Mechanical properties of geopressured core and their influence on reservoir performance: T-F and S/DOE Gladys McCall No. 1 Well

Conference · Sat Oct 01 04:00:00 EDT 1983 · Soc. Pet. Eng. AIME, Pap.; (United States)

OSTI ID:5293365

Kelkar, S; Cooley, C M

Reservoir deformations associated with large pore pressure drawdowns can play a significant role in the production performance of deep oil and brine reservoirs. In order to evaluate these effects, laboratory measurements were performed at simulated in-situ conditions on core from geopressured production intervals from the T-F and S/DOE Gladys McCall No. 1 Well, Cameron Parish, Louisiana. The test conditions ranged around 15,000 psi (103 MPa) confining pressure, 4000 psi (28 MPa) vertical deviatoric stress, and 13,000 psi (90 MPa) pore pressure at temperatures of 300 F (149 C). Reservoir drawdown was simulated by reducing the pore pressure at constant lateral strain and overburden stress. Elastic moduli, failure strengths and creep rates were determined from the tests. A number of permeability measurements were also carried out. The effect of reservoir drawdown on the production potential was assessed by combining these measurements with a simple one-dimensional liquid phase reservoir model. It was found that creep rates considered very low on the laboratory scale may have a significant effect on the production. Recoverable reserves were found to increase by as much as 25-50 due to creep compaction.

• Research Organization: Terra Tek Research
• OSTI ID: 5293365
• Report Number(s): CONF-8310121-
• Conference Information: Journal Name: Soc. Pet. Eng. AIME, Pap.; (United States) Journal Volume: SPE12191
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
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HIGH PRESSURE
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MATERIALS TESTING
MECHANICAL PROPERTIES
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VERY HIGH PRESSURE
WELLS
YIELD STRENGTH