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Successful Spraberry flood: Mobil's E. T. O'Daniel project

Conference · · Soc. Pet. Eng. AIME, Pap.; (United States)
OSTI ID:5995410
The Upper Spraberry zone on Mobil's 2, 160-acre E.T. O'Daniel lease has been under waterflood since Aug. 7, 1959. Rows of injection wells are spaced about 2/3 of a mile apart, and are oriented inline with the major fracture trend. Dump flooding has been the injection mechanism from project start through 1966. This consists of gravity injection of water from the Santa Rosa water sand at a depth of 1,000 ft, into the Upper Spraberry zone at 7,200 ft in the same wellbore. At the time waterflooding was initiated in 1959, the lease was at its economic limit after having produced some one million bbl of oil by primary depletion. This primary ultimate recovery of 463 bbl per acre is representative of those leases in the Spraberry Trend Area Field on which only the Upper Spraberry zone is productive. Since start of waterflood operations the lease has produced an additional 834,00 bbl of oil and is currently producing at a rate of 130,000 bbl per year. Thus, the project has already recovered waterflood reserves equivalent to 0.8 of its primary ultimate and continues to produce at an average rate of 23 bopd/well.
Research Organization:
Mobil Oil Corp
OSTI ID:
5995410
Report Number(s):
CONF-670562-
Conference Information:
Journal Name: Soc. Pet. Eng. AIME, Pap.; (United States) Journal Volume: SPE-1791
Country of Publication:
United States
Language:
English