CO/sub 2/ flooding a waterflooded shallow Pennsylvanian sand in Oklahoma: A case history

Conference · Sun Apr 01 04:00:00 EST 1984 · Soc. Pet. Eng. AIME, Pap.; (United States)

OSTI ID:6869189

Kumar, R; Eibeck, J N

ARCO Oil and Gas Company started work on a CO/sub 2/ Tertiary Pilot in the Garber field located in Garfield Co., Ok. in 1980. Garber is a Pennsylvanian age, multiplay field, discovered in 1916. It has produced in early years under depletion drive and later by waterflooding. The purpose of the pilot was to investigate the tertiary oil potential of the shallow sands which were previously waterflooded to depletion. CO/sub 2/ was injected into the Crews sand, a shallow Pennsylvanian sand located at an average depth of 1950 ft (594 m). Prior to the start of the pilot program, the depleted Crews sand waterflood was not producing in the pilot area. The main pilot is a 10.4 acres (4.2 ha), normal 5-spot, which is enclosed by backup water injectors and outside producers. Water was initially injected in the project area to raise the reservoir pressure and to establish a base production curve. Then a total of 27,000 tons (24,500 X 10/sup 3/ kgs) of CO/sub 2/, equalling 35% HCPV in the effective area, was injected as a straight slug. The pilot response has been very encouraging. The project has already produced 70,000 STBO (11.1 X 10/sup 3/m/sup 3/). Ultimate recovery from this pilot should exceed 14% of the original oil in place within the effective area. The success of this pilot suggests that it is possible to CO/sub 2/ flood reservoirs at depths shallower than previously thought possible.

• Research Organization: ARCO Oil and Gas Co.
• OSTI ID: 6869189
• Report Number(s): CONF-8304162-
• Conference Information: Journal Name: Soc. Pet. Eng. AIME, Pap.; (United States) Journal Volume: SPE/DOE 12668
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
CARBON DIOXIDE INJECTION
DEPTH
DIMENSIONS
ENERGY SOURCES
ENHANCED RECOVERY
FEDERAL REGION VI
FLUID INJECTION
FOSSIL FUELS
FUELS
FUNCTIONAL MODELS
GEOLOGIC AGES
GEOLOGIC DEPOSITS
MINERAL RESOURCES
MISCIBLE-PHASE DISPLACEMENT
NORTH AMERICA
OIL FIELDS
OIL WELLS
OIL YIELDS
OKLAHOMA
PALEOZOIC ERA
PENNSYLVANIAN PERIOD
PETROLEUM
PETROLEUM DEPOSITS
PILOT PLANTS
RECOVERY
RESIDUAL PETROLEUM
RESOURCES
ROCKS
SANDSTONES
SEDIMENTARY ROCKS
TECHNOLOGY UTILIZATION
USA
WATERFLOODING
WELLS
YIELDS