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Sample records for iboe venezuelan merey

  1. Ibo Matthews

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

    Ibo Matthews A Broadening Career in Science Ibo Matthews Ibo Matthews With a background in optics and microscopy and a passion for research, Manyalibo (Ibo) Matthews was a natural fit for NIF when he came to work at LLNL in 2006. But his love of science wasn't always plain to see when he was a child. Matthews grew up in Berkeley, California, after his family moved to the West in the 1960s. His uncle was a scientist, but it was one of his high school teachers, Mr. Hubbard, who really introduced

  2. untitled

    U.S. Energy Information Administration (EIA) Indexed Site

    Mayan Nigerian Qua Iboe Venezuelan Merey 1983 Average ... 24.54 - 23.99 - - 1984 Average ... 24.70 - 25.35 - - 1985 Average ... 23.79 - 24.23 - - 1986...

  3. untitled

    Annual Energy Outlook [U.S. Energy Information Administration (EIA)]

    F.O.B. a Costs of Imported Crude Oil for Selected Crude Streams (Dollars per Barrel) Year Quarter Month Canadian Lloydminster Iraqi Basrah Light Mexican Mayan Nigerian Qua Iboe Venezuelan Merey 1983 Average .......... 24.54 - 23.99 - - 1984 Average .......... 24.70 - 25.35 - - 1985 Average .......... 23.79 - 24.23 - - 1986 Average .......... 12.77 - 10.93 - - 1987 Average .......... 15.12 - 15.72 - - 1988 Average .......... 11.28 - 11.26 - - 1989 Average .......... W - 14.71 - - 1990 Average

  4. Petroleum Marketing Monthly

    Gasoline and Diesel Fuel Update (EIA)

    F.O.B.[a] costs of imported crude oil for selected crude streams dollars per barrel Year quarter month Canadian Lloydminster Iraqi Basrah Light Mexican Mayan Nigerian Qua Iboe Venezuelan Merey 1995 14.44 - 14.37 - - 1996 17.14 - 17.43 - - 1997 14.29 - 14.97 - - 1998 9.18 - 8.75 - - 1999 15.19 - 14.20 - - 2000 22.94 - 23.31 - - 2001 16.77 - 16.83 - - 2002 20.79 - 20.79 - - 2003 W - 24.14 - - 2004 29.31 - 30.11 - - 2005 35.13 - 40.69 - - 2006 44.55 - 51.29 - - 2007 48.54 - 59.96 - - 2008 79.33 -

  5. Impacts of the Venezuelan Crude Oil Production Loss

    Reports and Publications (EIA)

    2003-01-01

    This assessment of the Venezuelan petroleum loss examines two areas. The first part of the analysis focuses on the impact of the loss of Venezuelan crude production on crude oil supply for U.S. refiners who normally run a significant fraction of Venezuelan crude oil. The second part of the analysis looks at the impact of the Venezuelan production loss on crude markets in general, with particular emphasis on crude oil imports, refinery crude oil throughput levels, stock levels, and the changes in price differences between light and heavy crude oils.

  6. Venezuelan equine encephalitis virus entry mechanism requires late endosome formation and resists cell membrane cholesterol depletion

    SciTech Connect (OSTI)

    Kolokoltsov, Andrey A.; Fleming, Elisa H.; Davey, Robert A. . E-mail: radavey@utmb.edu

    2006-04-10

    Virus envelope proteins determine receptor utilization and host range. The choice of receptor not only permits specific targeting of cells that express it, but also directs the virus into specific endosomal trafficking pathways. Disrupting trafficking can result in loss of virus infectivity due to redirection of virions to non-productive pathways. Identification of the pathway or pathways used by a virus is, thus, important in understanding virus pathogenesis mechanisms and for developing new treatment strategies. Most of our understanding of alphavirus entry has focused on the Old World alphaviruses, such as Sindbis and Semliki Forest virus. In comparison, very little is known about the entry route taken by more pathogenic New World alphaviruses. Here, we use a novel contents mixing assay to identify the cellular requirements for entry of a New World alphavirus, Venezuelan equine encephalitis virus (VEEV). Expression of dominant negative forms of key endosomal trafficking genes shows that VEEV must access clathrin-dependent endocytic vesicles for membrane fusion to occur. Unexpectedly, the exit point is different from Old World alphaviruses that leave from early endosomes. Instead, VEEV also requires functional late endosomes. Furthermore, unlike the Old World viruses, VEEV entry is insensitive to cholesterol sequestration from cell membranes and may reflect a need to access an endocytic compartment that lacks cholesterol. This indicates fundamental differences in the entry route taken by VEEV compared to Old World alphaviruses.

