Slaughter Estate Unit CO/sub 2/ pilot reservoir description via a black oil model waterflood history match
Amoco Production Company is conducting a tertiary miscible gas pilot in the Slaughter Estate Unit, Hockley County, Texas. The pilot consists of two normal five-spot patterns which encompass an area of 12.3 acres (49.8 Mm/sup 2/) and is located in a region of the unit that is undergoing an active waterflood. The pilot wells were drilled in 1972 in an area of the unit that was under volumetric depletion. A pilot waterflood was then initiated in November 1972. A well-established secondary decline was obtained in the pilot in 1976 and acid gas (72% CO/sub 2/ and 28% H/sub 2/S) was then initiated. The pilot objectives are to determine primary plus secondary and tertiary oil recovery and to obtain a quantitative interpretation of the acid gas displacement process. A good reservoir description is required to meet these objectives since the tertiary performance is influenced by both reservoir heterogeneities and variables associated with the acid gas displacement process. It was determined that the Slaughter Estate Unit tertiary pilot had an original oil-in-place of 642,400 STB (102 133 m/sup 3/). A waterflood prediction using the reservoir description described in this paper indicates that an ultimate primary plus secondary recovery of 48.8% OOIP would have been obtained from the pilot if waterflood operations had been continued to an abandonment water cut of 98%. Based on this prediction, it was established that the tertiary oil recovery due to the miscible acid gas process was 15.5% OOIP as of October 21, 1981 (JMT)
- OSTI ID:
- 6133059
- Report Number(s):
- CONF-820419-
- Journal Information:
- Soc. Pet. Eng. AIME, Pap.; (United States), Journal Name: Soc. Pet. Eng. AIME, Pap.; (United States); ISSN SEAPA
- Country of Publication:
- United States
- Language:
- English
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Slaughter Estate Unit CO/sub 2/ pilot reservoir description via a black oil model waterflood history match
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Related Subjects
020300* -- Petroleum-- Drilling & Production
CARBON DIOXIDE INJECTION
ENERGY SOURCES
ENHANCED RECOVERY
FEDERAL REGION VI
FLUID INJECTION
FOSSIL FUELS
FUELS
GEOLOGIC DEPOSITS
MINERAL RESOURCES
MISCIBLE-PHASE DISPLACEMENT
NORTH AMERICA
OIL FIELDS
OIL WELLS
PETROLEUM
PETROLEUM DEPOSITS
RECOVERY
RESOURCES
TEXAS
USA
WATERFLOODING
WELL SPACING
WELLS