Two-phase flow in tight-gas sands. Topical report, January-December 1990
The ability of pore geometry to predict key reservoir parameters was assessed. Thin section analysis and mercury porosimetry are relatively inexpensive and rapid techniques of examining either core or drill cuttings. These analyses were performed on 58 chip samples obtained from SFE No. 3 core, to determine porosity, average pore size, pore geometry type, shape factor for pores, and entry capillary pressure. Results were compared with those from more detailed core analysis to determine whether correlations with porosity, permeability, water saturation, or combinations of these parameters were possible. Results from similar past analyses of tight sand samples from other formations and basins were also included in the analysis. Results indicate that if porosity and entry capillary pressure data from mercury porosimetry are combined with pore geometry type from thin section analysis, quantitative predictions of porosity, permeability, water saturation, and gas-filled porosity can be made for some types of pore structures. The effectiveness of a magnifying x-ray fluoroscope to observe and analyze fluid distribution in tight sand core was assessed.
- Research Organization:
- Institute of Gas Technology, Chicago, IL (United States)
- OSTI ID:
- 7103529
- Report Number(s):
- PB-92-204429/XAB; CNN: GRI-5090-211-1940
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
030200* -- Natural Gas-- Reserves
Geology
& Exploration
CAPILLARY FLOW
CHEMICAL ANALYSIS
CORRELATIONS
DRILL CORES
ENERGY SOURCES
FLUID FLOW
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GAS SATURATION
GASES
GEOLOGIC DEPOSITS
GEOMETRY
MATHEMATICS
MEASURING INSTRUMENTS
MINERAL RESOURCES
NATURAL GAS
NATURAL GAS DEPOSITS
NONDESTRUCTIVE ANALYSIS
PERMEABILITY
POROSIMETERS
POROSITY
PRODUCTION
RESERVOIR PRESSURE
RESERVOIR ROCK
RESOURCES
ROCKS
SANDSTONES
SATURATION
SEDIMENTARY ROCKS
TWO-PHASE FLOW
WATER SATURATION
X-RAY EMISSION ANALYSIS
X-RAY FLUORESCENCE ANALYSIS