Minnesota:

  2. Rock County, Nebraska: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onRAPID/Geothermal/Exploration/ColoradoRemsenburg-Speonk, NewMichigan: Energy Resources Jump to:Rock County,

  3. Rock Island County, Illinois: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onRAPID/Geothermal/Exploration/ColoradoRemsenburg-Speonk, NewMichigan: Energy Resources Jump to:Rock County,Silver

  4. Rock Island, Florida: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onRAPID/Geothermal/Exploration/ColoradoRemsenburg-Speonk, NewMichigan: Energy Resources Jump to:Rock County,SilverIsland,

  5. Rock Point, Arizona: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onRAPID/Geothermal/Exploration/ColoradoRemsenburg-Speonk, NewMichigan: Energy Resources Jump to:RockPoint, Arizona: Energy

  6. Rock River LLC Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onRAPID/Geothermal/Exploration/ColoradoRemsenburg-Speonk, NewMichigan: Energy Resources Jump to:RockPoint, Arizona:

  7. Rock Sampling At Chena Geothermal Area (Kolker, 2008) | Open Energy

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onRAPID/Geothermal/Exploration/ColoradoRemsenburg-Speonk, NewMichigan: Energy Resources Jump to:RockPoint, Arizona:2012)

  8. Rock Sampling At Coso Geothermal Area (1995) | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onRAPID/Geothermal/Exploration/ColoradoRemsenburg-Speonk, NewMichigan: Energy Resources Jump to:RockPoint,

  9. Rock Sampling At Florida Mountains Area (Brookins, 1982) | Open Energy

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onRAPID/Geothermal/Exploration/ColoradoRemsenburg-Speonk, NewMichigan: Energy Resources Jump to:RockPoint,Information

  10. RockPort Capital Partners (California) | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onRAPID/Geothermal/Exploration/ColoradoRemsenburg-Speonk, NewMichigan: Energy Resources JumpMtSamplingRockPort Capital

  11. City of North Little Rock, Arkansas (Utility Company) | Open Energy

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION JEnvironmentalBowerbank,CammackFLIRChurchFontanelle,Information North Little Rock, Arkansas

  12. Chemical hydrofracturing of the Hot Dry Rock reservoir

    SciTech Connect (OSTI)

    Yakovlev, Leonid

    1996-01-24

    The experimental study of the water-rock interaction shows that the secondary mineral assemblage depends on the water composition. For example, granite-pure water interaction produces zeolites (relatively low-dense, Mg-poor minerals), whereas seawater yields chlorites (high-dense, Mg-rich minerals). The reactions have volumetric effects from several % to 20 % in magnitude. Volume deformations in the heterogeneous matrix cause uneven mechanical strains. Reactions with the effect of about 0,1 vol.% may cause strains of the order of 100-1000 bars being enough for destruction of rocks. Signs and magnitudes of local volume changes depend on the mineral composition of the secondary assemblage. Hence, one can provide either healing or cracking of primary fractures, as desired, by changing the composition of water in the water-felsic rock system where some elements (Mg, Fe) are in lack. The techniques of "chemical hydrofracturing" looks promising as applied to a granite HDR massif. One can regulate the permeability of fractured flow paths by changing in concord the composition and pressure of the injected water. This approach should promote efficient extraction of the petrothermal energy.

  13. Remedial action plan and site design for stabilization of the inactive uranium mill tailings sites at Slick Rock, Colorado. Remedial action selection report, Appendix B

    SciTech Connect (OSTI)

    Not Available

    1993-07-01

    The Slick Rock uranium mill tailings sites are located near the small town of Slick Rock, in San Miguel County, Colorado. There are two designated UMTRA sites at Slick Rock, the Union Carbide (UC) site and the North Continent (NC) site. Both sites are adjacent to the Dolores River. The UC site is approximately 1 mile (mi) [2 kilometers (km)] downstream of the NC site. Contaminated materials cover an estimated 55 acres (ac) [22 hectares (ha)] at the UC site and 12 ac (4.9 ha) at the NC site. The sites contain former mill building concrete foundations, tailings piles, demolition debris, and areas contaminated by windblown and waterborne radioactive materials. The total estimated volume of contaminated materials is approximately 620, 000 cubic yards (yd{sup 3}) [470,000 cubic meters (m{sup 3})]. In addition to the contamination at the two processing site areas, four vicinity properties were contaminated. Contamination associated with the UC and NC sites has leached into groundwater.

  14. Casting materials

    DOE Patents [OSTI]

    Chaudhry, Anil R. (Xenia, OH); Dzugan, Robert (Cincinnati, OH); Harrington, Richard M. (Cincinnati, OH); Neece, Faurice D. (Lyndurst, OH); Singh, Nipendra P. (Pepper Pike, OH)

    2011-06-14

    A foam material comprises a liquid polymer and a liquid isocyanate which is mixed to make a solution that is poured, injected or otherwise deposited into a corresponding mold. A reaction from the mixture of the liquid polymer and liquid isocyanate inside the mold forms a thermally collapsible foam structure having a shape that corresponds to the inside surface configuration of the mold and a skin that is continuous and unbroken. Once the reaction is complete, the foam pattern is removed from the mold and may be used as a pattern in any number of conventional casting processes.

  15. Construction material

    DOE Patents [OSTI]

    Wagh, Arun S. (Orland Park, IL); Antink, Allison L. (Bolingbrook, IL)

    2008-07-22

    A structural material of a polystyrene base and the reaction product of the polystyrene base and a solid phosphate ceramic is applied as a slurry which includes one or more of a metal oxide or a metal hydroxide with a source of phosphate to produce a phosphate ceramic and a poly (acrylic acid or acrylate) or combinations or salts thereof and polystyrene or MgO applied to the polystyrene base and allowed to cure so that the dried aqueous slurry chemically bonds to the polystyrene base. A method is also disclosed of applying the slurry to the polystyrene base.

  16. Reference Materials

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservation of Fe(II) by Carbon-RichProtonAbout Us HanfordReference Materials Reference

  17. Reference Materials

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservation of Fe(II) by Carbon-RichProtonAbout Us HanfordReference Materials

  18. Summary - Hot Dry Rock R&D Strategies and Applications

    SciTech Connect (OSTI)

    Tennyson, George P..

    1989-03-21

    In geothermal energy technology, the hydrothermal systems rely on volcanic hot rocks being fortuitously co-located with an adequate supply of natural ground water, usually at some considerable depth within the earth. This represents essentially two accidents in the same place, and the occurrence is relatively rare. Yellowstone Park and the desert valley of southern California are the most noteworthy US. examples. Since the heat is the energy needed, if we could just get the water down to it and back. Well, that's what is being done with the hot dry rock program. A well is drilled down to where there is adequate heat in the rocks. The well is then pressurized until the rock fractures creating what amounts to a reservoir full of hot, shattered rock. Finally, a well is drilled into the reservoir and water is pumped in one well, heated by the rock, and taken out through the other well at useful temperatures and pressures. We are getting ready to run significant long-term flow tests at the Fenton Hill Hot Dry Rock site west of Los Alamos, New Mexico. We expect the operational information to provide the data to forecast the energy life of the wells as a production facility. This kind of resource is much more common than regular geothermal resources. Robert H. Hendron described the Long Term Flow Test and reservoir studies for which the project is preparing. A shortfall of available funding has slowed preparations, delaying the start of that test. The test is planning to gather data for more definitive reservoir modeling with energy availability or reservoir lifetime of primary interest. Other interests include geochemistry and tracer studies, microseismic response, water requirements and flow impedance which relates directly to the pumping power required. Progress has been made in modeling studies, chemically reactive tracer techniques, and in improvements in acoustic or microseismic event analysis. Donald W. Brown discussed reservoir modeling as it relates to production management of the HDR well. For wells which are fracture dominated rather than matrix-permeability controlled, a knowledge of the pressure-dependent permeability of the interconnected system of natural joints (or pre-existing fractures is critical to long-term power production from the wells) through optimized pressure management. It was mentioned that a knowledge of the pressure-dependent joint permeability could aid in designing more appropriate secondary recovery strategies in petroleum reservoirs, or reinjection I procedures of geothermal reservoirs. Dr. Bruce A. Robinson discussed the development of fluid flow and transport models for simulation of HDR geothermal reservoirs. These models are also expected to provide accurate predictions of long-term behavior and help in the development of strategies for reservoir improvement and operation. Two approaches were discussed. The discrete fracture approach is based on a random fracture network subject to prescribed statistical properties of the fracture set. It is used to simulate steady state fluid flow and solute transport. The other approach used the continuum approximation. This type of model is appropriate when the reservoir consists of many interconnected fractures, as is the case at Fenton Hill.

  19. Photovoltaic Materials

    SciTech Connect (OSTI)

    Duty, C.; Angelini, J.; Armstrong, B.; Bennett, C.; Evans, B.; Jellison, G. E.; Joshi, P.; List, F.; Paranthaman, P.; Parish, C.; Wereszczak, A.

    2012-10-15

    The goal of the current project was to help make the US solar industry a world leader in the manufacture of thin film photovoltaics. The overall approach was to leverage ORNL’s unique characterization and processing technologies to gain a better understanding of the fundamental challenges for solar cell processing and apply that knowledge to targeted projects with industry members. ORNL has the capabilities in place and the expertise required to understand how basic material properties including defects, impurities, and grain boundaries affect the solar cell performance. ORNL also has unique processing capabilities to optimize the manufacturing process for fabrication of high efficiency and low cost solar cells. ORNL recently established the Center for Advanced Thin-film Systems (CATS), which contains a suite of optical and electrical characterization equipment specifically focused on solar cell research. Under this project, ORNL made these facilities available to industrial partners who were interested in pursuing collaborative research toward the improvement of their product or manufacturing process. Four specific projects were pursued with industrial partners: Global Solar Energy is a solar industry leader in full scale production manufacturing highly-efficient Copper Indium Gallium diSelenide (CIGS) thin film solar material, cells and products. ORNL worked with GSE to develop a scalable, non-vacuum, solution technique to deposit amorphous or nanocrystalline conducting barrier layers on untextured stainless steel substrates for fabricating high efficiency flexible CIGS PV. Ferro Corporation’s Electronic, Color and Glass Materials (“ECGM”) business unit is currently the world’s largest supplier of metallic contact materials in the crystalline solar cell marketplace. Ferro’s ECGM business unit has been the world's leading supplier of thick film metal pastes to the crystalline silicon PV industry for more than 30 years, and has had operational cells and modules in the field for 25 years. Under this project, Ferro leveraged world leading analytical capabilities at ORNL to characterize the paste-to-silicon interface microstructure and develop high efficiency next generation contact pastes. Ampulse Corporation is developing a revolutionary crystalline-silicon (c-Si) thin-film solar photovoltaic (PV) technology. Utilizing uniquely-textured substrates and buffer materials from the Oak Ridge National Laboratory (ORNL), and breakthroughs in Hot-Wire Chemical Vapor Deposition (HW-CVD) techniques in epitaxial silicon developed at the National Renewable Energy Laboratory (NREL), Ampulse is creating a solar technology that is tunable in silicon thickness, and hence in efficiency and economics, to meet the specific requirements of multiple solar PV applications. This project focused on the development of a high rate deposition process to deposit Si, Ge, and Si1-xGex films as an alternate to hot-wire CVD. Mossey Creek Solar is a start-up company with great expertise in the solar field. The primary interest is to create and preserve jobs in the solar sector by developing high-yield, low-cost, high-efficiency solar cells using MSC-patented and -proprietary technologies. The specific goal of this project was to produce large grain formation in thin, net-shape-thickness mc-Si wafers processed with high-purity silicon powder and ORNL's plasma arc lamp melting without introducing impurities that compromise absorption coefficient and carrier lifetime. As part of this project, ORNL also added specific pieces of equipment to enhance our ability to provide unique insight for the solar industry. These capabilities include a moisture barrier measurement system, a combined physical vapor deposition and sputtering system dedicated to cadmium-containing deposits, adeep level transient spectroscopy system useful for identifying defects, an integrating sphere photoluminescence system, and a high-speed ink jet printing system. These tools were combined with others to study the effect of defects on the performance of crystalline silicon and

  20. 2 INVESTIGATION OF CRUDE OIL/BRINE/ROCK INTERACTION 2.1 EXPERIMENTAL STUDY OF CRUDE/BRINE/ROCK INTERACTION AT

    E-Print Network [OSTI]

    Schechter, David S.

    44 2 INVESTIGATION OF CRUDE OIL/BRINE/ROCK INTERACTION 2.1 EXPERIMENTAL STUDY OF CRUDE in this section and expand the understanding of the interactions of the Spraberry reservoir rock, oil and brine used Spraberry oil, synthetic reservoir brine and Spraberry core at reservoir temperature (138o F

  1. Hot dry rock geothermal energy development program. Annual report, fiscal year 1980

    SciTech Connect (OSTI)

    Cremer, G.M.

    1981-07-01

    Investigation and flow testing of the enlarged Phase I heat-extraction system at Fenton Hill continued throughout FY80. Temperature drawdown observed at that time indicated an effective fracture of approximately 40,000 to 60,000 m/sup 2/. In May 1980, hot dry rock (HDR) technology was used to produce electricity in an interface demonstration experiment at Fenton Hill. A 60-kVA binary-cycle electrical generator was installed in the Phase I surface system and heat from about 3 kg/s of geothermal fluid at 132/sup 0/C was used to boil Freon R-114, whose vapor drove a turboalternator. A Phase II system was designed and is now being constructed at Fenton Hill that should approach commercial requirements. Borehole EE-2, the injection well, was completed on May 12, 1980. It was drilled to a vertical depth of about 4500 m, where the rock temperature is approximately 320/sup 0/C. The production well, EE-3 had been drilled to a depth of 3044 m and drilling was continuing. Environmental monitoring of Fenton Hill site continued. Development of equipment, instruments, and materials for technical support at Fenton Hill continued during FY80. Several kinds of models were also developed to understand the behavior of the Phase I system and to develop a predictive capability for future systems. Data from extensive resource investigations were collected, analyzed, and assembled into a geothermal gradient map of the US, and studies were completed on five specific areas as possible locations for HDR Experimental Site 2.

  2. Geomechanical Simulation of CO{sub 2} Leakage and Cap Rock Remediation

    SciTech Connect (OSTI)

    Nygaard, Runar; Bai, Baojun; Eckert, Andreas

    2012-09-30

    CO{sub 2} sequestration into porous and permeable brine filled aquifers is seen as one of the most likely near-term solutions for reducing greenhouse gases. Safely storing injected CO{sub 2}, which is less dense than water, requires trapping the CO{sub 2} under an impermeable rock which would act as a seal. One of the concerns with CO{sub 2} sequestration is the generation of new fractures or reactivation of existing fractures and faults caused by CO{sub 2} injection into the sealing formation. Mitigation strategies must be developed to remediate potentially leaking faults or fractures. This project evaluated potential storage scenarios in the state of Missouri and developed coupled reservoir and geomechanic simulations to identify storage potential and leakage risks. Further, several injectable materials used to seal discontinuities were evaluated under subsurface conditions. The four sealant materials investigated were paraffin wax, silica based gel, polymer based gel, and micro-cement, which all significantly reduced the fracture permeability. However, the micro-cement was the most effective sealing agent and the only sealant able to withstand the large differential pressure caused by CO{sub 2} or brine injection and create a strong seal to prevent further fracturing.

  3. Materials Science & Engineering

    E-Print Network [OSTI]

    Materials Science & Engineering The development of new high-performance materials for energy Use of Advanced Characterization Techniques for Materials Development in Energy and Transportation and composition of materials at higher spatial resolution, with greater efficiency, and on real materials

  4. Critical Materials Institute

    ScienceCinema (OSTI)

    Alex King

    2013-06-05

    Ames Laboratory Director Alex King talks about the goals of the Critical Materials Institute in diversifying the supply of critical materials, developing substitute materials, developing tools and techniques for recycling critical materials, and forecasting materials needs to avoid future shortages.

  5. Earth melter and method of disposing of feed materials

    DOE Patents [OSTI]

    Chapman, C.C.

    1994-10-11

    An apparatus, and method of operating the apparatus is described, wherein a feed material is converted into a glassified condition for subsequent use or disposal. The apparatus is particularly useful for disposal of hazardous or noxious waste materials which are otherwise either difficult or expensive to dispose of. The apparatus is preferably constructed by excavating a melt zone in a quantity of soil or rock, and lining the melt zone with a back fill material if refractory properties are needed. The feed material is fed into the melt zone and, preferably, combusted to an ash, whereupon the heat of combustion is used to melt the ash to a molten condition. Electrodes may be used to maintain the molten feed material in a molten condition, and to maintain homogeneity of the molten materials. 3 figs.

  6. Earth melter and method of disposing of feed materials

    DOE Patents [OSTI]

    Chapman, Christopher C. (Richland, WA)

    1994-01-01

    An apparatus, and method of operating the apparatus, wherein a feed material is converted into a glassified condition for subsequent use or disposal. The apparatus is particularly useful for disposal of hazardous or noxious waste materials which are otherwise either difficult or expensive to dispose of. The apparatus is preferably constructed by excavating a melt zone in a quantity of soil or rock, and lining the melt zone with a back fill material if refractory properties are needed. The feed material is fed into the melt zone and, preferably, combusted to an ash, whereupon the heat of combustion is used to melt the ash to a molten condition. Electrodes may be used to maintain the molten feed material in a molten condition, and to maintain homogeneity of the molten materials.

  7. Source rock screening studies of Ordovician Maquoketa shale in western Illinois

    SciTech Connect (OSTI)

    Autrey, A.; Crockett, J.E.; Dickerson, D.R.; Oltz, D.F.; Seyler, B.J.; Warren, R.

    1987-09-01

    Rock-Eval (pyrolysis) studies of Ordovician Maquoketa Shale samples (cuttings and cores) from the shallow subsurface (500-800 ft deep) in western Illinois indicate that facies within the Maquoketa have potential as hydrocarbon source rocks. Dark, presumably organic-rich zones within the Maquoketa Shale were selected and analyzed for total organic carbon (TOC), Rock-Eval (pyrolysis), and bulk and clay mineralogy using x-ray diffraction. Preliminary results from six samples from Schuyler, McDonough, and Fulton Counties show TOC values ranging from 4.70% to as high as 12.90%. Rock-Eval parameters, measured by heating organic matter in an inert atmosphere, indicate source rock maturity and petroleum-generative potential. Screening studies, using the Rock-Eval process, describe very good source rock potential in facies of the Maquoketa Shale. Further studies at the Illinois State Geological Survey will expand on these preliminary results. This study complements a proposed exploration model in western Illinois and further suggests the possibility of source rocks on the flanks of the Illinois basin. Long-distance migration from more deeply buried effective source rocks in southern Illinois has been the traditional mechanism proposed for petroleum in basin-flank reservoirs. Localized source rocks can be an alternative to long-distance migration, and can expand the possibilities of basin-flank reservoirs, encouraging further exploration in these areas.