  7. Geology reinterpretation of an inactive old field-Mata 3, Venezuelan East Basin-using computer methods

    SciTech Connect (OSTI)

    Rodriguez, O.; Rivero, C.; Abud, J.

    1996-08-01

    Nowadays to find a new oil field is a very dificult task that the petroleum people know very well; therefore the reactivation of an old oil field that had important production is the best way to increase the economic benefits for the Corporation and for the country in general. In this paper, the most important point was the Geology Study regarding the reopening of the Mata-3 oil field, which ceased to be active 15 years ago, after producing 30 mmbls of light oil. There are 30 prospective sands but only 3 of them have produced 70% of the primary production. Thus, the principal objectives were the S2, S3, 4 sands of Oficina Formation (Venezuelan East Basin) in 476 wells located in this area. The following computer systems that were available to us: GIPSIE System, Vax (Intergraph Co.); PMSE System, Vax (Intergraph Co.); CPS-3 System, Unix (Radian Co.); and SIGEMAP System PC (Corpoven, S.A.). All of them assist in the different tasks that must be done by the geologists working in the interpretation area. In the end, we recommended 40 wells to workover (2 wells/year for 20 years) and thereby to increase the POI (petroleum in situ) and increase the reserves by 13.4 mmbls of fight oil, important commercial production. The estimate of the total investment is about $2 million (340 mmBs.).

  8. X:\\L6046\\Data_Publication\\Pma\\current\\ventura\\pma.vp

    U.S. Energy Information Administration (EIA) Indexed Site

    Nigerian Bonny Light Nigerian Forcados Blend Saudi Arabian Light Saudi Arabian Medium United Kingdom Brent Venezuelan Furrial Venezuelan Leona 1978 Average ... 15.04 -...

  9. untitled

    U.S. Energy Information Administration (EIA) Indexed Site

    Nigerian Bonny Light Nigerian Forcados Blend Saudi Arabian Light Saudi Arabian Medium United Kingdom Brent Venezuelan Furrial Venezuelan Leona 1978 Average ... 15.04 -...

  10. Table 30. Landed Costs of Imported Crude Oil for Selected Crude...

    U.S. Energy Information Administration (EIA) Indexed Site

    Nigerian Bonny Light Nigerian Forcados Blend Saudi Arabian Light Saudi Arabian Medium United Kingdom Brent Venezuelan Furrial Venezuelan Leona 1978 Average ... 15.04 -...

  11. People Profiles

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

    People Profiles Featured Profile Hye-Sook Park Pursuing a challenging-and rewarding-career Read More ยป Tanza Lewis Tanza Lewis Jamie King Jamie King Lisa Burrows Lisa Burrows Jeremy Huckins Jeremy Huckins Ibo Matthews Ibo Matthews Peter Thelin Peter Thelin Susanna Reyes Susana Reyes Jerry Britten Jerry Britten Reggie Drachenberg Reggie Drachenberg Beth Dzenitis Beth Dzenitis Rebecca Dylla-Spears Rebecca Dylla-Spears John Heebner John Heebner Terry Land Terry Land Zhi Liao Zhi Liao Roark Marsh

  12. Assessment of science-related environmental issues among Venezuelan students, with comparison to United States Student Data

    SciTech Connect (OSTI)

    Campos-Arredondo, O.D.J.

    1985-01-01

    This study is a comparative investigation of the current level of understanding of science-related environmental issues of students in the United States and Venezuela. Major facets of the study include the following aspects. The principal science-related environmental issues included in environmental curriculum programs in the United States and Venezuela were identified from school curriculum-programs, dissertations, environmental studies of the National Association of Environmental Education in the United States, and the Memoria y Cuenta (Memoirs and Accounts) of the ministries of Education and Environment in Venezuela. The National Assessment of Educational Progress (NAEP) test items pertaining to science-related environmental issues administered to representative United States' students in 1981-1982, were subsequently translated and administered to comparable students in Venezuela, in 1984.

  13. From CO2 to Methanol via Novel Nanocatalysts

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

    ... Research funding: Venezuelan Institute of Petroleum Technology (Intevep), Spanish Ministry of Economy and Finance, European Regional Development Fund, and U.S. Department of Energy ...

