Slaughter estate unit tertiary pilot performance
Six pilot injection wells and two pilot producers were drilled in 1972 in a portion of the SEU (Slaughter field) that had not been waterflooded. Waterflooding was begun in 1972 and a peak secondary oil rate of 407 BOPD (64.7 m/sup 3//d oil) was observed in June 1973. By mid-1976 most of the secondary oil has been produced, a secondary decline rate was well established, and the WOR had increased significantly. Alternate solvent gas and water injection, for favorable areal sweep, was initiatied in Aug. 1976, and the first tertiary oil production was observed in Oct. 1977 when oil production from the two pilot producers increased from 22 to 29 BOPD (3.5 to 4.6 m/sup 3//d oil). Peak tertiary production was 152 BOPD (24.2 m/sup 3//d oil) in Feb. 1979. The SEU tertiary pilot was conducted so that both secondary and tertiary recovery factors could be delineated clearly by actually measuring oil an the tank. Performance data from this pilot conclusively show that alternate CO/sub 2/-water will move tertiary oil in significant quantities in this and similar west Texas reservoirs. 6 refs.
- Research Organization:
- Amoco Prod Co, USA
- OSTI ID:
- 5238369
- Journal Information:
- J. Pet. Technol.; (United States), Journal Name: J. Pet. Technol.; (United States) Vol. 34:3; ISSN JPTJA
- Country of Publication:
- United States
- Language:
- English
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