  8. HAZARDOUS MATERIALS INCIDENTS What are hazardous materials?

    E-Print Network [OSTI]

    Fernandez, Eduardo

    HAZARDOUS MATERIALS INCIDENTS What are hazardous materials? Hazardous materials are chemicals, accidentally spilled, or released. In addition to laboratory chemicals, hazardous materials may include common not involve highly toxic or noxious hazardous materials, a fire, or an injury requiring medical attention

  9. HAZARDOUS MATERIALS INCIDENTS What are hazardous materials?

    E-Print Network [OSTI]

    Fernandez, Eduardo

    HAZARDOUS MATERIALS INCIDENTS What are hazardous materials? Hazardous materials are chemicals I do if there is a small spill in the area and personnel trained in Hazardous Material clean up, or there is a small spill where personnel trained in Hazardous Material clean up or an appropriate spill kit

  10. HAZARDOUS MATERIALS INCIDENTS What are hazardous materials?

    E-Print Network [OSTI]

    Fernandez, Eduardo

    HAZARDOUS MATERIALS INCIDENTS What are hazardous materials? Hazardous materials are chemicals I do if there is a small spill in the area and personnel trained in Hazardous Material clean up spill where personnel trained in Hazardous Material clean up or an appropriate spill kit

  11. HAZARDOUS MATERIALS INCIDENTS What are hazardous materials?

    E-Print Network [OSTI]

    Fernandez, Eduardo

    HAZARDOUS MATERIALS INCIDENTS What are hazardous materials? Hazardous materials are chemicals I do if there is a small spill in the area and personnel trained in Hazardous Material clean up personnel trained in Hazardous Material clean up or an appropriate spill kit is not available? Call 561

  12. Reactor Vessel Removal: Improving Performance Big Rock Point Lessons Learned

    SciTech Connect (OSTI)

    Daly, P.T. [BNG America, D and D Operations, 804 South Illinois Avenue, Oak Ridge, TN 37830 (United States)

    2006-07-01

    The Big Rock Point (BRP) reactor vessel was successfully removed, packaged in a Type B shipping container, transported, and buried. The process took almost 4 years of work by many people and a variety of companies. This paper will discuss several areas that can reduce schedule time, resulting in reduced cost and employee dose exposure. For maximum cost effectiveness, these lessons should be applied during the planning stages when developing baseline cost and schedule, As Low As Reasonably Achievable (ALARA) budgets, and work processes. (authors)

  13. Simulation of water transport in heated rock salt

    SciTech Connect (OSTI)

    Schlich, M.; Jockwer, N.

    1986-01-01

    This paper summarizes computer simulation studies on water transport in German rock salt. Based on JOCKWERS experimental investigations on water content and water liberation, the object of these studies was to select a water transport model, that matches the water inflow which was measured in some heater experiments in the Asse Salt Mine. The main result is, that an evaporation front model, with Knudsen-type vapor transport combined with fluid transport by thermal expansion of the adsorbed water layers in the non evaporated zone, showed the best agreement with experimental evidence.

  14. SEISMIC AND ROCK PHYSICS DIAGNOSTICS OF MULTISCALE RESERVOIR TEXTURES

    SciTech Connect (OSTI)

    Gary Mavko

    2002-05-01

    As part of our study on ''Relationships between seismic properties and rock microstructure'', we have studied (1) How to quantify elastic properties of clay minerals using Atomic Force Acoustic Microscopy. We show how bulk modulus of clay can be measured using atomic force acoustic microscopy (AFAM) (2) We have successfully measured elastic properties of unconsolidated sediments in an effort to quantify attributes for detection of overpressures from seismic (3) We have initiated efforts for velocity upscaling to quantify long-wavelength and short-wavelength velocity behavior and the scale-dependent dispersion caused by sediment variability in different depositional environments.

  15. DOE - Office of Legacy Management -- Rock Island Arsenal - IL 09

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal Gas &SCE-SessionsSouth DakotaRobbins and Myers Co - OH 51 FUSRAP Considered SitesRock

  16. DOE - Office of Legacy Management -- WNI Split Rock Site - 043

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal Gas &SCE-SessionsSouth DakotaRobbins and Myers Co -VA 03 VirginiaVapofierSplit Rock

  17. HotRock GmbH | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History View NewTexas: Energy Resources JumpNew Jersey:Hopkinsville, Kentucky:OpenHotOpen EnergyHotRock

  18. McKees Rocks, Pennsylvania: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History ViewMayo, Maryland: Energy Resources Jump to: navigation,McDonoughNorth Dakota:McKees Rocks,

  19. North Little Rock, Arkansas: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History ViewMayo, Maryland:NPI VenturesNew Hampshire:source History ViewLittle Rock, Arkansas: Energy

  20. EA-225 Split Rock Energy LLC | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergy A plug-inPPL EnergyPlus, LLC to export electric energy toNRG PowerSplit Rock Energy

  1. Roth Rock Wind Power Project | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION JEnvironmental Jump to:EA EIS Report UrlNM-bRenewable Energy|Gas andRofinRoscoeRosneft JumpRothRock

  2. Alum Rock, California: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION JEnvironmental Jump to:EAand DaltonSolarOpen5All HomeAlphakatResources |Altus AG JumpRock,

  3. Category:Rock Lab Analysis | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION JEnvironmentalBowerbank,CammackFLIR Jump to:RAPID Roadmap ContactRock Density Jump to:

  4. Property:CapRockAge | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIXsourceIIInformationEnergyReportNumber Jump to: navigation, searchCapRockAge Jump to:

  5. Property:CapRockLithology | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIXsourceIIInformationEnergyReportNumber Jump to: navigation, searchCapRockAge Jump

  6. Gas storage materials, including hydrogen storage materials

    DOE Patents [OSTI]

    Mohtadi, Rana F; Wicks, George G; Heung, Leung K; Nakamura, Kenji

    2014-11-25

    A material for the storage and release of gases comprises a plurality of hollow elements, each hollow element comprising a porous wall enclosing an interior cavity, the interior cavity including structures of a solid-state storage material. In particular examples, the storage material is a hydrogen storage material, such as a solid state hydride. An improved method for forming such materials includes the solution diffusion of a storage material solution through a porous wall of a hollow element into an interior cavity.

  7. Gas storage materials, including hydrogen storage materials

    DOE Patents [OSTI]

    Mohtadi, Rana F; Wicks, George G; Heung, Leung K; Nakamura, Kenji

    2013-02-19

    A material for the storage and release of gases comprises a plurality of hollow elements, each hollow element comprising a porous wall enclosing an interior cavity, the interior cavity including structures of a solid-state storage material. In particular examples, the storage material is a hydrogen storage material such as a solid state hydride. An improved method for forming such materials includes the solution diffusion of a storage material solution through a porous wall of a hollow element into an interior cavity.

  8. Composite materials for thermal energy storage

    DOE Patents [OSTI]

    Benson, David K. (Golden, CO); Burrows, Richard W. (Conifer, CO); Shinton, Yvonne D. (Northglenn, CO)

    1986-01-01

    The present invention discloses composite material for thermal energy storage based upon polyhydric alcohols, such as pentaerythritol, trimethylol ethane (also known as pentaglycerine), neopentyl glycol and related compounds including trimethylol propane, monoaminopentaerythritol, diamino-pentaerythritol and tris(hydroxymethyl)acetic acid, separately or in combinations, which provide reversible heat storage through crystalline phase transformations. These phase change materials do not become liquid during use and are in contact with at least one material selected from the group consisting of metals, carbon siliceous, plastic, cellulosic, natural fiber, artificial fiber, concrete, gypsum, porous rock, and mixtures thereof. Particulate additions, such as aluminum or graphite powders, as well as metal and carbon fibers can also be incorporated therein. Particulate and/or fibrous additions can be introduced into molten phase change materials which can then be cast into various shapes. After the phase change materials have solidified, the additions will remain dispersed throughout the matrix of the cast solid. The polyol is in contact with at least one material selected from the group consisting of metals, carbon siliceous, plastic, cellulosic, natural fiber, artificial fiber, concrete, gypsum, and mixtures thereof.

  9. Materials Science & Tech Division | Advanced Materials | ORNL

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    applied materials science and technology. One key component of the division is a strong Basic Energy Sciences (BES) portfolio that pushes the frontiers of materials theory,...

  10. Method and apparatus for determining two-phase flow in rock fracture

    DOE Patents [OSTI]

    Persoff, Peter (Oakland, CA); Pruess, Karsten (Berkeley, CA); Myer, Larry (Benicia, CA)

    1994-01-01

    An improved method and apparatus as disclosed for measuring the permeability of multiple phases through a rock fracture. The improvement in the method comprises delivering the respective phases through manifolds to uniformly deliver and collect the respective phases to and from opposite edges of the rock fracture in a distributed manner across the edge of the fracture. The improved apparatus comprises first and second manifolds comprising bores extending within porous blocks parallel to the rock fracture for distributing and collecting the wetting phase to and from surfaces of the porous blocks, which respectively face the opposite edges of the rock fracture. The improved apparatus further comprises other manifolds in the form of plenums located adjacent the respective porous blocks for uniform delivery of the non-wetting phase to parallel grooves disposed on the respective surfaces of the porous blocks facing the opposite edges of the rock fracture and generally perpendicular to the rock fracture.

  11. Micromachined low frequency rocking accelerometer with capacitive pickoff

    DOE Patents [OSTI]

    Lee, Abraham P. (Arlington, VA); Simon, Jonathon N. (San Leandro, CA); McConaghy, Charles F. (Livermore, CA)

    2001-01-01

    A micro electro mechanical sensor that uses capacitive readout electronics. The sensor involves a micromachined low frequency rocking accelerometer with capacitive pickoff fabricated by deep reactive ion etching. The accelerometer includes a central silicon proof mass, is suspended by a thin polysilicon tether, and has a moving electrode (capacitor plate or interdigitated fingers) located at each end the proof mass. During movement (acceleration), the tethered mass moves relative to the surrounding packaging, for example, and this defection is measured capacitively by a plate capacitor or interdigitated finger capacitor, having the cooperating fixed electrode (capacitor plate or interdigitated fingers) positioned on the packaging, for example. The micromachined rocking accelerometer has a low frequency (<500 Hz), high sensitivity (.mu.G), with minimal power usage. The capacitors are connected to a power supply (battery) and to sensor interface electronics, which may include an analog to digital (A/D) converter, logic, RF communication link, antenna, etc. The sensor (accelerometer) may be, for example, packaged along with the interface electronics and a communication system in a 2".times.2".times.2" cube. The proof mass may be asymmetric or symmetric. Additional actuating capacitive plates may be used for feedback control which gives a greater dynamic range.

  12. Design methodology for rock excavations at the Yucca Mountain project

    SciTech Connect (OSTI)

    Alber, M.; Bieniawski, Z.T.

    1993-12-31

    The problems involved in the design of the proposed underground repository for high-level nuclear waste call for novel design approaches. Guidelines for the design are given by the Mission Plan Amendment in which licensing and regulatory aspects have to be satisfied. Moreover, systems engineering was proposed, advocating a top-down approach leading to the identification of discrete, implementable system elements. These objectives for the design process can be integrated in an engineering design methodology. While design methodologies for some engineering disciplines are available, they were of limited use for rock engineering because of the inherent uncertainties about the geologic media. Based on the axiomatic design approach of Suh, Bieniawski developed a methodology for design in rock. Design principles and design stages are clearly stated to assist in effective decision making. For overall performance goals, the domain of objectives is defined through components (DCs) - representing a design solution - satisfy the FRs, resulting in discrete, independent functional relations. Implementation is satisfied by evaluation and optimization of the design with respect to the constructibility of the design components.

  13. Fluid-Rock Characterization and Interactions in NMR Well Logging

    SciTech Connect (OSTI)

    George J. Hirasaki; Kishore K. Mohanty

    2005-09-05

    The objective of this report is to characterize the fluid properties and fluid-rock interactions that are needed for formation evaluation by NMR well logging. The advances made in the understanding of NMR fluid properties are summarized in a chapter written for an AAPG book on NMR well logging. This includes live oils, viscous oils, natural gas mixtures, and the relation between relaxation time and diffusivity. Oil based drilling fluids can have an adverse effect on NMR well logging if it alters the wettability of the formation. The effect of various surfactants on wettability and surface relaxivity are evaluated for silica sand. The relation between the relaxation time and diffusivity distinguishes the response of brine, oil, and gas in a NMR well log. A new NMR pulse sequence in the presence of a field gradient and a new inversion technique enables the T{sub 2} and diffusivity distributions to be displayed as a two-dimensional map. The objectives of pore morphology and rock characterization are to identify vug connectivity by using X-ray CT scan, and to improve NMR permeability correlation. Improved estimation of permeability from NMR response is possible by using estimated tortuosity as a parameter to interpolate between two existing permeability models.

  14. ChemCam Rock Laser for the Mars Science Laboratory

    ScienceCinema (OSTI)

    LANL

    2009-09-01

    Los Alamos has a long history of space-related instr... Los Alamos has a long history of space-related instruments, tied primarily to its role in defense-related treaty verification. Space-based detectors have helped determine the differences between signals from lightning bolts and potential nuclear explosions. LANL-developed gamma-ray detection instruments first revealed the existence of what we now know as gamma-ray bursts, an exciting area of astrophysical research. And the use of LANL instruments on varied space missions continues with such products as the ChemCam rock laser for NASA, shown here. The Engineering Model of the ChemCam Mars Science Laboratory rover instrument arrived at NASA's Jet Propulsion Laboratory on February 6, 2008. ChemCam will use imaging and laser-induced breakdown spectroscopy (LIBS) to determine rock and soil compositions on Mars, up to 9 meters from the rover. The engineering model is being integrated into the rover test bed for the development and testing of the rover software. The actual flight model components are concurrently being assembled at Los Alamos and in Toulouse, France, and will be delivered to JPL in July. The Mars Science Laboratory is scheduled to launch in 2009. Animations courtesy of JPL/NASA.

  15. ChemCam rock laser for Mars Science Laboratory "Curiosity"

    ScienceCinema (OSTI)

    Wiens, Roger

    2014-08-12

    Los Alamos has a long history of space-related instruments, tied primarily to its role in defense-related treaty verification. Space-based detectors have helped determine the differences between signals from lightning bolts and potential nuclear explosions. LANL-developed gamma-ray detection instruments first revealed the existence of what we now know as gamma-ray bursts, an exciting area of astrophysical research. And the use of LANL instruments on varied space missions continues with such products as the ChemCam rock laser for NASA, shown here. The Engineering Model of the ChemCam Mars Science Laboratory rover instrument arrived at NASA's Jet Propulsion Laboratory on February 6, 2008. The Flight Model was shipped in August, 2010 for installation on the rover at JPL. ChemCam will use imaging and laser-induced breakdown spectroscopy (LIBS) to determine rock and soil compositions on Mars, up to 9 meters from the rover. The engineering model is being integrated into the rover test bed for the development and testing of the rover software. The actual flight model components were concurrently assembled at Los Alamos and in Toulouse, France. The Mars Science Laboratory is scheduled to launch in 2011. Animations courtesy of JPL/NASA.

  16. Fluid-Rock Characterization and Interactions in NMR Well Logging

    SciTech Connect (OSTI)

    Hirasaki, George J.; Mohanty, Kishore, K.

    2001-07-13

    The objective of this project is to characterize the fluid properties and fluid-rock interactions that are needed for formation evaluation by NMR well logging. This is the first annual progress report submitted to the DOE. It reports on the work completed during the reporting period even if it may have started before this period. This project is a partnership between Professor George J. Hirasaki at Rice University and Professor Kishore Mohanty at University of Houston. In addition to the DOE, this project is supported by a consortium of oil companies and service companies. The fluid properties characterization has emphasized the departure of live oils from correlations based on dead oils. Also, asphaltic components can result in a difference between the T1 and T2 relaxation time distributions as well as reduce the hydrogen index. The fluid rock characterizations that are reported here are the effects of wettability and internal magnetic field gradients. A pore reconstruction method ha s been developed to recreate three-dimensional porous media from two-dimensional images that reproduce some of their key statistical properties. A Monte Carlo simulation technique has been developed to calculate the magnetization decay in fluid saturated porous media given their pore structure.

  17. Advanced Materials Manufacturing | ORNL

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Advanced Materials Manufacturing New materials drive the development of innovative products. Building upon a rich history in materials science, ORNL is discovering and developing...

  18. Materials Project: A Materials Genome Approach

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Ceder, Gerbrand [MIT; Persson, Kristin [LBNL

    Technological innovation - faster computers, more efficient solar cells, more compact energy storage - is often enabled by materials advances. Yet, it takes an average of 18 years to move new materials discoveries from lab to market. This is largely because materials designers operate with very little information and must painstakingly tweak new materials in the lab. Computational materials science is now powerful enough that it can predict many properties of materials before those materials are ever synthesized in the lab. By scaling materials computations over supercomputing clusters, this project has computed some properties of over 80,000 materials and screened 25,000 of these for Li-ion batteries. The computations predicted several new battery materials which were made and tested in the lab and are now being patented. By computing properties of all known materials, the Materials Project aims to remove guesswork from materials design in a variety of applications. Experimental research can be targeted to the most promising compounds from computational data sets. Researchers will be able to data-mine scientific trends in materials properties. By providing materials researchers with the information they need to design better, the Materials Project aims to accelerate innovation in materials research.[copied from http://materialsproject.org/about] You will be asked to register to be granted free, full access.

  19. Pore-Scale Simulation Of Experimentally Realizable, Oscillatory Flow In Porous Rock

    E-Print Network [OSTI]

    Olson, John F.

    1999-01-01

    We report new simulations of oscillating flow in porous rock. Our goal is to better understand the frequency dependence of pore-scale fluid motion, which should ultimately

  20. Simulation of water-rock interaction in the yellowstone geothermal system using TOUGHREACT

    E-Print Network [OSTI]

    Dobson, P.F.; Salah, S.; Spycher, N.; Sonnenthal, E.

    2003-01-01

    fluid flow in the Yellowstone geothermal system, Wyoming,ROCK INTERACTION IN THE YELLOWSTONE GEOTHERMAL SYSTEM USINGGeyser Basin of the Yellowstone geothermal system, has been

  1. A Sr-Isotopic Comparison Between Thermal Waters, Rocks, And Hydrotherm...

    Open Energy Info (EERE)

    Caldera, California Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: A Sr-Isotopic Comparison Between Thermal Waters, Rocks, And Hydrothermal...

  2. Chemical and petrological characteristics of the intrusive rocks of the Quitman Mountains, Texas 

    E-Print Network [OSTI]

    Seay, Christopher Sidney

    1973-01-01

    ) on stained rock slabs. The procedure of staining by sodium cobalti-nitrate and amaranth dye (Laniz and others, 1964) proved to be ideal for these medium- and coarse-grained rocks. 14 Before modal analysis was made, the rock was ' examined in thin... activation methods. For X-ray spectrographic analyses the stan- dards used were USGS Rock Standards W-l, G-2, and GSP-1, supplemented by National Bureau of Stan- dard's Mineral 70a (potassium feldspar) and Min- eral 99a (sodium feldspar) (Appendix 1...

  3. Summary of Rock-Property Measurements for Hong Kong TuffSamples

    SciTech Connect (OSTI)

    Dobson, Patrick F.; Nakagawa, Seiji

    2005-09-21

    A series of rock-property measurements was performed on a suite of rhyolitic tuff samples from the area above the Aberdeen Tunnel of Hong Kong. The goal of this study was to determine the mechanical properties of these samples after weathering. This report contains petrographic descriptions, porosity, bulk and grain density, as well as ultrasonic measurements, elastic modulii calculations, and rock-strength determinations. Variations in rock properties are related to alteration and the presence of fractures in the tuff. Granitic rocks located adjacent to the altered tuffs would be better candidates for underground excavations.

  4. A Coupled Model for Natural Convection and Condensation in Heated Subsurface Enclosures Embedded in Fractured Rock

    E-Print Network [OSTI]

    Halecky, N.; Birkholzer, J.T.; Webb, S.W.; Peterson, P.F.; Bodvarsson, G.S.

    2006-01-01

    and Mass Transfer in Yucca Mountain Drifts,” Proceedings ofMD- 000001 REV 00, Yucca Mountain Project Report, Bechtelthe fractured rock at Yucca Mountain have been investigated

  5. Rock-Water Interactions in the Fenton Hill, New Mexico, Hot Dry...

    Open Energy Info (EERE)

    Rock Geothermal Systems II. Modeling Geochemical Behavior Abstract A transient mass balance model is developed to account for the dynamic behavior of an artificially stimulated...

