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Porosity, permeability, and pore structure of the tight mesaverde sandstone, Piceance Basin, Colorado

Journal Article · · SPE (Society of Petroleum Engineers) Format. Eval.; (United States)
DOI:https://doi.org/10.2118/13134-PA· OSTI ID:6203473
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Special core analyses on 44 tight Mesaverde sandstone samples from the U.S. DOE Multiwell Experiment (MWX) were combined with petrographic investigations to relate the porosity and permeability of the cores to the pore structure of the rocks. Core analysis was performed on 1-in. (2.54-cm) -diameter horizontal plug samples with a computerized steady-state-flow measuring device that routinely measures gas flow rates with a resolution of better than 10/sup -6/ std cm/sup 3//s. All samples were selected from intervals expected to be gas-productive on the basis of wireline well logs and were taken from the portion of the interval that showed the lowest gamma ray log response. The core plugs were measured for dry permeability to gas, relative permeability at various water saturations, porosity to gas, and PV compressibility. Petrographic samples were taken directly off the plug ends and were analyzed with both an optical microscope and a scanning electron microscope (SEM). The petrographic study was explicitly directed toward observing the flow paths and pore structure deduced from the core analysis data.
Research Organization:
Institute of Gas Technology
OSTI ID:
6203473
Journal Information:
SPE (Society of Petroleum Engineers) Format. Eval.; (United States), Journal Name: SPE (Society of Petroleum Engineers) Format. Eval.; (United States) Vol. 2:2; ISSN SFEVE
Country of Publication:
United States
Language:
English

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Related Subjects

03 NATURAL GAS
030200* -- Natural Gas-- Reserves
Geology
& Exploration
CLOSURES
COMPRESSIBILITY
COMPUTERIZED CONTROL SYSTEMS
CONTROL SYSTEMS
DRILL CORES
ELECTRON MICROSCOPES
FLOW RATE
FLUID FLOW
GAMMA LOGGING
GAS FLOW
GAS METERS
GEOLOGIC DEPOSITS
MEASURING INSTRUMENTS
MECHANICAL PROPERTIES
METERS
MICROSCOPES
MINERAL RESOURCES
NATIONAL ORGANIZATIONS
NATURAL GAS DEPOSITS
OPTICAL MICROSCOPES
PERMEABILITY
PETROGRAPHY
PICEANCE CREEK BASIN
POROSITY
RADIOACTIVITY LOGGING
RESEARCH PROGRAMS
RESOURCES
ROCKS
SANDSTONES
SEDIMENTARY ROCKS
US DOE
US ORGANIZATIONS
WELL LOGGING