  14. This Week In Petroleum Printer-Friendly Version

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

    the feeling was that at some point Venezuelan production would begin to increase and the crisis would dissipate. But this year, it is difficult to see what might turn the market...

  15. This Week In Petroleum Printer-Friendly Version

    Annual Energy Outlook [U.S. Energy Information Administration (EIA)]

    Data Begin to Reflect Venezuelan Impacts Since the beginning of the general strike in Venezuela, the fourth-largest source of U.S. oil imports, during the first week in December,...

  16. This Week In Petroleum Printer-Friendly Version

    Gasoline and Diesel Fuel Update (EIA)

    oil imports from Saudi Arabia increased sharply, along with crude oil imports from Nigeria. Venezuelan crude oil imports, for the second week in a row, continue on a path...

  17. Venezuela: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    in the country has fallen, while domestic consumption has risen, causing a decline in net oil exports. EIA estimates the Venezuelan net exports fell again in 2010 to 1.59...

  18. World's largest single crystal of gold verified by Los Alamos instruments

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

    Los Alamos verifies largest single gold crystal World's largest single crystal of gold verified by Los Alamos instruments Using Lujan Center's HIPPO instrument, researchers probed the specimen with neutrons to gather critical information December 22, 2014 World's largest single crystal of gold verified by Los Alamos instruments Neutron diffraction data collected on the single-crystal diffraction (SCD) instrument at the Lujan Center, from the Venezuelan gold sample, indicate that the sample is a

  19. A global perspective on energy markets and economic integration.

    SciTech Connect (OSTI)

    Baker, Arnold Barry

    2006-04-01

    What will be the effect of Iraqi domestic instability on Iraqi oil production Negotiations for Iranian nuclear technology on Iranian oil supplies Saudi commitment to expanded oil production President Putin's policies on Russian oil and natural gas supplies President Chavez's policies on Venezuelan oil supplies Instability in Nigeria Higher oil prices on world economic growth Effect of economic growth on oil demand in China, India, U.S., etc. Higher oil prices on non-OPEC oil supplies

  20. World's largest single crystal of gold verified at Los Alamos

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

    World's largest single crystal of gold verified at Los Alamos World's largest single crystal of gold verified at Los Alamos The SCD instrument is used to determine the periodic atomic arrangement or crystal structure of single crystals, both natural and synthetic. April 7, 2014 Neutron diffraction data collected on the single-crystal diffraction (SCD) instrument at the Lujan Center, from the Venezuelan gold sample, indicate that the sample is a single crystal. Neutron diffraction data collected

  1. Short Term Energy Outlook, March 2003

    Gasoline and Diesel Fuel Update (EIA)

    3 1 Short-Term Energy Outlook March 2003 Overview World Oil Markets. February crude oil prices moved higher than expected pushed by fears of a war in Iraq, low inventories, slow recovery in Venezuelan exports, continued cold weather and sharply higher natural gas prices in the United States. West Texas Intermediate prices averaged close to $36 for the month (Figure 1), a level not seen since October 1990. Oil inventories continued lower through the month resulting in a cumulative reduction in

  2. Summer 2003 Motor Gasoline Outlook.doc

    Gasoline and Diesel Fuel Update (EIA)

    3 1 Short-Term Energy Outlook April 2003 Summer 2003 Motor Gasoline Outlook Summary For the upcoming summer season (April to September 2003), high crude oil costs and other factors are expected to yield average retail motor gasoline prices higher than those of last year. Current crude oil prices reflect a substantial uncertainty premium due to concerns about the current conflict in the Persian Gulf, lingering questions about whether Venezuelan oil production will recover to near pre-strike

  3. Dr. Andrew Russo

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

    Disabling a Killer Virus The CAMD Protein Crystallography beamline was used to determine the structure of a protein that the Venezuelan Equine Encephalitis (VEE) virus requires for replication. VEE is a mosquito-borne virus found in Central and South America, and southern Texas. Periodic outbreaks infect tens of thousands of people and kill hundreds of thousands of horses, donkeys and mules. The virus was developed into a biological weapon during the Cold War by both the United States and the

  4. Residential energy use and conservation in Venezuela: Results and implications of a household survey in Caracas

    SciTech Connect (OSTI)

    Figueroa, M.J.; Ketoff, A.; Masera, O.