  6. Bibliography of the geological and geophysical aspects of hot dry rock geothermal resources

    SciTech Connect (OSTI)

    Heiken, G.; Sayer, S.

    1980-02-01

    This is the first issue of an annual compilation of references that are useful to the exploration, understanding and development of the hot dry rock geothermal resource.

  7. GEOTECHNICAL ASSESSMENT AND INSTRUMENTATION NEEDS FOR NUCLEAR WASTE ISOLATION IN CRYSTALLINE AND ARGILLACEOUS ROCKS SYMPOSIUM

    E-Print Network [OSTI]

    Authors, Various

    2011-01-01

    Interactions between nuclear waste and surrounding rock.AND INSTRUMENTATION NEEDS FOR NUCLEAR WASTE ISOLATION INwill provide Office of Nuclear Waste Isolation and the

  8. Paradox of Peroxy Defects and Positive Holes in Rocks Part II: Outflow of Electric Currents from Stressed Rocks

    E-Print Network [OSTI]

    Scoville, John; Freund, Friedemann

    2015-01-01

    Understanding the electrical properties of rocks is of fundamental interest. We report on currents generated when stresses are applied. Loading the center of gabbro tiles, 30x30x0.9 cm$^3$, across a 5 cm diameter piston, leads to positive currents flowing from the center to the unstressed edges. Changing the constant rate of loading over 5 orders of magnitude from 0.2 kPa/s to 20 MPa/s produces positive currents, which start to flow already at low stress levels, <5 MPa. The currents increase as long as stresses increase. At constant load they flow for hours, days, even weeks and months, slowly decreasing with time. When stresses are removed, they rapidly disappear but can be made to reappear upon reloading. These currents are consistent with the stress-activation of peroxy defects, such as O$_3$Si-OO-SiO$_3$, in the matrix of rock-forming minerals. The peroxy break-up leads to positive holes h$^{\\bullet}$, i.e. electronic states associated with O$^-$ in a matrix of O$^{2-}$, plus electrons, e'. Propagating...

  9. Advanced Materials | ORNL

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Specific Binding ORNL discovery holds potential for separations, sensors, batteries, biotech and more Home | Science & Discovery | Advanced Materials Advanced Materials |...

  10. Composite material dosimeters

    DOE Patents [OSTI]

    Miller, Steven D. (Richland, WA)

    1996-01-01

    The present invention is a composite material containing a mix of dosimeter material powder and a polymer powder wherein the polymer is transparent to the photon emission of the dosimeter material powder. By mixing dosimeter material powder with polymer powder, less dosimeter material is needed compared to a monolithic dosimeter material chip. Interrogation is done with excitation by visible light.

  11. Yield criteria for quasibrittle and frictional materials

    E-Print Network [OSTI]

    Davide Bigoni; Andrea Piccolroaz

    2010-10-09

    A new yield/damage function is proposed for modelling the inelastic behaviour of a broad class of pressure-sensitive, frictional, ductile and brittle-cohesive materials. The yield function allows the possibility of describing a transition between the shape of a yield surface typical of a class of materials to that typical of another class of materals. This is a fundamental key to model the behaviour of materials which become cohesive during hardening (so that the shape of the yield surface evolves from that typical of a granular material to that typical of a dense material), or which decrease cohesion due to damage accumulation. The proposed yield function is shown to agree with a variety of experimental data relative to soil, concrete, rock, metallic and composite powders, metallic foams, porous metals, and polymers. The yield function represents a single, convex and smooth surface in stress space approaching as limit situations well-known criteria and the extreme limits of convexity in the deviatoric plane. The yield function is therefore a generalization of several criteria, including von Mises, Drucker-Prager, Tresca, modified Tresca, Coulomb-Mohr, modified Cam-clay, and --concerning the deviatoric section-- Rankine and Ottosen. Convexity of the function is proved by developing two general propositions relating convexity of the yield surface to convexity of the corresponding function. These propositions are general and therefore may be employed to generate other convex yield functions.

  12. Composite materials for thermal energy storage

    DOE Patents [OSTI]

    Benson, D.K.; Burrows, R.W.; Shinton, Y.D.

    1985-01-04

    A composite material for thermal energy storage based upon polyhydric alcohols, such as pentaerythritol, trimethylol ethane (also known as pentaglycerine), neopentyl glycol and related compounds including trimethylol propane, monoaminopentaerythritol, diamino-pentaerythritol and tris(hydroxymethyl)acetic acid, separately or in combinations, which provide reversible heat storage through crystalline phase transformations. These PCM's do not become liquid during use and are in contact with at least one material selected from the group consisting of metals, carbon, siliceous, plastic, cellulosic, natural fiber, artificial fiber, concrete, gypsum, porous rock, and mixtures thereof. Particulate additions such as aluminum or graphite powders, as well as metal and carbon fibers can also be incorporated therein. Particulate and/or fibrous additions can be introduced into molten phase change materials which can then be cast into various shapes. After the phase change materials have solidified, the additions will remain dispersed throughout the matrix of the cast solid. The polyol is in contact with at least one material selected from the group consisting of metals, carbon, siliceous, plastic, cellulosic, natural fiber, artificial fiber, concrete, gypsum, and mixtures thereof.

  13. Dynamic fracture of granular material under quasi-static loading Amir Sagy,1,2

    E-Print Network [OSTI]

    Fineberg, Jay

    Dynamic fracture of granular material under quasi-static loading Amir Sagy,1,2 Gil Cohen,3 Ze; published 13 April 2006. [1] The dynamics of rapid fracturing of heterogeneous grainy media are studied in laboratory experiments in which artificial rock slabs are fractured under uniaxial tension. By performing

  14. Method for forming materials

    DOE Patents [OSTI]

    Tolle, Charles R. (Idaho Falls, ID); Clark, Denis E. (Idaho Falls, ID); Smartt, Herschel B. (Idaho Falls, ID); Miller, Karen S. (Idaho Falls, ID)

    2009-10-06

    A material-forming tool and a method for forming a material are described including a shank portion; a shoulder portion that releasably engages the shank portion; a pin that releasably engages the shoulder portion, wherein the pin defines a passageway; and a source of a material coupled in material flowing relation relative to the pin and wherein the material-forming tool is utilized in methodology that includes providing a first material; providing a second material, and placing the second material into contact with the first material; and locally plastically deforming the first material with the material-forming tool so as mix the first material and second material together to form a resulting material having characteristics different from the respective first and second materials.

  15. Biogenicity and Syngeneity of Organic Matter in Ancient Sedimentary Rocks: Recent Advances in the Search for Evidence of Past Life

    SciTech Connect (OSTI)

    Oehler, Dorothy Z.; Cady, Sherry L.

    2014-12-01

    he past decade has seen an explosion of new technologies for assessment of biogenicity and syngeneity of carbonaceous material within sedimentary rocks. Advances have been made in techniques for analysis of in situ organic matter as well as for extracted bulk samples of soluble and insoluble (kerogen) organic fractions. The in situ techniques allow analysis of micrometer-to-sub-micrometer-scale organic residues within their host rocks and include Raman and fluorescence spectroscopy/imagery, confocal laser scanning microscopy, and forms of secondary ion/laser-based mass spectrometry, analytical transmission electron microscopy, and X-ray absorption microscopy/spectroscopy. Analyses can be made for chemical, molecular, and isotopic composition coupled with assessment of spatial relationships to surrounding minerals, veins, and fractures. The bulk analyses include improved methods for minimizing contamination and recognizing syngenetic constituents of soluble organic fractions as well as enhanced spectroscopic and pyrolytic techniques for unlocking syngenetic molecular signatures in kerogen. Together, these technologies provide vital tools for the study of some of the oldest and problematic carbonaceous residues and for advancing our understanding of the earliest stages of biological evolution on Earth and the search for evidence of life beyond Earth. We discuss each of these new technologies, emphasizing their advantages and disadvantages, applications, and likely future directions.

  16. Hydrologic test system for fracture flow studies in crystalline rock

    SciTech Connect (OSTI)

    Raber, E; Lord, D.; Burklund, P.

    1982-05-05

    A hydrologic test system has been designed to measure the intrinsic permeabilities of individual fractures in crystalline rock. This system is used to conduct constant pressure-declining flow rate and pressure pulse hydraulic tests. The system is composed of four distinct units: (1) the Packer System, (2) Injection system, (3) Collection System, and (4) Electronic Data Acquisition System. The apparatus is built in modules so it can be easily transported and re-assembled. It is also designed to operate over a wide range of pressures (0 to 300 psig) and flow rates (0.2 to 1.0 gal/min). This system has proved extremely effective and versatile in its use at the Climax Facility, Nevada Test Site.

  17. Constitutive Theory for Velocity Dispersion in Rock with Dual Porosity

    SciTech Connect (OSTI)

    Wang, H F; Berryman, J G

    2002-03-28

    The high frequency behavior of the bulk modulus of fluid-saturated rock can be obtained from a double-porosity constitutive model, which is a direct conceptual extension of Biot's (1941) constitutive equations and which provides additional stiffening due to unrelaxed induced pore pressures in the soft porosity phase. Modeling the stiffening of the shear modulus at high frequency requires an effective medium average over the unequal induced pore pressures in cracks of different orientations. The implicit assumptions are that pore fluid equilibration does not occur between cracks of different orientations and between cracks and porous matrix. The correspondence between the constitutive equations of Berryman and Wang (1995) and Mavko and Jizba (1991) is explicitly noted.

  18. Predicting stress-induced velocity anisotropy in rocks

    SciTech Connect (OSTI)

    Mavko, G.; Mukerji, T.; Godfrey, N. [Stanford Univ., CA (United States). Rock Physics Lab.] [Stanford Univ., CA (United States). Rock Physics Lab.

    1995-07-01

    A simple transformation, using measured isotropic V{sub P} and V{sub S} versus hydrostatic pressure, is presented for predicting stress-induced seismic velocity anisotropy in rocks. The compliant, crack-like portions of the pore space are characterized by generalized compressional and shear compliances that are estimated form the isotropic V{sub P} and V{sub S}. The physical assumption that the compliant porosity is crack-like means that the pressure dependence of the generalized compliances is governed primarily by normal tractions resolved across cracks and defects. This allows the measured pressure dependence to be mapped form the hydrostatic stress state to any applied nonhydrostatic stress. Predicted P- and S-wave velocities agree reasonably well with uniaxial stress data for Barre Granite and Massillon Sandstone. While it is mechanically similar to methods based on idealized ellipsoidal cracks, the approach is relatively independent of any assumed crack geometry and is not limited to small crack densities.

  19. Seismic-Scale Rock Physics of Methane Hydrate

    SciTech Connect (OSTI)

    Amos Nur

    2009-01-08

    We quantify natural methane hydrate reservoirs by generating synthetic seismic traces and comparing them to real seismic data: if the synthetic matches the observed data, then the reservoir properties and conditions used in synthetic modeling might be the same as the actual, in-situ reservoir conditions. This approach is model-based: it uses rock physics equations that link the porosity and mineralogy of the host sediment, pressure, and hydrate saturation, and the resulting elastic-wave velocity and density. One result of such seismic forward modeling is a catalogue of seismic reflections of methane hydrate which can serve as a field guide to hydrate identification from real seismic data. We verify this approach using field data from known hydrate deposits.

  20. Sedimentary basin geochemistry and fluid/rock interactions workshop

    SciTech Connect (OSTI)

    NONE

    1991-12-31

    Fundamental research related to organic geochemistry, fluid-rock interactions, and the processes by which fluids migrate through basins has long been a part of the U.S. Department of Energy Geosciences program. Objectives of this program were to emphasize those principles and processes which would be applicable to a wide range of problems associated with petroleum discovery, occurrence and extraction, waste disposal of all kinds, and environmental management. To gain a better understanding of the progress being made in understanding basinal fluids, their geochemistry and movement, and related research, and to enhance communication and interaction between principal investigators and DOE and other Federal program managers interested in this topic, this workshop was organized by the School of Geology and Geophysics and held in Norman, Oklahoma in November, 1991.

  1. Saturated Zone Plumes in Volcanic Rock: Implications for Yucca Mountain

    SciTech Connect (OSTI)

    S. Kelkar; R. Roback; B. Robinson; G. Srinivasan; C. Jones; P. Reimus

    2006-02-14

    This paper presents a literature survey of the occurrences of radionuclide plumes in saturated, fractured rocks. Three sites, Idaho National laboratory, Hanford, and Oak Ridge are discussed in detail. Results of a modeling study are also presented showing that the length to width ratio of a plume starting within the repository footprint at the Yucca Mountain Project site, decreases from about 20:1 for the base case to about 4:1 for a higher value of transverse dispersivity, indicating enhanced lateral spreading of the plume. Due to the definition of regulatory requirements, this lateral spreading does not directly impact breakthrough curves at the 18 km compliance boundary, however it increases the potential that a plume will encounter reducing conditions, thus significantly retarding the transport of sorbing radionuclides.

  2. Uranium and thorium decay series disequilibria in young volcanic rocks

    SciTech Connect (OSTI)

    Williams, R.W.

    1988-01-01

    Two of the central questions in igneous geochemistry that study of radioactive disequilibria can help to answer are: what are the rates of magma genesis; and what are the timescales of magma separation and transport. In addition to the temporal information that may be extracted from disequilibria data, the {sup 230}Th/{sup 232}Th of a young rock may be used as a tracer of the Th/U ratio of its source region. Measurements were made by isotope dilution alpha-spectrometry of {sup 238}U, {sup 234}U, {sup 230}Th, and {sup 232}Th in 20 subduction related, 3 oceanic intraplate, and 10 continental intraplate volcanics. {sup 210}Pb was measured in all, {sup 226}Ra was measured in about half, and {sup 228}Th was measured in 10 of the most recent samples. Disequilibrium between {sup 228}Th and {sup 232}Th was found only in the Nacarbonatite samples from Oldoinyo Lengai volcano in Tanzania, which is attributable to {sup 228}Ra/{sup 232}Th {approximately} 27 at the time of eruption. These rocks also have {sup 226}Ra/{sup 230}Th > 60. Three Ra-enrichment models are developed which constrain carbonatite magma formation at less than 20 years before eruption. The effects of different partial melting processes on the {sup 238}U decay series are investigated. If mid-ocean ridge basalts are formed by a dynamic melting process, the {sup 230}Th/{sup 232}Th of the basalts provides a minimum estimate of the Th/U ratio of the source region. The {sup 238}U enrichment in arc volcanics is probably the results of metasomatism of the source by fluids derived from the subducting slab, and the {sup 230}Th enrichment observed for other volcanics is probably due to the partial melting process in the absence of U-bearing fluids.

  3. Pore fluid effects on seismic velocity in anisotropic rocks

    SciTech Connect (OSTI)

    Mukerji, T.; Mavko, G. (Stanford Univ., CA (United States). Dept. of Geophysics)

    1994-02-01

    A simple new technique predicts the high- and low-frequency saturated velocities in anisotropic rocks entirely in terms of measurable dry rock properties without the need for idealized crack geometries. Measurements of dry velocity versus pressure and porosity versus pressure contain all of the necessary information for predicting the frequency-dependent effects of fluid saturation. Furthermore, these measurements automatically incorporate all pore interaction, so there is no limitation to low crack density. The velocities are found to depend on five key interrelated variables: frequency, the distribution of compliant crack-like porosity, the intrinsic or noncrack anisotropy, fluid viscosity and compressibility, and effective pressure. The sensitivity of velocities to saturation is generally greater at high frequencies than low frequencies. The magnitude of the differences from dry to saturated and from low frequency to high frequency is determined by the compliant or crack-like porosity. Predictions of saturated velocities based on dry data for sandstone and granite show that compressional velocities generally increase with saturation and with frequency. However, the degree of compressional wave anisotropy may either increase or decrease upon saturation depending on the crack distribution, the effective pressure, and the frequency at which the measurements are made. Shear-wave velocities can either increase or decrease with saturation, and the degree of anisotropy depends on the microstructure, pressure, and frequency. Consequently great care must be taken when interpreting observed velocity anisotropy for measurements at low frequencies, typical of in situ observations, will generally be different from those at high frequencies, typical of the laboratory.

  4. Spatial statistics for predicting flow through a rock fracture

    SciTech Connect (OSTI)

    Coakley, K.J.

    1989-03-01

    Fluid flow through a single rock fracture depends on the shape of the space between the upper and lower pieces of rock which define the fracture. In this thesis, the normalized flow through a fracture, i.e. the equivalent permeability of a fracture, is predicted in terms of spatial statistics computed from the arrangement of voids, i.e. open spaces, and contact areas within the fracture. Patterns of voids and contact areas, with complexity typical of experimental data, are simulated by clipping a correlated Gaussian process defined on a N by N pixel square region. The voids have constant aperture; the distance between the upper and lower surfaces which define the fracture is either zero or a constant. Local flow is assumed to be proportional to local aperture cubed times local pressure gradient. The flow through a pattern of voids and contact areas is solved using a finite-difference method. After solving for the flow through simulated 10 by 10 by 30 pixel patterns of voids and contact areas, a model to predict equivalent permeability is developed. The first model is for patterns with 80% voids where all voids have the same aperture. The equivalent permeability of a pattern is predicted in terms of spatial statistics computed from the arrangement of voids and contact areas within the pattern. Four spatial statistics are examined. The change point statistic measures how often adjacent pixel alternate from void to contact area (or vice versa ) in the rows of the patterns which are parallel to the overall flow direction. 37 refs., 66 figs., 41 tabs.

  5. /sup 10/Be profiles in lunar surface rock 68815

    SciTech Connect (OSTI)

    Nishiizumi, K.; Imamura, M.; Kohl, C.P.; Nagai, H.; Kobayashi, K.; Yoshida, K.; Yamashita, H.; Reedy, R.C.; Honda, M.; Arnold, J.R.

    1987-01-01

    Cosmic ray produced /sup 10/Be (t/sub 1/2/ = 1.6 x 10/sup 6/ years) activities have been measured in fourteen carefully ground samples of lunar surface rock 68815. The /sup 10/Be profiles from 0 to 4 mm are nearly flat for all three surface angles measured and show a very slight increase with depth from the surface to a depth of 1.5 cm. These depth profiles are in contrast to the SCR (solar cosmic ray) produced /sup 26/Al and /sup 53/Mn profiles measured from these same samples. There is no sign of SCR produced /sup 10/Be in this rock. The discrepancy between the data and the Reedy-Arnold theoretical calculation (about 2 dpm /sup 10/Be/kg at the surface) can be explained in two ways: (1) the low energy proton induced cross sections for /sup 10/Be production from oxygen are really lower than those used in the calculations or, (2) compared to the reported fits for /sup 26/Al and /sup 53/Mn, the solar proton spectral shape is actually softer (exponential rigidity parameter Ro less than 100 MV), the omnidirectional flux above 10 MeV is higher (more than 70 protons/cm/sup 2/ s), and the erosion rate is higher (greater than 1.3 mm/My). /sup 10/Be, as a high energy product, is a very useful nuclide for helping to obtain the SCR spectral shape in the past. 23 refs., 3 figs., 1 tab.

  6. Wave Propagation in Multiferroic Materials

    E-Print Network [OSTI]

    Keller, Scott Macklin

    2013-01-01

    Waves in Magnetoelectric Materials . . . Need forApplication of Multiferroic Materials to Receive AntennaMaterials . . . . . . . . . . . . . . . . . . . . . . . . .

