Curry unit: a successful waterflood in a depleted carbonate reservoir with high gas saturation. [Texas]

Conference · Mon Jan 01 04:00:00 EST 1973 · Soc. Pet. Eng. AIME, Pap.; (United States)

OSTI ID:6985524

Hasan, S M

With the continuing shortage of oil and high exploration costs there is potential for increasing oil recovery by waterflooding the old depleted carbonate reservoirs which have been neglected in the past. These are the reservoirs that may have produced 30 to 40 yr and at a cursory look do not seem to be an attractive prospect for secondary recovery. The old Curry Pool located near Breckenridge, Texas, has produced over 15 million bbl of oil since discovery in 1918. At the time of the start of waterflood in 1966, a majority of the wells had been abandoned and a vacuum was pulled on this reservoir for about 30 yr. A 216-acre peripheral pilot with 8 water injection wells was started in 1966 and expanded in 2 stages to the entire field. The flood pattern initially was an inverted 9-spot but was changed to 5-spot at 40-acre spacing in 1971. The oil production increased from 80 bopd in 1966 to a peak rate of 3,650 bopd in 1972. The incremental oil recovery due to waterflood is estimated at 7.5 million bbl of oil.

• Research Organization: Mobil Oil Corp.
• OSTI ID: 6985524
• Report Number(s): CONF-7309153-
• Conference Information: Journal Name: Soc. Pet. Eng. AIME, Pap.; (United States) Journal Volume: SPE-4602
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
CARBONATE ROCKS
ENERGY SOURCES
ENHANCED RECOVERY
FEDERAL REGION VI
FLUID INJECTION
FOSSIL FUELS
FUELS
GAS SATURATION
GEOLOGIC DEPOSITS
INJECTION WELLS
MINERAL RESOURCES
NORTH AMERICA
OIL FIELDS
OIL WELLS
PETROLEUM
PETROLEUM DEPOSITS
PRODUCTION
RECOVERY
RESOURCES
ROCKS
SATURATION
SEDIMENTARY ROCKS
TEXAS
USA
WATERFLOODING
WELL SPACING
WELLS