An evaluation of CO/sub 2/ huff 'n' puff field tests in Texas

Conference · Tue Dec 31 23:00:00 EST 1985

OSTI ID:7159974

Haskin, H K; Alston, R B

Field experience in 28 Texas CO/sub 2/ huff 'n' puff projects is presented and discussed. These projects were designed and implemented by producing department personnel. In the absence of mechanical problems, CO/sub 2/ huff 'n' puff can recover oil from 23-30/sup 0/API Texas Gulf Coast Miocene Reservoirs. Shorter soak times (10-17 days) recovered as much or more oil as longer soak times for 2.3 cP crudes. Injection of larger volumes of CO/sub 2/ (8 MMSCF (230,000 m/sup 3/) instead of 4 MMSCF (11,000 m/sup 3/)) resulted in greater incremental oil recovery of a 33 cP (0.033 Pa-s) crude. Oil cut response can guide in the selection of wells to receive multiple cycles of CO/sub 2/. Two simple predictive methods are presented for estimating incremental oil recovery from CO/sub 2/ huff 'n' puff. One is from the literature and the other was developed for the Texas reservoirs, where oil swelling and viscosity reduction are important oil recovery mechanisms. Although predictions from both methods show modest agreement with field production, the method developed specifically for Texas cases was slightly better.

• Research Organization: Texaco Inc.
• OSTI ID: 7159974
• Report Number(s): CONF-861080-
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
CALCULATION METHODS
CARBON DIOXIDE INJECTION
DESIGN
ENERGY SOURCES
ENHANCED RECOVERY
EVALUATION
FEDERAL REGION VI
FIELD TESTS
FLUID INJECTION
FORECASTING
FOSSIL FUELS
FUELS
GEOLOGIC DEPOSITS
IMPLEMENTATION
MINERAL RESOURCES
MISCIBLE-PHASE DISPLACEMENT
NORTH AMERICA
OIL WELLS
PERSONNEL
PETROLEUM
PETROLEUM DEPOSITS
RECOVERY
RESEARCH PROGRAMS
RESOURCES
STIMULATION
TESTING
TEXAS
USA
VISCOSITY
WELL STIMULATION
WELLS