  7. Processing of Neutron Diffraction Data for Strain Measurement in Geological Materials

    SciTech Connect (OSTI)

    Polsky, Yarom [ORNL] [ORNL; An, Ke [ORNL] [ORNL; Anovitz, Lawrence {Larry} M [ORNL; Bingham, Philip R [ORNL] [ORNL; Carmichael, Justin R [ORNL] [ORNL; Dessieux Jr, Luc Lucius [ORNL] [ORNL

    2014-01-01

    : Conventional rock mechanics testing techniques typically involve the loading of samples and measurement of displacements or strains on the outer boundary of the specimen surface. Neutron diffraction based strain measurement techniques represent a unique and powerful tool for measuring the strain within geological materials under load. The structural variability and non-uniform crystallinity of geological materials, however, create many complexities in the intensity patterns that must be analyzed to quantify strains within the material. The attenuating and scattering properties of the pressure cell housing the sample further add difficulties to the data analysis. This paper describes the methods and processes used to process neutron scattering data for strain measurement in geological materials. It is intended to provide a primer for those in the rock mechanics community that are interested in utilizing this technique along with additional discussion of neutron diffraction experimental factors that may affect data quality.

  8. ISRM -Lisbon -General Report Theme T1 -Robert Hack -10 July 2007 1 Rock Engineering and

    E-Print Network [OSTI]

    Hack, Robert

    ISRM - Lisbon - General Report Theme T1 - Robert Hack - 10 July 2007 1 Rock Engineering Observation (ITC), The Netherlands Robert Hack General Report International Society for Rock Mechanics ­ ISRM 11th Congress ­ Lisbon - July 2007 #12;ISRM - Lisbon - General Report Theme T1 - Robert Hack - 10

  9. Hot Dry Rock Geothermal Energy Development in the USA David Duchane and Donald Brown

    E-Print Network [OSTI]

    1 Hot Dry Rock Geothermal Energy Development in the USA by David Duchane and Donald Brown Los of the world's store of geothermal energy. The real potential for growth in the use of geothermal energy lies-engineered geothermal reservoir in hot, crystalline rock by the application of hydraulic fracturing techniques

  10. Time-lapse monitoring of rock properties with coda wave interferometry

    E-Print Network [OSTI]

    Snieder, Roel

    exploited ultrasonic coda waves to monitor time-varying rock properties in a laboratory environment. We haveTime-lapse monitoring of rock properties with coda wave interferometry Alexandre Gre^t,1 Roel dam and volcano monitoring, time-lapse reservoir characterization, earthquake relocation, and stress

  11. SPE 159255-PP Rock Classification from Conventional Well Logs in Hydrocarbon-Bearing

    E-Print Network [OSTI]

    Torres-Verdín, Carlos

    SPE 159255-PP Rock Classification from Conventional Well Logs in Hydrocarbon-Bearing Shale Andrew C typing method for application in hydrocarbon-bearing shale (specifically source rock) reservoirs using-hoc correlations where the interpretation becomes a core matching exercise. Scale effects on measurements

  12. Analysis of a mesoscale infiltration and water seepage test in unsaturated fractured rock: Spatial variabilities

    E-Print Network [OSTI]

    Zhou, Quanlin

    Analysis of a mesoscale infiltration and water seepage test in unsaturated fractured rock: Spatial 2006 Abstract A mesoscale (21 m in flow distance) infiltration and seepage test was recently conducted flow in fractured rock at mesoscale or a larger scale is not necessarily conditional explicitly

  13. Nondestructive and automated testing for soil and rock properties. ASTM special technical publication 1350

    SciTech Connect (OSTI)

    Marr, W.A.; Fairhurst, C.E.

    1999-07-01

    The purpose of the symposium was to highlight recent developments in nondestructive and automated testing for soil and rock properties. Speakers present results of recent research in these areas that have practical application for the rapid and economical testing of soil and rock. Authors were encouraged to identify which testing equipment and methods have sufficient practical application to warrant standards development.

  14. Determining the modal mineralogy of mafic and ultramafic igneous rocks using thermal emission spectroscopy

    E-Print Network [OSTI]

    Hamilton, Victoria E.

    Determining the modal mineralogy of mafic and ultramafic igneous rocks using thermal emission their thermal infrared emission spectra using a linear deconvolution approach, which uses a library of end-member mineral spectra to model a bulk rock spectrum. Over 90% of the modes obtained from thermal emission

  15. STUDY OF LOSS AND DELAY OF SALMON PASSING ROCK ISLAND DAM, COLUMBIA RIVER, 1954-56

    E-Print Network [OSTI]

    STUDY OF LOSS AND DELAY OF SALMON PASSING ROCK ISLAND DAM, COLUMBIA RIVER, 1954-56 By ROBERT R. PORTLAND. OREGON ABSTRACT To determine loss or delay of salmonids in passing Rock Island Dam tagged and released both above and below the dam in 1954-56. They were subsequently observed passing

  16. The influence of mineral detritus on rock varnish formation Ronald I. Dorn a,

    E-Print Network [OSTI]

    Dorn, Ron

    The influence of mineral detritus on rock varnish formation Ronald I. Dorn a, , David H. Krinsley b of aeolian mineral is not incorporated into manganiferous rock varnish. Of those dust particles that are enveloped, submicron sized oval-shaped quartz minerals are the most common type of detritus seen

  17. NUMERICAL SIMULATIONS OF LONG TERM UNSATURATED FLOW AND ACID MINE DRAINAGE AT WASTE ROCK PILES

    E-Print Network [OSTI]

    Aubertin, Michel

    NUMERICAL SIMULATIONS OF LONG TERM UNSATURATED FLOW AND ACID MINE DRAINAGE AT WASTE ROCK PILES Omar present a numerical modeling study of unsaturated water flow and acid mine drainage in idealized (but of oxygen diffusion and acid mine drainage through the waste rock piles showed that oxygen is generally

  18. SOURCES AND EFFECTS OF MINING-RELATED AND NATURAL ACID ROCK DRAINAGE QUANTIFIED USING TRACER

    E-Print Network [OSTI]

    Ryan, Joe

    SOURCES AND EFFECTS OF MINING-RELATED AND NATURAL ACID ROCK DRAINAGE QUANTIFIED USING TRACER Acid Rock Drainage Quantified Using Tracer Dilution, Coal Creek Watershed, Gunnison County, Colorado of Mining-Related and Natural Acid Drainage Quantified Using Tracer Dilution, Coal Creek Watershed, Gunnison

  19. Elastic waves push organic fluids from reservoir rock Igor A. Beresnev,1

    E-Print Network [OSTI]

    Beresnev, Igor

    Elastic waves push organic fluids from reservoir rock Igor A. Beresnev,1 R. Dennis Vigil,2 Wenqing in a laboratory experiment, in which residual saturation is created in a glass micromodel, and mobilization waves push organic fluids from reservoir rock, Geophys. Res. Lett., 32, L13303, doi:10.1029/ 2005GL

  20. Documenting Visual Quality Controls on the Evaluation of Petroleum Reservoir-rocks through

    E-Print Network [OSTI]

    Oliveira, Manuel M.

    , natural gas or water ­ and their permeability ­ the amount of such fluids that can flow through a rockDocumenting Visual Quality Controls on the Evaluation of Petroleum Reservoir-rocks through Ontology and prediction of the quality (porosity, permeability) of petroleum reservoirs during their exploration

  1. Origin of retrograde fluids in metamorphic rocks B. Yardley*, S. Gleeson, S. Bruce, D. Banks

    E-Print Network [OSTI]

    Banks, David

    infiltration of near-surface waters, rather than to the action of deep metamorphic fluids. In this study, we basement rocks is often the result of infiltration of water from sedimentary basins or the surface. At high examine the evidence for deep infiltration of surface-derived waters into metamorphic basement rocks

  2. Apatite in early Archean Isua supracrustal rocks, southern West Greenland: its origin, association with graphite and

    E-Print Network [OSTI]

    Arrhenius, Gustaf

    (Mojzsis et al., 1996; Rosing, 1999). The minimum age of Isua supracrustal rocks is :/ 3.7 Ga (Moorbath et to be reached; either :/3.85 Ga (Nutman et al., 1997b; Mojzsis and Harrison, 2000) or :/3.65 Ga (Kamber and generally high strain of Isua and Akilia rocks respectively (Bridgewater and McGregor, 1974; Griffin et al

  3. MAGNETIC ANISOTROPY AS AN AID TO IDENTIFYING CRM AND DRM IN RED SEDIMENTARY ROCKS

    E-Print Network [OSTI]

    Utrecht, Universiteit

    the remanence anisotropy of hematite-bearing sedimentary rocks. It also shows that very high magnetic fieldsMAGNETIC ANISOTROPY AS AN AID TO IDENTIFYING CRM AND DRM IN RED SEDIMENTARY ROCKS K.P. KODAMA1 June, 2004; Accepted: August 25, 2004 ABSTRACT To further evaluate the potential of magnetic anisotropy

  4. Final Report: Geothermal Dual Acoustic Tool for Measurement of Rock Stress

    SciTech Connect (OSTI)

    Normann, Randy A.

    2014-12-01

    This paper outlines the technology need for a rock formation stress measurement in future EGS wells. This paper reports on the results of work undertaken under a Phase I, DOE/SBIR on the feasibility to build an acoustic well logging tool for measuring rock formation stress.

  5. Final Report. Geothermal Dual Acoustic Tool for Measurement of Rock Stress

    SciTech Connect (OSTI)

    Normann, Randy A

    2014-12-01

    This paper outlines the technology need for a rock formation stress measurement in future EGS wells. This paper reports on the results of work undertaken under a Phase I, DOE/SBIR on the feasibility to build an acoustic well logging tool for measuring rock formation stress.

  6. Aggregate production: Fines generation during rock crushing M.S. Guimaraes a

    E-Print Network [OSTI]

    Palomino, Angelica M.

    Aggregate production: Fines generation during rock crushing M.S. Guimaraes a , J.R. Valdes b , A.M. Palomino c,, J.C. Santamarina d a Aalborg Portland, Denmark b Department of Civil and Environmental Eng; accepted 16 August 2006 Available online 25 September 2006 Abstract The energy required to crush rocks

  7. Solid As A Rock: The Utilization of Polyvinyl Acetate to Stabilize and Consolidate Museum Sandstone Objects

    E-Print Network [OSTI]

    Rock, Chris

    Solid As A Rock: The Utilization of Polyvinyl Acetate to Stabilize and Consolidate Museum Sandstone) commonly used sandstone in creating various objects. Sandstone slabs used in hearth construction these objects unstable. Sandstone is a porous rock. The heat treatment and weathering drives off water and makes

  8. Triple oxygen isotope variations in sedimentary rocks Naomi E. Levin a,

    E-Print Network [OSTI]

    . However, recent oxygen isotope measurements of terrestrial rocks, minerals and waters also reveal common for various equilibrium and kinetic mechanisms. Here we pres- ent triple oxygen isotope data on sedimentary; Pack and Herwartz, 2014), but they are gener- ally overlooked in analysis of terrestrial rocks

  9. Ed Planansky, Hay Springs, NE 2008 DATIN HISTORY OF ROCK

    E-Print Network [OSTI]

    Frank, Tracy D.

    materials use carbon dioxide from the atmosphere to produce their living materials either directly through photosynthesis (plants) or by consuming plant matter ( animals) that used photosynthesis. All carbon dioxide are essentially the same element they have the same chemical properties but have different physical properties

  10. Finding of no significant impact proposed remedial action at two uranium processing sites near Slick Rock, Colorado

    SciTech Connect (OSTI)

    Not Available

    1994-10-01

    The U.S. Department of Energy (DOE) has prepared an environmental assessment (EA) (DOE/EA-0339) of the proposed remedial action at two uranium processing sites near Slick Rock in San Miguel County, Colorado. These sites contain radioactively contaminated materials that would be removed and stabilized at a remote location. Based on the information and analyses in the EA, the DOE has determined that the proposed action does not constitute a major Federal action significantly affecting the quality of the human environment within the meaning of the National Environmental Policy Act (NEPA) of 1969 (42 U.S.C. 4321 et seq.), as amended. Therefore, preparation of an environmental impact statement is not required, and the DOE is issuing this Finding of No Significant Impact (ONSI).

  11. Transporting particulate material

    DOE Patents [OSTI]

    Aldred, Derek Leslie (North Hollywood, CA); Rader, Jeffrey A. (North Hollywood, CA); Saunders, Timothy W. (North Hollywood, CA)

    2011-08-30

    A material transporting system comprises a material transporting apparatus (100) including a material transporting apparatus hopper structure (200, 202), which comprises at least one rotary transporting apparatus; a stationary hub structure (900) constraining and assisting the at least one rotary transporting apparatus; an outlet duct configuration (700) configured to permit material to exit therefrom and comprising at least one diverging portion (702, 702'); an outlet abutment configuration (800) configured to direct material to the outlet duct configuration; an outlet valve assembly from the material transporting system venting the material transporting system; and a moving wall configuration in the material transporting apparatus capable of assisting the material transporting apparatus in transporting material in the material transporting system. Material can be moved from the material transporting apparatus hopper structure to the outlet duct configuration through the at least one rotary transporting apparatus, the outlet abutment configuration, and the outlet valve assembly.

  12. Heap/stack guard pages using a wakeup unit

    DOE Patents [OSTI]

    Gooding, Thomas M; Satterfield, David L; Steinmacher-Burow, Burkhard

    2014-04-29

    A method and system for providing a memory access check on a processor including the steps of detecting accesses to a memory device including level-1 cache using a wakeup unit. The method includes invalidating level-1 cache ranges corresponding to a guard page, and configuring a plurality of wakeup address compare (WAC) registers to allow access to selected WAC registers. The method selects one of the plurality of WAC registers, and sets up a WAC register related to the guard page. The method configures the wakeup unit to interrupt on access of the selected WAC register. The method detects access of the memory device using the wakeup unit when a guard page is violated. The method generates an interrupt to the core using the wakeup unit, and determines the source of the interrupt. The method detects the activated WAC registers assigned to the violated guard page, and initiates a response.

  13. Verifying Temporal Heap Properties Specified via Evolution Logic

    E-Print Network [OSTI]

    Reps, Thomas W.

    Israel, by the RTD project IST-1999-20527 "DAEDALUS" of the European FP5 programme, by ONR under contract

  14. Verifying Temporal Heap Properties Specified via Evolution Logic #

    E-Print Network [OSTI]

    Reps, Thomas W.

    from the Academy of Science Israel, by the RTD project IST­1999­20527 ``DAEDALUS'' of the European FP5

  15. Nanocrystalline ceramic materials

    DOE Patents [OSTI]

    Siegel, Richard W. (Hinsdale, IL); Nieman, G. William (Evanston, IL); Weertman, Julia R. (Evanston, IL)

    1994-01-01

    A method for preparing a treated nanocrystalline metallic material. The method of preparation includes providing a starting nanocrystalline metallic material with a grain size less than about 35 nm, compacting the starting nanocrystalline metallic material in an inert atmosphere and annealing the compacted metallic material at a temperature less than about one-half the melting point of the metallic material.

  16. Zangerl, C., Eberhardt, E., Loew, S., Evans, K., Coupled hydromechanical modelling of surface subsidence in crystalline rock masses due to tunnel drainage. ISRM 2003Technology roadmap for rock mechanics, South African Institute of Mining and Metallurgy, 2

    E-Print Network [OSTI]

    Eberhardt, Erik

    subsidence in crystalline rock masses due to tunnel drainage. ISRM 2003­Technology roadmap for rock mechanics subsidence in crystalline rock masses due to tunnel drainage C. Zangerl, E. Eberhardt, S. Loew, K.F. Evans are rarely observed and in the past, geotechnical engineers would not expect substantial subsidence to occur

  17. Remedial action plan and site design for stabilization of the inactive uranium mill tailings sites at Slick Rock, Colorado: Remedial Action Selection Report. Preliminary final

    SciTech Connect (OSTI)

    Not Available

    1994-03-01

    This proposed remedial action plan incorporates the results of detailed investigation of geologic, geomorphic, and seismic conditions at the proposed disposal site. The proposed remedial action will consist of relocating the uranium mill tailings, contaminated vicinity property materials, demolition debris, and windblown/waterborne materials to a permanent repository at the proposed Burro Canyon disposal cell. The proposed disposal site will be geomorphically stable. Seismic design parameters were developed for the geotechnical analyses of the proposed cell. Cell stability was analyzed to ensure long-term performance of the disposal cell in meeting design standards, including slope stability, settlement, and liquefaction potential. The proposed cell cover and erosion protection features were also analyzed and designed to protect the RRM (residual radioactive materials) against surface water and wind erosion. The location of the proposed cell precludes the need for permanent drainage or interceptor ditches. Rock to be used on the cell top-, side-, and toeslopes was sized to withstand probable maximum precipitation events.

  18. Hot dry rock geothermal energy. Draft final report

    SciTech Connect (OSTI)

    Not Available

    1994-09-01

    This second EPRI workshop on hot dry rock (HDR) geothermal energy, held in May 1994, focused on the status of worldwide HDR research and development and used that status review as the starting point for discussions of what could and should be done next: by U.S. federal government, by U.S. industry, by U.S. state governments, and by international organizations or through international agreements. The papers presented and the discussion that took place indicate that there is a community of researchers and industrial partners that could join forces, with government support, to begin a new effort on hot dry rock geothermal development. This new heat mining effort would start with site selection and confirmatory studies, done concurrently. The confirmatory studies would test past evaluations against the most current results (from the U.S. site at Fenton Hill, New Mexico, and from the two sites in Japan, the one in Russia, and the two in western Europe) and the best models of relevant physical and economic aspects. Site selection would be done in the light of the confirmatory studies and would be influenced by the need to find a site where success is probable and which is representative enough of other sites so that its success would imply good prospects for success at numerous other sites. The test of success would be circulation between a pair of wells, or more wells, in a way that confirmed, with the help of flow modeling, that a multi-well system would yield temperatures, flows and lifetimes that support economically feasible power generation. The flow modeling would have to have previously achieved its own confirmation from relevant data taken from both heat mining and conventional hydrothermal geothermal experience. There may be very relevant experience from the enhancement of ''hot wet rock'' sites, i.e., sites where hydrothermal reservoirs lack, or have come to lack, enough natural water or steam and are helped by water injected cold and produced hot. The new site would have to be selected in parallel with the confirmatory studies because it would have to be modeled as part of the studies and because its similarity to other candidate sites must be known well enough to assure that results at the selected site are relevant to many others. Also, the industry partners in the joint effort at the new site must be part of the confirmatory studies, because they must be convinced of the economic feasibility. This meeting may have brought together the core of people who can make such a joint effort take place. EPRI sponsored the organization of this meeting in order to provide utilities with an update on the prospects for power generation via heat mining. Although the emerging rules for electric utilities competing in power generation make it very unlikely that the rate-payers of any one utility (or small group of utilities) can pay the differential to support this new heat mining research and development effort, the community represented at this meeting may be able to make the case for national or international support of a new heat mining effort, based on the potential size and economics of this resource as a benefit for the nation as a whole and as a contribution to reduced emissions of fossil CO{sub 2} worldwide.

  19. Fracture and Healing of Rock Salt Related to Salt Caverns

    SciTech Connect (OSTI)

    Chan, K.S.; Fossum, A.F.; Munson, D.E.