    1992-10-01

    This document presents the final report of a study of residential energy use in Caracas, the capital of Venezuela. It contains the findings of a household energy-use survey held in Caracas in 1988 and examines options for introducing energy conservation measures in the Venezuelan residential sector. Oil exports form the backbone of the Venezuelan economy. Improving energy efficiency in Venezuela will help free domestic oil resources that can be sold to the rest of the world. Energy conservation will also contribute to a faster recovery of the economy by reducing the need for major investments in new energy facilities, allowing the Venezuelan government to direct its financial investments towards other areas of development. Local environmental benefits will constitute an important additional by-product of implementing energy-efficiency policies in Venezuela. Caracas`s residential sector shows great potential for energy conservation. The sector is characterized by high saturation levels of major appliances, inefficiency of appliances available in the market, and by careless patterns of energy use. Household energy use per capita average 6.5 GJ/per year which is higher than most cities in developing countries; most of this energy is used for cooking. Electricity accounts for 41% of all energy use, while LPG and natural gas constitute the remainder. Specific options for inducing energy conservation and energy efficiency in Caracas`s residential sector include energy-pricing policies, fuel switching, particularly from electricity to gas, improving the energy performance of new appliances and customer information. To ensure the accomplishment of an energy-efficiency strategy, a concerted effort by energy users, manufacturers, utility companies, government agencies, and research institutions will be needed.

  5. Characterization of Cerro Negro crude. Part I. Physical and chemical separations. [Project shared by Bartlesville Energy Technology Center, US DOE, and Institute de Tecnologico del Venezolana Petroleo

    SciTech Connect (OSTI)

    Grizzle, P.L.; Green, J.B.; Sanchez, V.; Murgia, E.; Lubkowitz, J.

    1981-09-01

    The scheme couples distillation and ion exchange and solid liquid chromatography in an attempt to prepare narrow-boiling, chemically unique fractions, which can be analyzed further or can supply data for process development. For evaluation of the separation approach, a Cerro Negro crude from the Venezuelan Orinoco basin has been studied in a cooperative program between the United States Department of Energy and the Institute de Tecnologico del Venezolana Petroleo. These fractions may be analyzed by ir, uv, fluorescence, and nuclear magnetic resonance spectroscopy, as well as various mass spectroscopy methods. The approach appears to be promising. 5 figures, 6 tables.

  6. Household energy use in urban Venezuela: Implications from surveys in Maracaibo, Valencia, Merida, and Barcelona-Puerto La Cruz

    SciTech Connect (OSTI)

    Figueroa, M.J.; Sathaye, J.

    1993-08-01

    This report identifies the most important results of a comparative analysis of household commercial energy use in Venezuelan urban cities. The use of modern fuels is widespread among all cities. Cooking consumes the largest share of urban household energy use. The survey documents no use of biomass and a negligible use of kerosene for cooking. LPG, natural gas, and kerosene are the main fuels available. LPG is the fuel choice of low-income households in all cities except Maracaibo, where 40% of all households use natural gas. Electricity consumption in Venezuela`s urban households is remarkably high compared with the levels used in households in comparable Latin American countries and in households of industrialized nations which confront harsher climatic conditions and, therefore, use electricity for water and space heating. The penetration of appliances in Venezuela`s urban households is very high. The appliances available on the market are inefficient, and there are inefficient patterns of energy use among the population. Climate conditions and the urban built form all play important roles in determining the high level of energy consumption in Venezuelan urban households. It is important to acknowledge the opportunities for introducing energy efficiency and conservation in Venezuela`s residential sector, particularly given current economic and financial constraints, which may hamper the future provision of energy services.

  7. Effect of asphaltene deposition on the internal corrosion in the oil and gas industry

    SciTech Connect (OSTI)

    Palacios T, C.A.; Morales, J.L.; Viloria, A.

    1997-08-01

    Crude oil from Norte de Monagas field, in Venezuela, contains large amounts of asphaltenes. Some of them are very unstable with a tendency to precipitate. Because liquid is carried over from the separation process in the flow stations, asphaltenes are also present in the gas gathering and transmission lines, precipitating on the inner wall of pipelines. The gas gathering and transmission lines contain gas with high partial pressures of CO{sub 2}, some H{sub 2}S and are water saturated; therefore, inhibitors are used to control internal corrosion. There is uncertainty on how inhibitors perform in the presence of asphaltene deposition. The purpose of this paper is to describe the causes that enhance asphaltene deposition in gas pipelines and present some results from an ongoing research project carried out by the Venezuelan Oil Companies.

