Compaction measurements on cores from the Pleasant Bayou wells

Conference · Thu Jan 01 04:00:00 EST 1981

OSTI ID:7369439

Jogi, P N; Gray, K E; Ashman, T R; Thompson, T W; Bebout, D G; Bachman, A L ^[1]

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1. eds.

Additional measurements of compressibility, compaction coefficients, porosities, permeabilities, and resistivities have been conducted on cores from Pleasant Bayou wells No. 1 and No. 2. All rock parameters show non-linear behavior with changing reservoir or pore pressure, which is of interest in modelling reservoir performance and subsidence. Compressibilities and uniaxial compaction coefficients decline by a factor of 2 to 3 as reservoir pressure declines from geopressured to normal hydrostatic conditions. Porosity reductions are 6 to 8% while permeability reductions are on the order of 10 to 30% over that reservoir pressure range. Measured formation factors were 2 to 4 times log derived values for F. Matrix compressibilities were not insignificant relative to bulk compressibilities.

• Research Organization: Univ. of Texas, Austin
• OSTI ID: 7369439
• Report Number(s): CONF-811026-14; ON: DE82003311
• Country of Publication: United States
• Language: English

Related Subjects

15 GEOTHERMAL ENERGY
150303* -- Geothermal Exploration & Exploration Technology-- Exploratory Drilling & Well Logging
COMPACTING
COMPRESSIBILITY
DRILL CORES
ELASTICITY
ENERGY SYSTEMS
GEOPRESSURED SYSTEMS
GEOTHERMAL WELLS
GROUND SUBSIDENCE
Geothermal Legacy
MECHANICAL PROPERTIES
PERFORMANCE
PERMEABILITY
POROSITY
TENSILE PROPERTIES
WELLS