    1999-03-01

    In recent years, serious investigations of potential extension of the useful life of older caverns or of the use of abandoned caverns for waste disposal have been of interest to the technical community. All of the potential applications depend upon understanding the reamer in which older caverns and sealing systems can fail. Such an understanding will require a more detailed knowledge of the fracture of salt than has been necessary to date. Fortunately, the knowledge of the fracture and healing of salt has made significant advances in the last decade, and is in a position to yield meaningful insights to older cavern behavior. In particular, micromechanical mechanisms of fracture and the concept of a fracture mechanism map have been essential guides, as has the utilization of continuum damage mechanics. The Multimechanism Deformation Coupled Fracture (MDCF) model, which is summarized extensively in this work was developed specifically to treat both the creep and fracture of salt, and was later extended to incorporate the fracture healing process known to occur in rock salt. Fracture in salt is based on the formation and evolution of microfractures, which may take the form of wing tip cracks, either in the body or the boundary of the grain. This type of crack deforms under shear to produce a strain, and furthermore, the opening of the wing cracks produce volume strain or dilatancy. In the presence of a confining pressure, microcrack formation may be suppressed, as is often the case for triaxial compression tests or natural underground stress situations. However, if the confining pressure is insufficient to suppress fracture, then the fractures will evolve with time to give the characteristic tertiary creep response. Two first order kinetics processes, closure of cracks and healing of cracks, control the healing process. Significantly, volume strain produced by microfractures may lead to changes in the permeability of the salt, which can become a major concern in cavern sealing and operation. The MDCF model is used in three simulations of field experiments in which indirect measures were obtained of the generation of damage. The results of the simulations help to verify the model and suggest that the model captures the correct fracture behavior of rock salt. The model is used in this work to estimate the generation and location of damage around a cylindrical storage cavern. The results are interesting because stress conditions around the cylindrical cavern do not lead to large amounts of damage. Moreover, the damage is such that general failure can not readily occur, nor does the extent of the damage suggest possible increased permeation when the surrounding salt is impermeable.

  20. Transient channel incision along Bolinas Ridge, California: Evidence for differential rock uplift adjacent to the San Andreas fault

    E-Print Network [OSTI]

    Heimsath, Arjun M.

    Transient channel incision along Bolinas Ridge, California: Evidence for differential rock uplift as an index of rock uplift rate in steady state landscapes. Here we extend this analysis to landscapes form and inferred incision rate are explained by differential rock uplift within the region east

  1. Finite Element Solution of Nonlinear Transient Rock Damage with Application in Geomechanics of Oil and Gas Reservoirs

    E-Print Network [OSTI]

    Patzek, Tadeusz W.

    the geomechanics of oil and gas reservoirs. The fragile microstructure of some rocks makes it difficult to predict of Steel, Aluminum, Concrete, etc. Moreover, the pattern of rock damage in oil and gas reservoirsFinite Element Solution of Nonlinear Transient Rock Damage with Application in Geomechanics of Oil

  2. Geological Field Trips UHP eclogite and garnet ultramafic rock in the Cuaba Unit, Rio San Juan Metamorphic

    E-Print Network [OSTI]

    Abbott Jr., Richard N.

    1 Geological Field Trips UHP eclogite and garnet ultramafic rock in the Cuaba Unit, Rio San Juan eclogite and garnet ultramafic rock in the Cuaba Unit, Rio San Juan Metamorphic Complex, Dominican Republic) the UHP rocks in the Cuaba unit of the Rio San Juan complex in the Dominican Republic was the second

  3. Nanostructured magnetic materials

    E-Print Network [OSTI]

    Chan, Keith T.

    2011-01-01

    Magnetism and Magnetic Materials Conference, Atlanta, GA (Nanostructured Magnetic Materials by Keith T. Chan Doctor ofinduced by a Si-based material occurs at a Si/Ni interface

  4. Department of Materials Science &

    E-Print Network [OSTI]

    Zhigilei, Leonid V.

    Developing Leaders of Innovation Department of Materials Science & Engineering #12;At the University of Virginia, students in materials science, engineering physics and engineering science choose to tackle compelling issues in materials science and engineering or engineering science

  5. Sandia Energy - Materials Chemistry

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Materials Chemistry Home Transportation Energy Predictive Simulation of Engines Clean FuelsPower Materials Chemistry Materials ChemistryAshley Otero2015-10-28T02:42:21+00:00...

  6. Model Evaluation of the Thermo-Hydrological Response in Argillaceous Sedimentary Rock Repository for Direct Disposal of Dual-Purpose Canisters

    E-Print Network [OSTI]

    Zheng, Liange

    2014-01-01

    Alternative Concepts for Direct Disposal of Dual-PurposeRock Repository for Direct Disposal of Dual-PurposeRock Repository for Direct Disposal of Dual-Purpose

  7. Transporting Hazardous Materials

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Transporting Hazardous Materials The procedures given below apply to all materials that are considered to be hazardous by the U.S. Department of Transportation (DOT). Consult your...

  8. Institute for Materials Science

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Security Education Center About Us Conferences and Workshops Advanced Qualification of Additive Manufacturing Materials Workshop Quantum and Dirac Materials for Energy...

  9. Materials Physics and Applications

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    MPA Materials Physics and Applications We develop new technologies that solve pressing national energy and security challenges by exploring and exploiting materials and their...

  10. Hot-dry-rock energy: review of environmental aspects

    SciTech Connect (OSTI)

    O'Banion, K.

    1981-10-13

    The potential environmental and socioeconomic impacts of the production of energy contained in hot dry rock (HDR) is surveyed here. In general, careful siting and timing and routine control measures should be adequate to prevent significant environmental harm; sites of particular ecological or visual and recreational value, however, may require more extensive (and more expensive) precautions such as using multiwell pads to reduce land disturbance and dry or wet and dry cooling towers to reduce or eliminate the consumptive use of water. The most important uncertainty among the environmental concerns is the seismic response of HDR formations to short-duration fluid injections at pressures above fracture thresholds; continued monitoring at HDR development sites is necessary. The direct socioeconomic impacts of HDR development should be relatively minor, owing to its capital-intensive nature. Of greater potential importance are the indirect jobs resulting from such development, which could cause significant demographic (and thus fiscal and social) impacts in sparsely populated regions. However, such indirect growth is not expected to begin until a large, stable HDR industry is established in a region, and thus its impacts are expected to be permanent rather than transient.

  11. Selection and durability of seal materials for a bedded salt repository: preliminary studies

    SciTech Connect (OSTI)

    Roy, D.M.; Grutzeck, M.W.; Wakeley, L.D.

    1983-11-01

    This report details preliminary results of both experimental and theoretical studies of cementitious seal materials for use in a proposed nuclear waste repository in bedded salt. Effects of changes in bulk composition and environment upon phase stability and physical/mechanical properties have been evaluated for more than 25 formulations. Bonding and interfacial characteristics of the region between host rock and seal material or concrete aggregate and cementitious matrix for selected formulations have been studied. Compatibilities of clays and zeolites in brines typical of the SE New Mexico region have been investigated, and their stabilities reviewed. Results of these studies have led to the conclusion that cementitious materials can be formulated which are compatible with the major rock types in a bedded salt repository environment. Strengths are more than adequate, permeabilities are consistently very low, and elastic moduli generally increase only very slightly with time. Seal formulation guidelines and recommendations for present and future work are presented. 73 references, 25 figures, 61 tables.

  12. HAZARDOUS MATERIALS EMERGENCY RESPONSE

    E-Print Network [OSTI]

    ANNEX Q HAZARDOUS MATERIALS EMERGENCY RESPONSE #12;ANNEX Q - HAZARDOUS MATERIALS EMERGENCY RESPONSE 03/10/2014 v.2.0 Page Q-1 PROMULGATION STATEMENT Annex Q: Hazardous Materials Emergency Response, and contents within, is a guide to how the University conducts a response specific to a hazardous materials

  13. Materials Science & Engineering

    E-Print Network [OSTI]

    Materials Science & Engineering In this presentation the role of materials in power generation sector is about 20%, opportunities for materials-based technologies to improve energy efficiency (e Ridge National Laboratory (ORNL). He is also the Director of the High Temperature Materials Laboratory

  14. Tritium breeding materials

    SciTech Connect (OSTI)

    Hollenberg, G.W.; Johnson, C.E.; Abdou, M.

    1984-03-01

    Tritium breeding materials are essential to the operation of D-T fusion facilities. Both of the present options - solid ceramic breeding materials and liquid metal materials are reviewed with emphasis not only on their attractive features but also on critical materials issues which must be resolved.

  15. CRAD, Packaging and Transfer of Hazardous Materials and Materials...

    Office of Environmental Management (EM)

    Packaging and Transfer of Hazardous Materials and Materials of National Security Interest Assessment Plan CRAD, Packaging and Transfer of Hazardous Materials and Materials of...

  16. Petroleum potentialities of central Tunisia as deduced from identification and characterization of oil source rocks

    SciTech Connect (OSTI)

    Saidi, M.; Acheche, M.H.; Inoubli, H. (ETAP, Tunis (Tunisia)); Belayouni, H. (Faculte des Sciences de Tunis (Tunisia))

    1991-08-01

    Many potential oil source rocks occur within the Tunisian stratigraphic column, including Silurian-Devonian shales, Albian and upper Albian-Vraconian carbonates, Cenomanian-Turonian black shales and lower Eocene carbonates. This focuses on the inventory of potential oil source rocks in central Tunisia ranging from middle Jurassic to Turonian. The emphasis is on determining their genetic potential and whether they could have generated oil and gas. Geochemical data obtained from the analysis of at least 2,147 samples show this region to be of significant interest as a petroleum prospective area. The main source rocks identified are Toarcian shales, upper Albian-Vraconian carbonates and Cenomanian-Turonian black shales. They contain predominantly type 2 organic matter (oil and gas prone) and are at the low maturity limit of the oil window. The occurrence of those source rocks close to numerous potential reservoir facies supports the conclusion that central Tunisia is a very interesting area for petroleum exploration.

  17. Richard A. Schultz Geomechanics-Rock Fracture Group, Department of Geological

    E-Print Network [OSTI]

    AUTHORS Richard A. Schultz Geomechanics-Rock Fracture Group, Department of Geological Sciences University (1982), and his Ph.D. in geomechanics from Purdue University (1987). He has worked at the Lunar

  18. Multidisciplinary Imaging of Rock Properties in Carbonate Reservoirs for Flow-Unit Targeting

    SciTech Connect (OSTI)

    Ruppel, Stephen C.

    2002-10-08

    During the period major accomplishments were in (1) characterization of facies and cyclicity in subsurface cores and in outcrop, (2) construction of a preliminary stratigraphic framework, (3) definition of rock fabrics, and (4) correlation of 3-D seismic data.

  19. An Improved Synthesis of BrettPhos- and RockPhos-Type Biarylphosphine Ligands

    E-Print Network [OSTI]

    Hoshiya, Naoyuki

    Improved processes for the preparation of biphenyl-based phosphine ligands t-BuBrettPhos, RockPhos, and BrettPhos are presented. The new methods, featuring the use of Grignard reagents and catalytic amounts of copper, are ...

  20. Quantifying the Effect of Kerogen on Electrical Resistivity Measurements on Organic-rich Source Rocks 

    E-Print Network [OSTI]

    Kethireddy, Nikhil Reddy

    2013-12-04

    Interpretation of electrical resistivity logs in organic-rich source rocks has been challenging for petrophysicists. Conventional resistivity-porosity-saturation models (e.g., Archie’s, Dual-Water, and Waxman-Smits equations) ...

  1. Probabilistic Seismic Demand Model and Fragility Estimates for Symmetric Rigid Blocks Subject to Rocking Motions 

    E-Print Network [OSTI]

    Bakhtiary, Esmaeel

    2013-01-15

    This thesis presents a probability model to predict the maximum rotation of rocking bodies exposed to seismic excitations given specific earthquake intensity measures. After obtaining the nonlinear equations of motion and clarification...

  2. Photo-Disintegration of the Iron Nucleus in Fractured Magnetite Rocks with Magnetostriction

    E-Print Network [OSTI]

    A. Widom; J. Swain; Y. N. Srivastava

    2013-06-25

    There has been considerable interest in recent experiments on iron nuclear disintegrations observed when rocks containing such nuclei are crushed and fractured. The resulting nuclear transmutations are particularly strong for the case of magnetite rocks, i.e. loadstones. We argue that the fission of the iron nucleus is a consequence of photo-disintegration. The electro-strong coupling between electromagnetic fields and nuclear giant dipole resonances are central for producing observed nuclear reactions. The large electron energies produced during the fracture of piezomagnetic rocks are closely analogous to the previously discussed case of the fracture of piezoelectric rocks. In both cases electro-weak interactions can produce neutrons and neutrinos from energetic protons and electrons thus inducing nuclear transmutations. The electro-strong condensed matter coupling discussed herein represents new many body collective nuclear photo-disintegration effects.

  3. Conditions of Metamorphism in Lower-Plate Rocks at Bare Mountain, Nevada--

    E-Print Network [OSTI]

    Hoisch, Thomas D.

    1 Chapter B Conditions of Metamorphism in Lower-Plate Rocks at Bare Mountain, Nevada-- Implications........................................................................................................................ 4 General Geology of Bare Mountain................................................................. 16 North-Central, Northeastern, and Eastern Bare Mountain

  4. Compaction of porous rock by dissolution on discrete stylolites: A one-dimensional model

    E-Print Network [OSTI]

    Einat, Aharonov

    in sedimentary rocks [Weyl, 1959], with practical implications to oil, gas, and water flows, as well transport away from the clay layer followed by pore cementation. The evolution of the porosity, reactant

  5. Three-dimensional displacement-length scaling and maximum dimension of normal faults in layered rocks

    E-Print Network [OSTI]

    and Scholz, 2000], (2) linkage [e.g., Cartwright et al., 1995] or (3) variations in rock properties [Bu on a 30­70° dipping bedding plane of early Maestrichtian continental limestone in the lignite quarry from

  6. Vesicle-Specific Noble Gas Analyses of "Popping Rock": Implications for Primordial

    E-Print Network [OSTI]

    Graham, David W.

    -rich basaltic glass "popping rock" were found to have the same carbon dioxide, helium-4, and argon-40, production of 21 Ne and production of 4 He are both related to U Th concentrations (10, 11). The vola- tiles

  7. Coupled hydro-mechanical processes in crytalline rock and ininduratedand plastic clays: A comparative discussion

    SciTech Connect (OSTI)

    Tsang, Chin-Fu; Blumling, Peter; Bernier, Frederic

    2006-02-15

    This paper provides a comparative discussion of coupledhydromechanical processes in three different geological formations:crystalline rock, plastic clay, and indurated clay. First, the importantprocesses and associated property characteristics in the three rock typesare discussed. Then, one particular hydromechanical coupling is broughtup for detailed consideration, that of pore pressure changes in nearbyrock during tunnel excavation. Three field experiments in the three rocktypes are presented and their results are discussed. It is shown that themain physical processes are common to all three rock types, but with verydifferent time constants. The different issues raised by these cases arepointed out, and the transferable lessons learned are identified. Suchcross fertilization and simultaneous understanding of coupled processesin three very different rock types help to greatly enhance confidence inthe state of science in this field.

  8. The effects of acid contact time and rock surfaces on acid fracture conductivity 

    E-Print Network [OSTI]

    Melendez Castillo, Maria Georgina

    2009-06-02

    in rock strength at the contact points for dolomite yielded lower conductivity after closure. The effects of hardness variation on conductivity are higher in dolomite than in limestone and chalk. It is apparent that longer contact times do not always...

  9. Numerical and analytical modeling of heat transfer between fluid and fractured rocks

    E-Print Network [OSTI]

    Li, Wei, S.M. Massachusetts Institute of Technology

    2014-01-01

    Modeling of heat transfer between fluid and fractured rocks is of particular importance for energy extraction analysis in EGS, and therefore represents a critical component of EGS design and performance evaluation. In ...

  10. Metamorphic style and development of the blueschist-to eclogite-facies rocks, Cyclades, Greece

    E-Print Network [OSTI]

    Brady, John B.

    Metamorphic style and development of the blueschist- to eclogite-facies rocks, Cyclades, Greece.c.schumacher@bristol.ac.uk Abstract. The island of Syros, Greece is part of the Attic-Cycladic blueschist belt, formed during Mesozoic

  11. Proceedings of the Second International Symposium on Dynamics of Fluids in Fractured Rock

    E-Print Network [OSTI]

    Faybishenko, Boris; Witherspoon, Paul A.

    2004-01-01

    of hydraulic tests at Soultz-sous-Forêts, European Hot-Dry-Hot Dry Rock (HDR) site Soultz-sous-Forêts in Alsace/France,test interpretation from the Soultz- sous-Fôrets geothermal

  12. Rock-Fluid Chemistry Impacts on Shale Hydraulic Fracture and Microfracture Growth 

    E-Print Network [OSTI]

    Aderibigbe, Aderonke

    2012-07-16

    The role of surface chemical effects in hydraulic fracturing of shale is studied using the results of unconfined compression tests and Brazilian tests on Mancos shale- cored at depths of 20-60 ft. The rock mineralogy, total ...

  13. From Gondwanaland, with love : the tale of how Boston got its rocks

    E-Print Network [OSTI]

    Cull, Selby (Selby C.)

    2006-01-01

    The rocks on which the city of Boston was built did not form as part of North America. They formed about 600 million years ago, at the South Pole, as the northern coast of a supercontinent called Gondwanaland. Boston's ...

  14. What brought them up? Exhumation of the Dabie Shan ultrahigh-pressure rocks

    E-Print Network [OSTI]

    Hacker, Bradley R.

    What brought them up? Exhumation of the Dabie Shan ultrahigh-pressure rocks Bradley R. Hacker containing coesite recrys- tallized in Late Triassic time (Ames et al., 1995; Eide et al., 1994; Hacker et al

  15. Effects of burial history, rock ductility and recovery magnitude on inversion of normal faulted strata 

    E-Print Network [OSTI]

    Kuhle, Nathan John

    2001-01-01

    , and distributed fracturing and folding. The relative contribution of these mechanisms depends on the relative ductility of the rock and magnitude of inversion. Reverse slip on the normal fault and distributed fracturing occur during early stages of inversion...

  16. Subsurface Geology of the Fenton Hill Hot Dry Rock Geothermal Energy Site

    SciTech Connect (OSTI)

    Levey, Schon S.

    2010-12-01

    The Precambrian rock penetrated by wells EE-2A and -3A belongs to one or more granitic to granodioritic plutons. The plutonic rock contains two major xenolith zones of amphibolite, locally surrounded by fine-grained mafic rock of hybrid igneous origin. The granodiorite is cut by numerous leucogranite dikes that diminish in abundance with depth. The most prominent structural feature is the main breccia zone, in which the rock is highly fractured and moderately altered. This zone is at least 75 m thick and is of uncertain but near-horizontal orientation. Fracture abundance decreases with increasing depth below the main breccia zone, and fractures tend to be associated with leucogranite dikes. This association suggests that at least some of the fractures making up the geothermal reservoir are of Precambrian age or have long-range orientations controlled by the presence of Precambrian-age granitic dikes.

  17. Properties of CO2-Rich Pore Fluids and Their Effect on Porosity Evolution in EGS Rocks

    Broader source: Energy.gov [DOE]

    Project objective: Quantify key parameters critically needed for developing and validating numerical modeling of chemical interactions between EGS reservoir rocks and supercritical CO2and CO2-rich aqueous fluids.

  18. Synchrotron X-ray Studies of Super-critical Carbon Dioxide / Reservoir Rock Interfaces

    Broader source: Energy.gov [DOE]

    Project obectives: Utilize synchrotron X-ray measurements, to monitor all aspects of atomic to nanoscale structural changes resulting from chemical interactions of scCO2-H2O binary fluids with rocks under environments directly relevant to EGS.

  19. Comparison of the effects in the rock mass of large-scale chemical...

    Office of Scientific and Technical Information (OSTI)

    Comparison of the effects in the rock mass of large-scale chemical and nuclear explosions. Final technical report, June 9, 1994--October 9, 1994 Citation Details In-Document Search...

  20. Uranium mineralization in fluorine-enriched volcanic rocks

    SciTech Connect (OSTI)

    Burt, D.M.; Sheridan, M.F.; Bikun, J.; Christiansen, E.; Correa, B.; Murphy, B.; Self, S.

