Enhanced oil recovery by CO/sub 2/ miscible displacement in the Little Knife Field, Billings County, North Dakota

Conference · Fri Jan 01 04:00:00 EST 1982 · Soc. Pet. Eng. AIME, Pap.; (United States)

OSTI ID:6329213

Desch, J B; Larsen, W K; Lindsay, R F; Nettle, R L

A CO/sub 2/ minitest employing the miscible displacement process was conducted in the Mission Canyon Formation (lower Mississippian) at Little Knife Field, North Dakota. The Mission Canyon is a dolomitized carbonate reservoir which is undergoing primary depletion. Four wells were drilled in an inverted four-spot configuration, covering five acres. The central well served as the injection well and was surrounded by three non-producing observation wells. A WAG-type injection sequence utilized five alternate slugs of formation water and CO/sub 2/. Preflush injection began December 11, 1980, followed by the WAG slugs from January 7 to March 25, 1981. Drive water injection commenced immediately and was completed on September 24, 1981. Injection rates were maintained at 1150 B/D during water injection and 40 T/D during CO/sub 2/ injection. Tracers were used during the waterflood preflush and with the water during the WAG. A pressure core behind the flood front was obtained to confirm residual-oil saturations in the project interval. Overall rock recovery was excellent, 90%, but sample recovery under reservoir pressure was less than anticipated. Invasion of drilling fluids during coring was checked by introduction of a radioactive tracer into the coring fluid. Project analysis is still ongoing and once completed, the simulation models will be updated and used to predict field-wide applicability. (JMT)

• OSTI ID: 6329213
• Report Number(s): CONF-820419-
• Conference Information: Journal Name: Soc. Pet. Eng. AIME, Pap.; (United States)
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON DIOXIDE INJECTION
CARBON OXIDES
CHALCOGENIDES
DRILLING FLUIDS
ENERGY SOURCES
ENHANCED RECOVERY
FEDERAL REGION VIII
FLUID INJECTION
FLUIDS
FOSSIL FUELS
FUELS
GEOLOGIC DEPOSITS
MINERAL RESOURCES
MISCIBLE-PHASE DISPLACEMENT
NORTH AMERICA
NORTH DAKOTA
OIL FIELDS
OIL SATURATION
OIL WELLS
OXIDES
OXYGEN COMPOUNDS
PETROLEUM
PETROLEUM DEPOSITS
RECOVERY
RESOURCES
SATURATION
USA
WELLS