  8. LPG in Venezuela

    SciTech Connect (OSTI)

    Romero, O.

    1986-01-01

    The use of LPG for domestic consumption in Venezuela began in late 1929 when LPG was imported in lots of 500 cylinders. These cylinders were then returned to the U.S. for refilling. Total consumption at that time was some 40M/sup 3/ (250 barrels) per year and by 1937 had grown to some 540M/sup 3/ (3,400 barrels) per year. Local production of LPG from gas began in the mid thirties with a small cooling plant in the Mene Grande Field in the Lake Maracaibo area, the first field to produce oil in Venezuela (1914). This plant produced gasoline for a refinery and some of the first LPG used in Venezuela for domestic consumption. The capacity of this plant was insufficient to satisfy the growing demand for LPG which was supplied from refinery production until the development of the natural gas processing industry. At the present time, Venezuelan refineries are net consumers of LPG.

  9. Venezuela offshore oil and gas production development: Past, present and future

    SciTech Connect (OSTI)

    Perez La Salvia, H.; Schwartz, E.; Contreras, M.; Rodriguez, J.I.; Febres, G.; Gajardo, E.

    1995-12-01

    This paper presents a short history of offshore oil and gas production in Venezuela starting in Lake Maracaibo in 1923. The main emphasis has been the results of the recent R and D and the exploratory offshore programs in areas like Orinoco Delta located in the Atlantic Ocean, Northeast and Northwest Venezuela in the Caribbean sea. In the R and D offshore program the main objectives were: (1) To establish the local environmental, oceanographical, geotechnical and seismicity conditions for the Venezuelan Continental Platform. (2) To give a technical support to the PDVSA Operating Affiliates during the exploratory programs including: (a) to develop accurate drilling vessel positioning systems; (b) evaluation of sea bottom geotechnical conditions for safely operating the jack-ups and drilling vessels involved in the exploratory wells and (c) to identify those areas which because of their special nature require further investigation to establish preliminary type of platforms required for the areas to be developed or to evaluate other solutions proposed by Foreign Consultant Engineering Companies to the PDVSA Operating Affiliated Companies. The main objective of PDVSA for the coming future will be to develop the North of Paria Gas Field through the initially named Christopher Columbus Project now Sucre Gas, S.A., a consortium conformed by LaGoven, S.A. Shell, Exxon and Mitsubishi. objective of this paper is to give an idea of the history of the Venezuelan Oil and Gas Offshore development giving emphasis to the results of the INTEVEP S.A. Red offshore program and to show some results of the particular characteristics of oceanographical, environmental, geotechnical and seismic conditions in the main areas evaluated during the exploratory program: Orinoco Delta, Gulf of Paria and North of Paria.

  10. Analysis of heavy oils: Method development and application to Cerro Negro heavy petroleum

    SciTech Connect (OSTI)

    Carbognani, L.; Hazos, M.; Sanchez, V. ); Green, J.A.; Green, J.B.; Grigsby, R.D.; Pearson, C.D.; Reynolds, J.W.; Shay, J.Y.; Sturm, G.P. Jr.; Thomson, J.S.; Vogh, J.W.; Vrana, R.P.; Yu, S.K.T.; Diehl, B.H.; Grizzle, P.L.; Hirsch, D.E; Hornung, K.W.; Tang, S.Y.

    1989-12-01

    On March 6, 1980, the US Department of Energy (DOE) and the Ministry of Energy and Mines of Venezuela (MEMV) entered into a joint agreement which included analysis of heavy crude oils from the Venezuelan Orinoco oil belt.The purpose of this report is to present compositional data and describe new analytical methods obtained from work on the Cerro Negro Orinoco belt crude oil since 1980. Most of the chapters focus on the methods rather than the resulting data on Cerro Negro oil, and results from other oils obtained during the verification of the method are included. In addition, published work on analysis of heavy oils, tar sand bitumens, and like materials is reviewed, and the overall state of the art in analytical methodology for heavy fossil liquids is assessed. The various phases of the work included: distillation and determination of routine'' physical/chemical properties (Chapter 1); preliminary separation of >200{degree}C distillates and the residue into acid, base, neutral, saturated hydrocarbon and neutral-aromatic concentrates (Chapter 2); further separation of acid, base, and neutral concentrates into subtypes (Chapters 3-5); and determination of the distribution of metal-containing compounds in all fractions (Chapter 6).