    1980-09-01

    Several uranium and other lithophile element deposits are located within or adjacent to small middle to late Cenozoic, fluorine-rich rhyolitic dome complexes. Examples studied include Spor Mountain, Utah (Be-U-F), the Honeycomb Hills, Utah (Be-U), the Wah Wah Mountains, Utah (U-F), and the Black Range-Sierra Cuchillo, New Mexico (Sn-Be-W-F). The formation of these and similar deposits begins with the emplacement of a rhyolitic magma, enriched in lithophile metals and complexing fluorine, that rises to a shallow crustal level, where its roof zone may become further enriched in volatiles and the ore elements. During initial explosive volcanic activity, aprons of lithicrich tuffs are erupted around the vents. These early pyroclastic deposits commonly host the mineralization, due to their initial enrichment in the lithophile elements, their permeability, and the reactivity of their foreign lithic inclusions (particularly carbonate rocks). The pyroclastics are capped and preserved by thick topaz rhyolite domes and flows that can serve as a source of heat and of additional quantities of ore elements. Devitrification, vapor-phase crystallization, or fumarolic alteration may free the ore elements from the glassy matrix and place them in a form readily leached by percolating meteoric waters. Heat from the rhyolitic sheets drives such waters through the system, generally into and up the vents and out through the early tuffs. Secondary alteration zones (K-feldspar, sericite, silica, clays, fluorite, carbonate, and zeolites) and economic mineral concentrations may form in response to this low temperature (less than 200 C) circulation. After cooling, meteoric water continues to migrate through the system, modifying the distribution and concentration of the ore elements (especially uranium).

  1. Puncture detecting barrier materials

    DOE Patents [OSTI]

    Hermes, R.E.; Ramsey, D.R.; Stampfer, J.F.; Macdonald, J.M.

    1998-03-31

    A method and apparatus for continuous real-time monitoring of the integrity of protective barrier materials, particularly protective barriers against toxic, radioactive and biologically hazardous materials has been developed. Conductivity, resistivity or capacitance between conductive layers in the multilayer protective materials is measured by using leads connected to electrically conductive layers in the protective barrier material. The measured conductivity, resistivity or capacitance significantly changes upon a physical breach of the protective barrier material. 4 figs.

  2. Puncture detecting barrier materials

    DOE Patents [OSTI]

    Hermes, Robert E. (Los Alamos, NM); Ramsey, David R. (Bothel, WA); Stampfer, Joseph F. (Santa Fe, NM); Macdonald, John M. (Santa Fe, NM)

    1998-01-01

    A method and apparatus for continuous real-time monitoring of the integrity of protective barrier materials, particularly protective barriers against toxic, radioactive and biologically hazardous materials has been developed. Conductivity, resistivity or capacitance between conductive layers in the multilayer protective materials is measured by using leads connected to electrically conductive layers in the protective barrier material. The measured conductivity, resistivity or capacitance significantly changes upon a physical breach of the protective barrier material.

  3. Nanocrystalline ceramic materials

    DOE Patents [OSTI]

    Siegel, R.W.; Nieman, G.W.; Weertman, J.R.

    1994-06-14

    A method is disclosed for preparing a treated nanocrystalline metallic material. The method of preparation includes providing a starting nanocrystalline metallic material with a grain size less than about 35 nm, compacting the starting nanocrystalline metallic material in an inert atmosphere and annealing the compacted metallic material at a temperature less than about one-half the melting point of the metallic material. 19 figs.

  4. ACOUSTICAL IMAGING AND MECHANICAL PROPERTIES OF SOFT ROCK AND MARINE SEDIMENTS

    SciTech Connect (OSTI)

    Thurman E. Scott, Jr.; Younane Abousleiman

    2004-04-01

    The research during this project has concentrated on developing a correlation between rock deformation mechanisms and their acoustic velocity signature. This has included investigating: (1) the acoustic signature of drained and undrained unconsolidated sands, (2) the acoustic emission signature of deforming high porosity rocks (in comparison to their low porosity high strength counterparts), (3) the effects of deformation on anisotropic elastic and poroelastic moduli, and (4) the acoustic tomographic imaging of damage development in rocks. Each of these four areas involve triaxial experimental testing of weak porous rocks or unconsolidated sand and involves measuring acoustic properties. The research is directed at determining the seismic velocity signature of damaged rocks so that 3-D or 4-D seismic imaging can be utilized to image rock damage. These four areas of study are described in the report: (1) Triaxial compression experiments have been conducted on unconsolidated Oil Creek sand at high confining pressures. (2) Initial experiments on measuring the acoustic emission activity from deforming high porosity Danian chalk were accomplished and these indicate that the AE activity was of a very low amplitude. (3) A series of triaxial compression experiments were conducted to investigate the effects of induced stress on the anisotropy developed in dynamic elastic and poroelastic parameters in rocks. (4) Tomographic acoustic imaging was utilized to image the internal damage in a deforming porous limestone sample. Results indicate that the deformation damage in rocks induced during laboratory experimentation can be imaged tomographically in the laboratory. By extension the results also indicate that 4-D seismic imaging of a reservoir may become a powerful tool for imaging reservoir deformation (including imaging compaction and subsidence) and for imaging zones where drilling operation may encounter hazardous shallow water flows.

  5. Precise orientation of single crystals by a simple x-ray diffraction rocking curve method

    SciTech Connect (OSTI)

    Doucette, L.D.; Pereira da Cunha, M.; Lad, R.J.

    2005-03-01

    A simple method has been developed for accurately measuring the crystallographic orientation of a single crystal boule, employing a conventional four-circle x-ray diffraction arrangement in the rocking curve mode which relaxes the need for precise instrument and/or reference alignment. By acquiring a total of eight rocking curve measurements at specific orientations about the specimen azimuth, the absolute miscut angle between a crystal surface and the desired crystallographic plane can be resolved to within {+-}0.01 deg.

  6. Release of uranium and thorium from granitic rocks during in situ weathering and initial erosion 

    E-Print Network [OSTI]

    Ledger, Ernest Broughton

    1978-01-01

    RELEASE OF URANIUM AND THORIUM FROM GRANITIC ROCKS DURING IN SITU WEATHERING AND INITIAL EROSION A Thesis by ERNEST BROUGHTON LEDGER, JR. Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement... for the degree of MASTER OF SCIENCE August. 1978 Major Subject: Geology RELEASE OF URANIUM AND THORIUM FROM GRANITIC ROCKS DURING IN SITU WEATHERING AND INITIAL EROSION A Thesis by ERNEST BROUGHTON LEDGER, JR. Approved as to style and content by...

  7. Displacement of oil from reservoir rock using high molecular weight polymer solutions 

    E-Print Network [OSTI]

    Barzi, Houshang

    1972-01-01

    DISPLACEMENT OF OIL FROM RESERVOIR ROCK USING HIGH MOLECULAR MEIGHT POLYMER SOLUTIONS A Thesis by HOUSHANG BARZI Submitted to the Graduate College of Texas AIM University in partial fulfillment of the requirement for the degree of MASTER... OF SCIENCE Aup;ust l972 Major Subject; Petroleum Engineering DISPLACENJENT OF OIL FROM RESERVOIR ROCK USING HIGH MOLECULAR WEIGHT POLYMER SOLUTIONS A Thesis by HOUSHANG BARZI Approved as +o style and content by~ airman of Commi+tee Member ~ed f' D p...

  8. Proceedings of the International Symposium on Dynamics of Fluids in Fractured Rocks: Concepts and Recent Advances

    SciTech Connect (OSTI)

    Faybishenko, B.

    1999-02-01

    This publication contains extended abstracts of papers presented at the International Symposium ''Dynamics of Fluids in Fractured Rocks: Concepts and Recent Advances'' held at Ernest Orlando Lawrence Berkeley National Laboratory on February 10-12, 1999. This Symposium is organized in Honor of the 80th Birthday of Paul A. Witherspoon, who initiated some of the early investigations on flow and transport in fractured rocks at the University of California, Berkeley, and at Lawrence Berkeley National Laboratory. He is a key figure in the development of basic concepts, modeling, and field measurements of fluid flow and contaminant transport in fractured rock systems. The technical problems of assessing fluid flow, radionuclide transport, site characterization, modeling, and performance assessment in fractured rocks remain the most challenging aspects of subsurface flow and transport investigations. An understanding of these important aspects of hydrogeology is needed to assess disposal of nu clear wastes, development of geothermal resources, production of oil and gas resources, and remediation of contaminated sites. These Proceedings of more than 100 papers from 12 countries discuss recent scientific and practical developments and the status of our understanding of fluid flow and radionuclide transport in fractured rocks. The main topics of the papers are: Theoretical studies of fluid flow in fractured rocks; Multi-phase flow and reactive chemical transport in fractured rocks; Fracture/matrix interactions; Hydrogeological and transport testing; Fracture flow models; Vadose zone studies; Isotopic studies of flow in fractured systems; Fractures in geothermal systems; Remediation and colloid transport in fractured systems; and Nuclear waste disposal in fractured rocks.

  9. Millimeter wave spectroscopy of rocks and fluids John A. Scalesa

    E-Print Network [OSTI]

    - second pulse incident on a suitable photoconductor will pro- duce electromagnetic radiation February 2006 One region of the electromagnetic spectrum that is relatively unexploited for materials Institute of Physics. DOI: 10.1063/1.2172403 The millimeter wave band of the electromagnetic EM spectrum

  10. ACOUSTICAL IMAGING AND MECHANICAL PROPERTIES OF SOFT ROCK AND MARINE SEDIMENTS

    SciTech Connect (OSTI)

    Thurman E. Scott, Jr., Ph.D.; Younane Abousleiman, Ph.D.; Musharraf Zaman, Ph.D., P.E.

    2001-01-31

    During this phase of the project the research team concentrated on acquisition of acoustic emission data from the high porosity rock samples. The initial experiments indicated that the acoustic emission activity from high porosity Danian chalk were of a very low amplitude. Even though the sample underwent yielding and significant plastic deformation the sample did not generate significant AE activity. This was somewhat surprising. These initial results call into question the validity of attempting to locate AE activity in this weak rock type. As a result the testing program was slightly altered to include measuring the acoustic emission activity from many of the rock types listed in the research program. The preliminary experimental results indicate that AE activity in the sandstones is much higher than in the carbonate rocks (i.e., the chalks and limestones). This observation may be particularly important for planning microseismic imaging of reservoir rocks in the field environment. The preliminary results suggest that microseismic imaging of reservoir rock from acoustic emission activity generated from matrix deformation (during compaction and subsidence) would be extremely difficult to accomplish.

  11. Dynamic fracture of granular material under quasi-static loading , The Institute of Earth Sciences, The Hebrew University of Jerusalem

    E-Print Network [OSTI]

    Fineberg, Jay

    Dynamic fracture of granular material under quasi-static loading Amir Sagy1 , The Institute;Abstract The dynamics of rapid fracture in heterogeneous grainy media are studied in a series of laboratory experiments in which artificial rock slab is fractured under conditions of uniaxial tension. By performing

  12. Joining of dissimilar materials

    DOE Patents [OSTI]

    Tucker, Michael C; Lau, Grace Y; Jacobson, Craig P

    2012-10-16

    A method of joining dissimilar materials having different ductility, involves two principal steps: Decoration of the more ductile material's surface with particles of a less ductile material to produce a composite; and, sinter-bonding the composite produced to a joining member of a less ductile material. The joining method is suitable for joining dissimilar materials that are chemically inert towards each other (e.g., metal and ceramic), while resulting in a strong bond with a sharp interface between the two materials. The joining materials may differ greatly in form or particle size. The method is applicable to various types of materials including ceramic, metal, glass, glass-ceramic, polymer, cermet, semiconductor, etc., and the materials can be in various geometrical forms, such as powders, fibers, or bulk bodies (foil, wire, plate, etc.). Composites and devices with a decorated/sintered interface are also provided.

  13. Pore Fluid Effects on Shear Modulus in a Model of Heterogeneous Rocks, Reservoirs, and Granular Media

    SciTech Connect (OSTI)

    Berryman, J G

    2005-03-23

    To provide quantitative measures of the importance of fluid effects on shear waves in heterogeneous reservoirs, a model material called a ''random polycrystal of porous laminates'' is introduced. This model poroelastic material has constituent grains that are layered (or laminated), and each layer is an isotropic, microhomogeneous porous medium. All grains are composed of exactly the same porous constituents, and have the same relative volume fractions. The order of lamination is not important because the up-scaling method used to determine the transversely isotropic (hexagonal) properties of the grains is Backus averaging, which--for quasi-static or long-wavelength behavior--depends only on the volume fractions and layer properties. Grains are then jumbled together totally at random, filling all space, and producing an overall isotropic poroelastic medium. The poroelastic behavior of this medium is then analyzed using the Peselnick-Meister-Watt bounds (of Hashin-Shtrikman type). We study the dependence of the shear modulus on pore fluid properties and determine the range of behavior to be expected. In particular we compare and contrast these results to those anticipated from Gassmann's fluid substitution formulas, and to the predictions of Mavko and Jizba for very low porosity rocks with flat cracks. This approach also permits the study of arbitrary numbers of constituents, but for simplicity the numerical examples are restricted here to just two constituents. This restriction also permits the use of some special exact results available for computing the overall effective stress coefficient in any two-component porous medium. The bounds making use of polycrystalline microstructure are very tight. Results for the shear modulus demonstrate that the ratio of compliance differences R (i.e., shear compliance changes over bulk compliance changes when going from drained to undrained behavior, or vice versa) is usually nonzero and can take a wide range of values, both above and below the value R = 4/15 valid for low porosity, very low aspect ratio flat cracks. Results show the overall shear modulus in this model can depend relatively strongly on mechanical properties of the pore fluids, sometimes (but rarely) more strongly than the dependence of the overall bulk modulus on the fluids.

  14. Nondestructive material characterization

    DOE Patents [OSTI]

    Deason, Vance A. (Idaho Falls, ID); Johnson, John A. (Idaho Falls, ID); Telschow, Kenneth L. (Idaho Falls, ID)

    1991-01-01

    A method and apparatus for nondestructive material characterization, such as identification of material flaws or defects, material thickness or uniformity and material properties such as acoustic velocity. The apparatus comprises a pulsed laser used to excite a piezoelectric (PZ) transducer, which sends acoustic waves through an acoustic coupling medium to the test material. The acoustic wave is absorbed and thereafter reflected by the test material, whereupon it impinges on the PZ transducer. The PZ transducer converts the acoustic wave to electrical impulses, which are conveyed to a monitor.

  15. EC Transmission Line Materials

    SciTech Connect (OSTI)

    Bigelow, Tim S

    2012-05-01

    The purpose of this document is to identify materials acceptable for use in the US ITER Project Office (USIPO)-supplied components for the ITER Electron cyclotron Heating and Current Drive (ECH&CD) transmission lines (TL), PBS-52. The source of material property information for design analysis shall be either the applicable structural code or the ITER Material Properties Handbook. In the case of conflict, the ITER Material Properties Handbook shall take precedence. Materials selection, and use, shall follow the guidelines established in the Materials Assessment Report (MAR). Materials exposed to vacuum shall conform to the ITER Vacuum Handbook. [Ref. 2] Commercial materials shall conform to the applicable standard (e.g., ASTM, JIS, DIN) for the definition of their grade, physical, chemical and electrical properties and related testing. All materials for which a suitable certification from the supplier is not available shall be tested to determine the relevant properties, as part of the procurement. A complete traceability of all the materials including welding materials shall be provided. Halogenated materials (example: insulating materials) shall be forbidden in areas served by the detritiation systems. Exceptions must be approved by the Tritium System and Safety Section Responsible Officers.

  16. Experimental and Analytical Research on Fracture Processes in ROck

    SciTech Connect (OSTI)

    Herbert H.. Einstein; Jay Miller; Bruno Silva

    2009-02-27

    Experimental studies on fracture propagation and coalescence were conducted which together with previous tests by this group on gypsum and marble, provide information on fracturing. Specifically, different fracture geometries wsere tested, which together with the different material properties will provide the basis for analytical/numerical modeling. INitial steps on the models were made as were initial investigations on the effect of pressurized water on fracture coalescence.

  17. Earth-Abundant Materials

    Broader source: Energy.gov [DOE]

    DOE funds research into Earth-abundant materials for thin-film solar applications in response to the issue of materials scarcity surrounding other photovoltaic (PV) technologies. The sections below...

  18. Factors of material consumption

    E-Print Network [OSTI]

    Silva Díaz, Pamela Cristina

    2012-01-01

    Historic consumption trends for materials have been studied by many researchers, and, in order to identify the main drivers of consumption, special attention has been given to material intensity, which is the consumption ...

  19. Materials Science & Engineering

    E-Print Network [OSTI]

    and Forensics team in the Polymers and Coatings Group, MST-7. He graduated from the University of Toledo, aerogels, carbon fiber composites, damaged materials, and low density materials examining defects

  20. CRITICAL MATERIALS INSTITUTE PROJECTS

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    INL National Technology Roadmap for Critical Materials 4 4-3 4.3.3 McCall, Scott LLNL Additive Manufacturing of Permanent Magnets 2 2-1 2.1.2 Turchi, Patrice LLNL Materials...

  1. Nanostructured composite reinforced material

    DOE Patents [OSTI]

    Seals, Roland D. (Oak Ridge, TN); Ripley, Edward B. (Knoxville, TN); Ludtka, Gerard M. (Oak Ridge, TN)

    2012-07-31

    A family of materials wherein nanostructures and/or nanotubes are incorporated into a multi-component material arrangement, such as a metallic or ceramic alloy or composite/aggregate, producing a new material or metallic/ceramic alloy. The new material has significantly increased strength, up to several thousands of times normal and perhaps substantially more, as well as significantly decreased weight. The new materials may be manufactured into a component where the nanostructure or nanostructure reinforcement is incorporated into the bulk and/or matrix material, or as a coating where the nanostructure or nanostructure reinforcement is incorporated into the coating or surface of a "normal" substrate material. The nanostructures are incorporated into the material structure either randomly or aligned, within grains, or along or across grain boundaries.

  2. Nanocomposites as thermoelectric materials

    E-Print Network [OSTI]

    Hao, Qing

    2010-01-01

    Thermoelectric materials have attractive applications in electric power generation and solid-state cooling. The performance of a thermoelectric device depends on the dimensionless figure of merit (ZT) of the material, ...

  3. Karankawa linguistic Materials

    E-Print Network [OSTI]

    Grant, Anthony P.

    1994-01-01

    In this paper I present the available materials on the diverse dialectal forms of the extinct Karankawa language of coastal Texas in the form of an English-Karankawa vocabulary, together with the attested sentence and text material, a transcription...

  4. Radioactive Materials Product Stewardship

    E-Print Network [OSTI]

    Radioactive Materials Product Stewardship ABackground Report for the National Dialogue...................................................................................................26 Low Level Waste (LLW) Disposal Regulations on Radioactive Materials Product Stewardship Prepared by the: Product Stewardship Institute University

  5. Geopolymer Sealing Materials

    Broader source: Energy.gov [DOE]

    DOE Geothermal Peer Review 2010 - Presentation. Project objectives: Develop and characterize field-applicable geopolymer temporary sealing materials in the laboratory and to transfer this developed material technology to geothermal drilling service companies as collaborators for field validation tests.

  6. Integrating rock mechanics issues with repository design through design process principles and methodology

    SciTech Connect (OSTI)

    Bieniawski, Z.T.

