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CO/sub 2/ Minitest, Little Knife Field, ND: A case history

Conference · · Soc. Pet. Eng. AIME, Pap.; (United States)
OSTI ID:6640080
A joint DOE-Gulf Oil Corporation Minitest of CO/sub 2/ miscible flooding was conducted in the Mission Canyon formation of the Little Knife Field, North Dakota. In the five-acre minitest area, a central injection and three observation wells were drilled to form a non-producing, inverted four-spot pattern. A 1:1 CO/sub 2/ WAG injection sequence (preflush water injection, five alternate slugs of CO/sub 2/ and water, and drive water injection) was implemented. Prior to the CO/sub 2/ minitest, a detailed reservoir description of the test area was developed through logging, pulse testing and core analysis. Extensive laboratory work had been performed to determine miscibility pressure, swelling and viscosity reduction effects. The minitest included continuous bottomhole pressure measurement in all test wells and time-lapse logging to monitor saturation changes as alternate slugs of water and CO/sub 2/ passed the observation wells. Fluid samples from the observation wells were collected periodically to check for tracers and fluid composition.
Research Organization:
Gulf Oil E and P Co.
OSTI ID:
6640080
Report Number(s):
CONF-8304162-
Conference Information:
Journal Name: Soc. Pet. Eng. AIME, Pap.; (United States) Journal Volume: SPE/DOE 12704
Country of Publication:
United States
Language:
English