  11. Refiner/marketer targets production of transportation fuels and distillates

    SciTech Connect (OSTI)

    Thompson, J.E.

    1997-01-01

    Citgo Petroleum Corp., the wholly owned subsidiary of Petroleos de Venezuela, S.A. (PDVSA), the Venezuelan national oil company, owns two gasoline producing refineries, a 305,000-b/d system in Lake Charles, La., and a 130,000-b/d facility in Corpus Christi, Texas. Each is considered a deep conversion facility capable of converting heavy, sour crudes into a high percentage of transportation fuels and distillates. Two smaller refineries, one in Paulsboro, N.J., and one in Savannah, GA., have the capacity to process 40,000 b/d and 28,000 b/d of crude, respectively, for asphalt products. In the past two years, Citgo`s light oils refineries operated safely and reliably with a minimum of unscheduled shutdowns. An ongoing emphasis to increase reliability has resulted in extended run lengths at the refineries. Citgo has invested $314 million at its facilities in 1995, much of this toward environmental and regulatory projects, such as the new waste water treatment unit at the Lake Charles refinery. Over the next few years, Citgo expects to complete $1.5 billion in capital spending for major processing units such as a 60,000-b/d FCC feed hydrotreater unit at the Lake Charles refinery and crude expansion at the Corpus Christi refinery. Product exchanges and expanded transport agreements are allowing Citgo to extend its marketing reach.

  12. Evaluation of Control Strategies to Effectively Meet 70-90% Mercury Reduction on an Eastern Bituminous Coal Cyclone Boiler with SCR

    SciTech Connect (OSTI)

    Tom Campbell

    2008-12-31

    This is the final site report for testing conducted at Public Service of New Hampshire's (PSNH) Merrimack Unit 2 (MK2). This project was funded through the DOE/NETL Innovations for Existing Plants program. It was a Phase III project with the goal to develop mercury control technologies that can achieve 50-70% mercury capture at costs 25-50% less than baseline estimates of $50,000-$70,000/lb of mercury removed. While results from testing at Merrimack indicate that the DOE goal was partially achieved, further improvements in the process are recommended. Merrimack burned a test blend of eastern bituminous and Venezuelan coals, for a target coal sulfur content of 1.2%, in its 335-MW Unit 2. The blend ratio is approximately a 50/50 split between the two coals. Various sorbent injection tests were conducted on the flue gas stream either in front of the air preheater (APH) or in between the two in-series ESPs. Initial mercury control evaluations indicated that, without SO3 control, the sorbent concentration required to achieve 50% control would not be feasible, either economically or within constraints specific to the maximum reasonable particle loading to the ESP. Subsequently, with SO{sub 3} control via trona injection upstream of the APH, economically feasible mercury removal rates could be achieved with PAC injection, excepting balance-of-plant concerns. The results are summarized along with the impacts of the dual injection process on the air heater, ESP operation, and particulate emissions.

  13. Cameron synthetic fuels report

    SciTech Connect (OSTI)

    Not Available

    1980-06-01

    The increasing scarcity of conventional crude oil resources, as well as the sharply higher prices of crude oil, will generate increased interest in heavy oil, tar sands, and oil shale as potential substitutes. For all of these unconventional oil resources, extraction will be much more difficult, time consuming, and costly than for conventional crude oil. Although the inplace resources are vast and exist in many areas including the United States, the USSR, western Europe, Canada, and Latin America, probably only a small fraction of the inplace resources will prove to be economically extractable. These unconventional oil resources are now being developed in several locations around the world, and depending upon the exact definition probably account for less than 1 percent of current world oil supplies. The major current developments include: Canadian tar sands. Heavy oil production at Yarega in the Komi Autonomous Republic in the Soviet Union. The USSR also burns shale for power generation in Estonia. Venezuelan production of heavy oil in the Orinoco Heavy Oil Belt is currently about 15,000 b/d. Oil shale is likely to prove much less important than heavy oil and tar sands over the next 20 years. Further development of these unconventional resources is planned, and many projects are under way or under study. On the basis of current planning, world output of heavy oils and oil from tar sands and shale will be unlikely to exceed 2 million b/d by 1990, roughly five time today's level. However, both of these resources will require the development of new technologies for any large increases in output above what is now planned. The bulk of Canada's tar sands exists at great depths and will require the development of in situ processes for extraction. In the Orinoco, heavy metals contained in the oil make it difficult to refine with existing technology.