    1996-04-01

    A good designer needs not only knowledge for designing (technical know-how that is used to generate alternative design solutions) but also must have knowledge about designing (appropriate principles and systematic methodology to follow). Concepts such as {open_quotes}design for manufacture{close_quotes} or {open_quotes}concurrent engineering{close_quotes} are widely used in the industry. In the field of rock engineering, only limited attention has been paid to the design process because design of structures in rock masses presents unique challenges to the designers as a result of the uncertainties inherent in characterization of geologic media. However, a stage has now been reached where we are be able to sufficiently characterize rock masses for engineering purposes and identify the rock mechanics issues involved but are still lacking engineering design principles and methodology to maximize our design performance. This paper discusses the principles and methodology of the engineering design process directed to integrating site characterization activities with design, construction and performance of an underground repository. Using the latest information from the Yucca Mountain Project on geology, rock mechanics and starter tunnel design, the current lack of integration is pointed out and it is shown how rock mechanics issues can be effectively interwoven with repository design through a systematic design process methodology leading to improved repository performance. In essence, the design process is seen as the use of design principles within an integrating design methodology, leading to innovative problem solving. In particular, a new concept of {open_quotes}Design for Constructibility and Performance{close_quotes} is introduced. This is discussed with respect to ten rock mechanics issues identified for repository design and performance.

  7. VHTR Materials Overview

    SciTech Connect (OSTI)

    Wright, Richard [Idaho National Lab. (INL), Idaho Falls, ID (United States)

    2013-07-30

    The PowerPoint presentation was given at the DOE-NE Materials Crosscut Coordination Meeting, Tuesday, 30 July 2013.

  8. UNCLASSIFIED Institute for Materials ...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Garritt Tucker Drexel University, Philadelphia, Pennsylvania Atomistic Methods to Quantify Nanoscale Strain and Deformation Mechanisms in Nanostructured Materials Thursday, August...

  9. HIGH PERFORMANCE MACROMOLECULAR MATERIALS

    E-Print Network [OSTI]

    M. Gregory Forest. Department of Mathematics. Institute for Advanced Materials, Nanoscience & Technology. University of North Carolina at Chapel Hill.

  10. Instructions and Materials

    Broader source: Energy.gov [DOE]

    The following are 2012 Program Peer Review Meeting instructions, materials and resource links for presenters and reviewers.

  11. Materials Science & Engineering

    E-Print Network [OSTI]

    Materials Science & Engineering New paradigms in the R&D of novel multifunctional oxide and nanocarbon thin films are providing the bases for new physics, new materials science and chemistry Laboratory (ANL) during the past fifteen years. Also, the applications of these materials for a new

  12. Advanced neutron absorber materials

    DOE Patents [OSTI]

    Branagan, Daniel J. (Idaho Falls, ID); Smolik, Galen R. (Idaho Falls, ID)

    2000-01-01

    A neutron absorbing material and method utilizing rare earth elements such as gadolinium, europium and samarium to form metallic glasses and/or noble base nano/microcrystalline materials, the neutron absorbing material having a combination of superior neutron capture cross sections coupled with enhanced resistance to corrosion, oxidation and leaching.

  13. Esselen Linguistic Materials

    E-Print Network [OSTI]

    Shaul, David L.; Turner, Katherine; Collins, James D.

    1984-01-01

    The primary purpose of this paper is to make a complete list of materials known on the Esselen language available in a single place. The existing lexical material has been organized into a lexicon which is followed by phrasal and sentence materials...

  14. Materials Science & Engineering

    E-Print Network [OSTI]

    Simons, Jack

    Materials Science & Engineering The University of Utah 2014-15 Undergraduate Handbook #12;STUDYING FOR A MATERIALS SCIENCE AND ENGINEERING DEGREE Materials Science and Engineering inter-twines numerous disciplines, including chemistry, physics and engineering. It is the one discipline within the College of Engineering

  15. Tailored Porous Materials

    SciTech Connect (OSTI)

    BARTON,THOMAS J.; BULL,LUCY M.; KLEMPERER,WALTER G.; LOY,DOUGLAS A.; MCENANEY,BRIAN; MISONO,MAKOTO; MONSON,PETER A.; PEZ,GUIDO; SCHERER,GEORGE W.; VARTULI,JAMES C.; YAGHI,OMAR M.

    1999-11-09

    Tailoring of porous materials involves not only chemical synthetic techniques for tailoring microscopic properties such as pore size, pore shape, pore connectivity, and pore surface reactivity, but also materials processing techniques for tailoring the meso- and the macroscopic properties of bulk materials in the form of fibers, thin films and monoliths. These issues are addressed in the context of five specific classes of porous materials: oxide molecular sieves, porous coordination solids, porous carbons, sol-gel derived oxides, and porous heteropolyanion salts. Reviews of these specific areas are preceded by a presentation of background material and review of current theoretical approaches to adsorption phenomena. A concluding section outlines current research needs and opportunities.

  16. Simulation of water-rock interaction in the Yellowstone geothermal system using TOUGHREACT

    SciTech Connect (OSTI)

    Dobson, Patrick F.; Salah, Sonia; Spycher, Nicolas; Sonnenthal, Eric L.

    2003-04-28

    The Yellowstone geothermal system provides an ideal opportunity to test the ability of reactive transport models to simulate the chemical and hydrological effects of water-rock interaction. Previous studies of the Yellowstone geothermal system have characterized water-rock interaction through analysis of rocks and fluids obtained from both surface and downhole samples. Fluid chemistry, rock mineralogy, permeability, porosity, and thermal data obtained from the Y-8 borehole in Upper Geyser Basin were used to constrain a series of reactive transport simulations of the Yellowstone geothermal system using TOUGHREACT. Three distinct stratigraphic units were encountered in the 153.4 m deep Y-8 drill core: volcaniclastic sandstone, perlitic rhyolitic lava, and nonwelded pumiceous tuff. The main alteration phases identified in the Y-8 core samples include clay minerals, zeolites, silica polymorphs, adularia, and calcite. Temperatures observed in the Y-8 borehole increase with depth from sub-boiling conditions at the surface to a maximum of 169.8 C at a depth of 104.1 m, with near-isothermal conditions persisting down to the well bottom. 1-D models of the Y-8 core hole were constructed to simulate the observed alteration mineral assemblage given the initial rock mineralogy and observed fluid chemistry and temperatures. Preliminary simulations involving the perlitic rhyolitic lava unit are consistent with the observed alteration of rhyolitic glass to form celadonite.

  17. Simulation of water-rock interaction in the yellowstone geothermal system using TOUGHREACT

    SciTech Connect (OSTI)

    Dobson, P.F.; Salah, S.; Spycher, N.; Sonnenthal, E.

    2003-04-28

    The Yellowstone geothermal system provides an ideal opportunity to test the ability of reactive transport models to accurately simulate water-rock interaction. Previous studies of the Yellowstone geothermal system have characterized water-rock interaction through analysis of rocks and fluids obtained from both surface and downhole samples. Fluid chemistry, rock mineralogy, permeability, porosity, and thermal data obtained from the Y-8 borehole in Upper Geyser Basin were used to constrain a series of reactive transport simulations of the Yellowstone geothermal system using TOUGHREACT. Three distinct stratigraphic units were encountered in the 153.4 m deep Y-8 drill core: volcaniclastic sandstone, perlitic rhyolitic lava, and nonwelded pumiceous tuff. The main alteration phases identified in the Y-8 core samples include clay minerals, zeolites, silica polymorphs, adularia, and calcite. Temperatures observed in the Y-8 borehole increase with depth from sub-boiling conditions at the surface to a maximum of 169.8 C at a depth of 104.1 m, with near-isothermal conditions persisting down to the well bottom. 1-D models of the Y-8 core hole were constructed to determine if TOUGHREACT could accurately predict the observed alteration mineral assemblage given the initial rock mineralogy and observed fluid chemistry and temperatures. Preliminary simulations involving the perlitic rhyolitic lava unit are consistent with the observed alteration of rhyolitic glass to form celadonite.

  18. Seismic Technology Adapted to Analyzing and Developing Geothermal Systems Below Surface-Exposed High-Velocity Rocks Final Report

    SciTech Connect (OSTI)

    Hardage, Bob A; DeAngelo, Michael V; Ermolaeva, Elena; Hardage, Bob A; Remington, Randy; Sava, Diana; Wagner, Donald; Wei, Shuijion

    2013-02-28

    The objective of our research was to develop and demonstrate seismic data-acquisition and data-processing technologies that allow geothermal prospects below high-velocity rock outcrops to be evaluated. To do this, we acquired a 3-component seismic test line across an area of exposed high-velocity rocks in Brewster County, Texas, where there is high heat flow and surface conditions mimic those found at numerous geothermal prospects. Seismic contractors have not succeeded in creating good-quality seismic data in this area for companies who have acquired data for oil and gas exploitation purposes. Our test profile traversed an area where high-velocity rocks and low-velocity sediment were exposed on the surface in alternating patterns that repeated along the test line. We verified that these surface conditions cause non-ending reverberations of Love waves, Rayleigh waves, and shallow critical refractions to travel across the earth surface between the boundaries of the fast-velocity and slow-velocity material exposed on the surface. These reverberating surface waves form the high level of noise in this area that does not allow reflections from deep interfaces to be seen and utilized. Our data-acquisition method of deploying a box array of closely spaced geophones allowed us to recognize and evaluate these surface-wave noise modes regardless of the azimuth direction to the surface anomaly that backscattered the waves and caused them to return to the test-line profile. With this knowledge of the surface-wave noise, we were able to process these test-line data to create P-P and SH-SH images that were superior to those produced by a skilled seismic data-processing contractor. Compared to the P-P data acquired along the test line, the SH-SH data provided a better detection of faults and could be used to trace these faults upward to the boundaries of exposed surface rocks. We expanded our comparison of the relative value of S-wave and P-wave seismic data for geothermal applications by inserting into this report a small part of the interpretation we have done with 3C3D data across Wister geothermal field in the Imperial Valley of California. This interpretation shows that P-SV data reveal faults (and by inference, also fractures) that cannot be easily, or confidently, seen with P-P data, and that the combination of P-P and P-SV data allows VP/VS velocity ratios to be estimated across a targeted reservoir interval to show where an interval has more sandstone (the preferred reservoir facies). The conclusion reached from this investigation is that S-wave seismic technology can be invaluable to geothermal operators. Thus we developed a strong interest in understanding the direct-S modes produced by vertical-force sources, particularly vertical vibrators, because if it can be demonstrated that direct-S modes produced by vertical-force sources can be used as effectively as the direct-S modes produced by horizontal-force sources, geothermal operators can acquire direct-S data across many more prospect areas than can be done with horizontal-force sources, which presently are limited to horizontal vibrators. We include some of our preliminary work in evaluating direct-S modes produced by vertical-force sources.

  19. Numerical studies of fluid-rock interactions in Enhanced Geothermal Systems (EGS) with CO2 as working fluid

    E-Print Network [OSTI]

    Xu, Tianfu; Pruess, Karsten; Apps, John

    2008-01-01

    2006), “The Future of Geothermal Energy Impact of Enhanced2000), “A Hot Dry Rock Geothermal Energy Concept UtilizingEnergy has broadly defined Enhanced (or Engineered) Geothermal

  20. Structure of the eastern Red Rocks and Wind Ridge thrust faults, Wyoming: how a thrust fault gains displacement along strike 

    E-Print Network [OSTI]

    Huntsman, Brent Stanley

    1983-01-01

    OF FIELD MAPPING Methods . Thrust Faults . The Wind Ridge Thrust Fault System The Red Rocks Thrust Fault System CLAY MODEL STUDIES Purpose and Description Model Results DISCUSSION OF RESULTS Kinematics of the Red Rocks Thrust Fault Termination... . Kinematics of the Southern Wind Ridge Thrust Fault . . . A Conceptual Model of the Red Rocks Thrust Fault Termination Implications of the Red Rocks Fault Termination . . . . . . Page V1 V11 1X X1 X11 7 9 17 18 18 21 24 27 35 35 38 49 49...

  1. The role of eldwork in rock decay research: Case studies from the fringe Ronald I. Dorn a,

    E-Print Network [OSTI]

    Dorn, Ron

    , Geoinfomatics and Meteorology, University of Pretoria, South Africa i Department of Geography, University Scientists publishing papers on the decay of rocks hail from arche- ology, architecture, astrobiology, botany

  2. Modeling of coupled thermodynamic and geomechanical performance of underground compressed air energy storage (CAES) in lined rock caverns

    E-Print Network [OSTI]

    Rutqvist, J.

    2013-01-01

    abandonment Underground gas storage: Worldwide ExperiencesCritical pressure for gas storage in unlined rock caverns.for the Brooklyn Union gas storage cavern at JFK Airport,

  3. FY 2009 Progress Report for Lightweighting Materials - 12. Materials...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    for Lightweighting Materials - 12. Materials Crosscutting Research and Development The primary Lightweight Materials activity goal is to validate a cost-effective weight reduction...

  4. TRADITIONAL METALLURGY, NANOTECHNOLOGIES AND STRUCTURAL MATERIALS: A SORBY AWARD LECTURE

    SciTech Connect (OSTI)

    Louthan, M

    2007-07-17

    Traditional metallurgical processes are among the many ''old fashion'' practices that use nanoparticles to control the behavior of materials. Many of these practices were developed long before microscopy could resolve nanoscale features, yet the practitioners learned to manipulate and control microstructural elements that they could neither see nor identify. Furthermore, these early practitioners used that control to modify microstructures and develop desired material properties. Centuries old colored glass, ancient high strength steels and medieval organ pipes derived many of their desirable features through control of nanoparticles in their microstructures. Henry Sorby was among the first to recognize that the properties of rocks, minerals, metals and organic materials were controlled by microstructure. However, Mr. Sorby was accused of the folly of trying to study mountains with a microscope. Although he could not resolve nanoscale microstructural features, Mr. Sorby's observations revolutionized the study of materials. The importance of nanoscale microstructural elements should be emphasized, however, because the present foundation for structural materials was built by manipulating those features. That foundation currently supports several multibillion dollar industries but is not generally considered when the nanomaterials revolution is discussed. This lecture demonstrates that using nanotechnologies to control the behavior of metallic materials is almost as old as the practice of metallurgy and that many of the emergent nanomaterials technologists are walking along pathways previously paved by traditional metallurgists.

  5. Effects of heterogeneity and friction on the deformation and strength of rock

    SciTech Connect (OSTI)

    Nihei, K.T.; Myer, L.R.; Liu, Z.; Cook, N.G.W. [Lawrence Berkeley Lab., CA (United States); Kemeny, J.M. [Univ., of Arizona, Tucson, AZ (United States). Dept. of Mineralogy and Geological Engineering

    1994-03-01

    Experimental observations of the evolution of damage in rocks during compressive loading indicate that macroscopic failure occurs predominantly by extensile crack growth parallel or subparallel to the maximum principal stress. Extensile microcracks initiate at grain boundaries and open pores by a variety of micromechanical processes which may include grain bending, Brazilian type fracture and grain boundary sliding. Microstructural heterogeneity in grain size, strength and shape determines the magnitude of the local tensile stresses which produce extensile microcracking and the stability with which these microcracks coalesce to form macrocracks. Friction at grain boundaries and between the surfaces of microcracks reduces the strain energy available for extensile crack growth and increases the stability of microcrack growth. In clastic rocks, frictional forces may improve the conditions for extensile microcrack growth by constraining the amount of sliding and rotation of individual grains. Micromechanical models are used to investigate the effects of heterogeneity and friction on the deformation and strength of crystalline and clastic rocks.

  6. Rock physics and geophysics for unconventional resource, multi-component seismic, quantitative interpretation

    E-Print Network [OSTI]

    Glinsky, Michael E; Sassen, Doug; Rael, Howard; Chen, Jinsong

    2013-01-01

    An extension of a previously developed, rock physics, model is made that quantifies the relationship between the ductile fraction of a brittle/ductile binary mixture and the isotropic seismic reflection response. Making a weak scattering (Born) approximation and plane wave (eikonal) approximation, with a subsequent ordering according to the smallness of the angle of incidence, a linear singular value decomposition analysis is done to understand the stack weightings, number of stacks, and the type of stacks that will optimally estimate the two fundamental rock physics parameters. It is concluded that the full PP stack and the "full" PS stack are the two optimal stacks needed to estimate the two rock physics parameters. They dominate over both the second order AVO "gradient" stack and the higher order (4th order) PP stack.

  7. Organic geochemistry and correlation of Paleozoic source rocks and Trenton crude oils, Indiana

    SciTech Connect (OSTI)

    Guthrie, J. )

    1989-08-01

    Shale samples from four cores of the New Albany and Antrim Shales (Devonian) and from six cores of the Maquoketa Group (Ordovician), representing a broad geographic area of Indiana, have been analyzed for total organic carbon, total sulfur, pyrolysis yield (Rock-Eval), bitumen content, and illite crystallinity data. These data indicate that the New Albany, Antrim, and Maquoketa shales contain a sufficient quantity and quality of organic matter to be good petroleum source rocks. Bitumen ratios, Rock-Eval yields, gas chromatography of saturated hydrocarbons, and illite crystallinity data show that the Maquoketa shales have reached a higher level of thermal maturity than the New Albany and Antrim shales. The level of thermal maturity of the Maquoketa shales suggested a maximum burial depth considerably greater than the present depth.

  8. Revegetation/rock cover for stabilization of inactive uranium mill tailings disposal sites

    SciTech Connect (OSTI)

    Beedlow, P.A.; McShane, M.C.; Cadwell, L.L.

    1982-07-01

    Pacific Northwest Laboratory is developing design and performance guidelines for surface stabilization of inactive uranium mill tailings. In this work, vegetation and rock covers are being evaluated for maintaining long-term integrity of impoundment systems. Methods are being developed to estimate erosion rates associated with rock and/or vegetation covers, and to determine the effects of surface treatments on soil moisture. Interactions between surface treatments and barriers (radon and biological) are being studied as well. The product will be a set of guidelines to aid in designing surface covers. This report presents the status of this program and a discussion of considerations pertinent to the application of surface covers to tailings. Test plots located in Grand Junction, Colorado and Waterflow, New Mexico are being used to study: (1) the interactions between vegetation and radon and biological barriers, (2) the effects of surface covers on soil moisture, and (3) the effects of rock covers on vegetation.

  9. Cesium in rock-water interaction, Yellowstone National Park. [Abstract only

    SciTech Connect (OSTI)

    Thompson, J.M.; Keith, T.E.C.

    1983-03-01

    Chemical analyses of thermal waters from research drill holes and nearby hot springs and geysers in Upper and Lower Geyser Basins indicate that Cs may be a reactive ion. A nearly constant Cs:Cl is found for four wells drilled in Lower Geyser Basin and for some hot spring and geysers. It is inferred from this plot that points falling below the trend indicate Cs depleted waters. A plot of Cs:CHO/sub 3//Cl, another measure of rock-water interaction, also indicates Cs removal from the waters. These data correlate well with a parallel study of chemistry and mineralogy of hydrothermally altered rocks from the drill holes which show that the rocks involved in hydrothermal rock-water reactions are vitrophyric rhyolite lava flows and pumiceous tuff overlain by obsidian-rich sands and gravels. Nearly 55 m of such a section from well Y-8 has been hydrothermally altered into alternating intervals consisting of analcime - quartz - clay (smectite, celadonite) or clinoptilolite - ..cap alpha..-cristobalite - smectite. Whole rock analyses of randomly selected samples of these intervals from several wells have Cs contents somewhat higher than those of the unaltered host rhyolite. However, the Cs content of the analcime - quartz - clay intervals is as much as 700 times higher than that of the host rock. Analyses of mineral separates show that analcime, containing as much as 4700 ppM Cs, is more enriched in Cs than any other mineral. Examination of experimental data suggests that Cs is incorporated into the analcime structure during crystallization. Clinoptilolite, which has been shown to readily exchange Cs, is only slightly enriched in this system.

  10. MULTI-ATTRIBUTE SEISMIC/ROCK PHYSICS APPROACH TO CHARACTERIZING FRACTURED RESERVOIRS

    SciTech Connect (OSTI)

    Gary Mavko

    2000-10-01

    This project consists of three key interrelated Phases, each focusing on the central issue of imaging and quantifying fractured reservoirs, through improved integration of the principles of rock physics, geology, and seismic wave propagation. This report summarizes the results of Phase I of the project. The key to successful development of low permeability reservoirs lies in reliably characterizing fractures. Fractures play a crucial role in controlling almost all of the fluid transport in tight reservoirs. Current seismic methods to characterize fractures depend on various anisotropic wave propagation signatures that can arise from aligned fractures. We are pursuing an integrated study that relates to high-resolution seismic images of natural fractures to the rock parameters that control the storage and mobility of fluids. Our goal is to go beyond the current state-of-the art to develop and demonstrate next generation methodologies for detecting and quantitatively characterizing fracture zones using seismic measurements. Our study incorporates 3 key elements: (1) Theoretical rock physics studies of the anisotropic viscoelastic signatures of fractured rocks, including up scaling analysis and rock-fluid interactions to define the factors relating fractures in the lab and in the field. (2) Modeling of optimal seismic attributes, including offset and azimuth dependence of travel time, amplitude, impedance and spectral signatures of anisotropic fractured rocks. We will quantify the information content of combinations of seismic attributes, and the impact of multi-attribute analyses in reducing uncertainty in fracture interpretations. (3) Integration and interpretation of seismic, well log, and laboratory data, incorporating field geologic fracture characterization and the theoretical results of items 1 and 2 above. The focal point for this project is the demonstration of these methodologies in the Marathon Oil Company Yates Field in West Texas.

  11. An asixymmetric diffusion experiment for the determination of diffusion and sorption coefficients of rock samples

    SciTech Connect (OSTI)

    Takeda, M.; Hiratsuka, T.; Ito, K.; Finsterle, S.

    2011-02-01

    Diffusion anisotropy is a critical property in predicting migration of substances in sedimentary formations with very low permeability. The diffusion anisotropy of sedimentary rocks has been evaluated mainly from laboratory diffusion experiments, in which the directional diffusivities are separately estimated by through-diffusion experiments using different rock samples, or concurrently by in-diffusion experiments in which only the tracer profile in a rock block is measured. To estimate the diffusion anisotropy from a single rock sample, this study proposes an axisymmetric diffusion test, in which tracer diffuses between a cylindrical rock sample and a surrounding solution reservoir. The tracer diffusion between the sample and reservoir can be monitored from the reservoir tracer concentrations, and the tracer profile could also be obtained after dismantling the sample. Semi-analytical solutions are derived for tracer concentrations in both the reservoir and sample, accounting for an anisotropic diffusion tensor of rank two as well as the dilution effects from sampling and replacement of reservoir solution. The transient and steady-state analyses were examined experimentally and numerically for different experimental configurations, but without the need for tracer profiling. These experimental configurations are tested for in- and out-diffusion experiments using Koetoi and Wakkanai mudstones and Shirahama sandstone, and are scrutinized by a numerical approach to identify favorable conditions for parameter estimation. The analysis reveals the difficulty in estimating diffusion anisotropy; test configurations are proposed for enhanced identifiability of diffusion anisotropy. Moreover, it is demonstrated that the axisymmetric diffusion test is efficient in obtaining the sorption parameter from both steady-state and transient data, and in determining the effective diffusion coefficient if isotropic diffusion is assumed. Moreover, measuring reservoir concentrations in an axisymmetric diffusion experiment coupled with tracer profiling may be a promising approach to estimate of diffusion anisotropy of sedimentary rocks.

  12. Petroleum potential of lower and middle Paleozoic rocks in Nebraska portion of Mid-Continent

    SciTech Connect (OSTI)

    Carlson, M.P. )

    1989-08-01

    Central North America during the Paleozoic was characterized by northern (Williston) and southern (Anadarko) depositional regimes separated by a stable Transcontinental arch. Nebraska lies on the southern flank of this arch and contains the northern zero edges of the lower and middle Paleozoic rocks of the southern regime. Most of these rocks are secondary dolomites with zones of excellent intercrystalline porosity. The Reagan-LaMotte Sandstones and the overlying Arbuckle dolomites are overlapped by Middle Ordovician rocks toward the Transcontinental arch. Rocks equivalent to the Simpson consist of a basal sand (St. Peter) and overlying interbedded gray-green shales and dolomitic limestones. An uppermost shale facies is present in the Upper Ordovician (Viola-Maquoketa) eastward and southward across Nebraska. The dolomite facies extends northward into the Williston basin. The Silurian dolomites, originally more widely deposited, are overlapped by Devonian dolomites in southeastern Nebraska. Upper Devonian rocks exhibit a regional facies change from carbonate to green-gray shale to black shale southeastward across the Mid-Continent. Mississippian carbonates overlap the Devonian westward and northward across the Transcontinental arch. Pennsylvanian uplift and erosion were widespread, producing numerous stratigraphic traps. Sands related to the basal Pennsylvanian unconformity produce along the Cambridge arch. Arbuckle, Simpson, Viola, and Hunton production is present in the Forest City basin and along the Central Kansas uplift. Although source rocks are scarce and the maturation is marginal, current theories of long-distance oil migration encourage exploration in the extensive lower and middle Paleozoic reservoirs in this portion of the Mid-Continent.

  13. Paint Rock and southwest Paint Rock fields, Concho County, Texas: Strawn analogs of modern island carbonate facies of Ambergris Cay, Belize

    SciTech Connect (OSTI)

    Reid, A.M.; Mazzullo, S.J.

    1987-02-01

    Lower Strawn (Desmoinesian Goen Limestone) reservoirs at Paint Rock and Southwest Paint Rock fields are a complex of carbonate and associated facies interpreted as having been deposited in various environments on and around large, emergent islands on shallow carbonate shelves. The origin and geometries of the component lithofacies in these fields, and their reservoir diagenetic histories, are similar to those presently accumulating on Ambergris Cay, a linear island complex on the northern shelf of Belize. Paint Rock field originated as a narrow, elongate Chaetetes reef trend that formed the foundation on which the overlying island facies were deposited. As on Ambergris Cay, these reef limestones developed extensive porosity during postdepositional subaerial exposure due to meteoric leaching. In contrast, Southwest Paint Rock field is cored by older island deposits rather than reef limestones. With ensuing stillstand or subsequent sea level rise, beach grainstones were deposited along the windward and leeward margins of the foundation highs in these fields. Tight lagoonal micrites and coals (peat-swamp facies) comprise the inner island facies, and are locally associated with porous supratidal dolomites. These island complexes are transected locally by tidal channels that are filled with nonporous micrites. Repeated sea level fluctuations during the history of these fields resulted in a characteristic cyclic stratigraphy of stacked island facies and reservoirs. The reservoirs in the field are developed in the bedrock or older island cores, as well as in the overlying beach facies and supratidal dolomites. These fields are mappable as linear stratigraphic traps with low-relief closure, and are readily identified by subsurface geologic and facies analyses. Similar shelf island-type fields analogous to these strawn and Holocene Belizean examples are found throughout the Midland basin and Eastern shelf.

  14. Investigation of Coupled Processes and Impact of High Temperature Limits in Argillite Rock

    SciTech Connect (OSTI)

    Zheng, Liange; Rutqvist, Jonny; Kim, Kunhwi; Houseworth, Jim

    2015-07-01

    The focus of research within the UFD Campaign is on repository-induced interactions that may affect the key safety characteristics of an argillaceous rock. These include thermal-hydrologicalmechanical-chemical (THMC) process interactions that occur as a result of repository construction and waste emplacement. Some of the key questions addressed in this report include the development of fracturing in the excavation damaged zone (EDZ) and THMC effects on the near-field argillaceous rock and buffer minerals and petrophysical characteristics, particularly the impacts of induced temperature rise caused by waste heat.

  15. The interaction of two closely spaced cracks - rock models and computer simulations 

    E-Print Network [OSTI]

    Lin, Peng

    1990-01-01

    fractures 77 CHAPTER I INTRODUCTION It has been know for some time that brittle crystalline rock fails at stresses well below their theoretical strengths. This can be attributed to flaws in the rock such as fractures which may occur closely together... are generated from precut tips and diverge away from the precuts and curve to the loading direction; the other is called h fractures which are at high angle to the loading direction and bounded within z fractures. The cross section which is cut in the middle...

  16. The geochemistry and petrogenesis of the Tertiary igneous rocks of the Eagle Mountains, Van Horn, Texas 

    E-Print Network [OSTI]

    Nelson, Ronald Alan

    1972-01-01

    , 0 1, 9 4h 18 IR 1. 8 1. 5 '1. 4 5p 0 p Sd 8101214 Ca 'ro Fig12re 13. Hb/Sr vs. Cap plot for the rocks of the Eagle Mountains. 39 2. 1 2. 0 ~ VI' 1. 9 1. 7 ep sd O ~ Na/ K Figure l4. Rb/Sr vs. Ma/K plot for the rooks... Page 3 ~ 5. 6. 7 ~ 8. Map of a portion of West Texas showing the location of' the Eagle Mountains. . . 4 The Cretaceous section of the Eagle Mountains after Underwood. (1962) . . . . 8 Distribution of igneous rock and sample locations...

  17. The effects of texture and composition on the mechanical behavior of experimentally deformed carbonate rocks 

    E-Print Network [OSTI]

    Hugman, Robert Harvey Harold

    1978-01-01

    behavior in unconfined tests and large increases in ultimate strength with increases in confining pressure to 100 MPa (Fig. 1, a, e). These "crystalline" rocks are moderately ductile to ductile at 100 MPa confining pressure. A degree of work hardening... Limestone (67 0 microcrystalline carbonate), and Madison H61-16 Lime- stone (54 $ micrite) are included in this category (Fig. 1, b, d, f), All these rocks are strong in unconfined tests, and stronger at 50 and 100 MPa confining pressure then Yule Marble...

  18. An experimental investigation of leading edge vortical flow about a delta wing during wing rock 

    E-Print Network [OSTI]

    Nelson, Michael Denis

    1991-01-01

    moment coefficient in water and wind tunnel. , Fig. 4 Wing rock time history for et=40' (No initial breakdown). . . . . . , , , Fig, 5 Spanwise and normal vortex positions at x/c = 0. 95 (et=30'). . . . . . . Fig. 6 Free-to-roll test apparatus. Fig. 7... G 2 4 6 2 10 12 14 16 18 2G T)HE (aac. ) Fig. 4 Wing rock time history for a=40' (No initial breakdown). ' 5 quantified with respect to roll angle at the 95% chord station of the modeL Their model was mounted on a free-to-roll air bearing...

  19. Who are Climbing the Walls? An Exploration of the Social World of Indoor Rock Climbing 

    E-Print Network [OSTI]

    Kurten, Jason Henry

    2011-02-22

    .B.A., Texas A&M University Co-Chairs of Advisory Committee: Dr. C. Scott Shafer Dr. David Scot This study is an exploratory look at the social world of indoor rock climbers, specifically, those at Texas A&M University. A... ARE CLIMBING THE WALLS? AN EXPLORATION OF THE SOCIAL WORLD OF INDOOR ROCK CLIMBING A Thesis by JASON HENRY KURTEN Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree...

  20. The effects of heat conduction on the vaporization of liquid invading superheated permeable rock

    SciTech Connect (OSTI)

    Woods, Andrew, W.; Fitzgerald, Shaun D.

    1996-01-24

    We examine the role of conductive and convective heat transfer in the vaporization of liquid as it slowly invades a superheated permeable rock. For very slow migration, virtually all of the liquid vaporizes. As the liquid supply rate increases beyond the rate of heat transfer by thermal conduction, a decreasing fraction of the liquid can vaporize. Indeed, for sufficiently high flow rates, the fraction vaporizing depends solely on the superheat of the rock, and any heat transfer from the superheated region is negligible. These results complement earlier studies of vaporization under very high injection rates, in which case the dynamic vapour pressure reduces the mass fraction vaporizing to very small values.

  1. Deformation Mechanisms in Nanocrystalline Materials

    E-Print Network [OSTI]

    Mohamed, Farghalli A.; Yang, Heather

    2010-01-01

    2010 METALLURGICAL AND MATERIALS TRANSACTIONS A 47. F.A.12. METALLURGICAL AND MATERIALS TRANSACTIONS A VOLUME 41A,of Slip: Progress in Materials Science, Pergamon Press,

  2. Vibrational Damping of Composite Materials

    E-Print Network [OSTI]

    Biggerstaff, Janet M.

    2006-01-01

    Smart Structures and Materials, 3989:531- 538. Biggerstaff,2002. “Electroviscoelastic Materials As Active Dampers”,Smart Structures and Materials, 4695:345-350. Biggerstaff,

  3. Sandia Energy - Wavelength Conversion Materials

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Wavelength Conversion Materials Home Energy Research EFRCs Solid-State Lighting Science EFRC Overview Wavelength Conversion Materials Wavelength Conversion MaterialsAlyssa...

  4. ANS materials databook

    SciTech Connect (OSTI)

    Marchbanks, M.F.

    1995-08-01

    Technical development in the Advanced Neutron Source (ANS) project is dynamic, and a continuously updated information source is necessary to provide readily usable materials data to the designer, analyst, and materials engineer. The Advanced Neutron Source Materials Databook (AMBK) is being developed as a part of the Advanced Neutron Source Materials Information System (AMIS). Its purpose is to provide urgently needed data on a quick-turnaround support basis for those design applications whose schedules demand immediate estimates of material properties. In addition to the need for quick materials information, there is a need for consistent application of data throughout the ANS Program, especially where only limited data exist. The AMBK is being developed to fill this need as well. It is the forerunner to the Advanced Neutron Source Materials Handbook (AMHB). The AMHB, as reviewed and approved by the ANS review process, will serve as a common authoritative source of materials data in support of the ANS Project. It will furnish documented evidence of the materials data used in the design and construction of the ANS system and will serve as a quality record during any review process whose objective is to establish the safety level of the ANS complex. The information in the AMBK and AMHB is also provided in electronic form in a dial-up computer database known as the ANS Materials Database (AMDB). A single consensus source of materials information prepared and used by all national program participants has several advantages. Overlapping requirements and data needs of various sub-projects and subcontractors can be met by a single document which is continuously revised. Preliminary and final safety analysis reports, stress analysis reports, equipment specifications, materials service reports, and many other project-related documents can be substantially reduced in size and scope by appropriate reference to a single data source.

  5. Absolute nuclear material assay

    DOE Patents [OSTI]

    Prasad, Manoj K. (Pleasanton, CA); Snyderman, Neal J. (Berkeley, CA); Rowland, Mark S. (Alamo, CA)

    2012-05-15

    A method of absolute nuclear material assay of an unknown source comprising counting neutrons from the unknown source and providing an absolute nuclear material assay utilizing a model to optimally compare to the measured count distributions. In one embodiment, the step of providing an absolute nuclear material assay comprises utilizing a random sampling of analytically computed fission chain distributions to generate a continuous time-evolving sequence of event-counts by spreading the fission chain distribution in time.

  6. Absolute nuclear material assay

    DOE Patents [OSTI]

    Prasad, Manoj K. (Pleasanton, CA); Snyderman, Neal J. (Berkeley, CA); Rowland, Mark S. (Alamo, CA)

    2010-07-13

    A method of absolute nuclear material assay of an unknown source comprising counting neutrons from the unknown source and providing an absolute nuclear material assay utilizing a model to optimally compare to the measured count distributions. In one embodiment, the step of providing an absolute nuclear material assay comprises utilizing a random sampling of analytically computed fission chain distributions to generate a continuous time-evolving sequence of event-counts by spreading the fission chain distribution in time.

  7. Nuclear Materials Science

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    comprises the core actinide materials science and metallurgical capability within the nuclear weapons production and surveillance communities. Contact Us Group Leader David...

  8. Nanoscale Materials in Medicine

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Nanoparticle Technology for Drug Delivery. Gao, X., et al. 2002. Journal of Biomedical Optics 7: 532-537. Ferromagnetic materials become superparamagnetic below 20 nm Size...

  9. Webinar: Materials Genome Initative

    Broader source: Energy.gov [DOE]

    Audio recording and text version of the Fuel Cell Technologies Office webinar titled "Materials Genome Initiative," originally presented on December 2, 2014.

  10. Computational Chemical Materials Engineering

    E-Print Network [OSTI]

    . Thermodynamic and micromechanical analysis #12;Home Polyimide-nanotube composites for electro-active materials · (ß ­ CN)APB/ODPA Polyimide · Piezoelectric polyimide · Exceptional thermal, mechanical

  11. Fluorinated elastomeric materials

    DOE Patents [OSTI]

    Lagow, Richard J. (6204 Shadow Mountain, Austin, TX 78731); Dumitru, Earl T. (10116 Aspen St., Austin, TX 78758)

    1986-11-04

    This invention relates to a method of making perfluorinated elastomeric materials, and to materials made by such methods. In the full synthetic scheme, a partially fluorinated polymeric compound, with moieties to prevent crystallization, is created. It is then crosslinked to a desired degree, then perfluorinated. Various intermediate materials, such as partially fluorinated crosslinked polymers, have useful properties, and are or may become commercially available. One embodiment of this invention therefore relates to perfluorination of a selected partially fluorinated, crosslinked material, which is one step of the full synthetic scheme.

  12. Fluorinated elastomeric materials

    DOE Patents [OSTI]

    Lagow, Richard J. (6204 Shadow Mountain, Austin, TX 78731); Dumitru, Earl T. (10116 Aspen St., Austin, TX 78758)

    1990-02-13

    This invention relates to a method of making perfluorinated elastomeric materials, and to materials made by such methods. In the full synthetic scheme, a partially fluorinated polymeric compound, with moieties to prevent crystallization, is created. It is then crosslinked to a desired degree, then perfluorinated. Various intermediate materials, such as partially fluorinated crosslinked polymers, have useful properties, and are or may become commercially available. One embodiment of this invention therefore relates to perfluorination of a selected partially fluorinated, crosslinked material, which is one step of the full synthetic scheme.

  13. Radiation Safety Training Materials

    Broader source: Energy.gov [DOE]

    The following Handbooks and Standard provide recommended hazard specific training material for radiological workers at DOE facilities and for various activities.

  14. Radioactive Material Transportation Practices

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2002-09-23

    Establishes standard transportation practices for Departmental programs to use in planning and executing offsite shipments of radioactive materials including radioactive waste. Does not cancel other directives.

  15. Management of Nuclear Materials

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2009-08-17

    To establish requirements for the lifecycle management of DOE owned and/or managed accountable nuclear materials. Cancels DOE O 5660.1B.

  16. Critical Materials Workshop

    Broader source: Energy.gov (indexed) [DOE]

    Critical Materials Workshop U.S. Department of Energy April 3, 2012 eere.energy.gov Dr. Leo Christodoulou Program Manager Advanced Manufacturing Office Energy Efficiency and...

  17. Next Generation Materials:

    Office of Environmental Management (EM)

    databases for ICME Surface treatments User facility for remanufactured parts testing; lower-cost coating materials Low-cost laser processing; high accuracy non-planar surface...

  18. Phase Change Material Tower

    Office of Environmental Management (EM)

    transfer of pulverized coal Assortment of available fabrication methods (shrink fit, adhesive, casting) & liner materials (i.e. alumina, SiC, etc.) Pyrotek molten metal transfer...

  19. Composite of refractory material

    DOE Patents [OSTI]

    Holcombe, C.E.; Morrow, M.S.

    1994-07-19

    A composite refractory material composition comprises a boron carbide matrix and minor constituents of yttrium-boron-oxygen-carbon phases uniformly distributed throughout the boron carbide matrix.

  20. Composite of refractory material

    DOE Patents [OSTI]

    Holcombe, Cressie E. (Knoxville, TN); Morrow, Marvin S. (Kingston, TN)

    1994-01-01

    A composite refractory material composition comprises a boron carbide matrix and minor constituents of yttrium-boron-oxygen-carbon phases uniformly distributed throughout the boron carbide matrix.