North Stanley Polymer Demonstration Project, second annual report
This project is a cooperative test of the economics of polymer enhanced waterflooding and is a field scale test involving 1,010 productive acres containing 72 million barrels of pore volume, 19 injection wells, and 28 producers. The primary activity during the second year was successful injection of the polymer slug. Polymer injection was completed June 22, 1977, after injecting 1,194,770 pounds of Dow Pusher 700 and 11,962,918 barrels of water over a period of 372 days. The average polymer concentration was 285 ppM. Nine of the injection wells were given Channelblock (TM) treatments. One well, Pappin 12, did not respond to the Channelblock treatment; it was the closest well to the injection plant, and the pressure was too high for the soft gel to hold. The rate on Pappin 12 was then restricted by use of a flow regulator coil; the polymer (250 ppM) underwent 12% shear degradation passing through the regulator coil. Movement of the slug through the reservoir was monitored by analysis of produced water samples. The producing wells were sampled every two weeks from Feb. through June and once a month thereafter. The water samples were analyzed for salinity and polymer. The primary producing problem was a change in the producing well fluid levels resulting from the changes in injection distribution, and it was necessary to either change out the pump or lower the present pump which resulted in less efficiency. The oil production started responding in Sept. 1976 by increasing 15 BPD to 581 BPD. It increased to 586 BPD in Oct., 590 BPD in Nov., and 592 BPD in Dec. In Jan., production jumped to 660 BPD. It fell back to 641 in Feb. but slowly increased to 658 BPD by May. June's production fell back to 645 BPD, partially as a result of lower injection rates experienced when polymer injection was terminated. (DLC)
- Research Organization:
- Kewanee Oil Co., Tulsa, Okla. (USA)
- OSTI ID:
- 7289847
- Report Number(s):
- BERC/TPR-77/7
- Country of Publication:
- United States
- Language:
- English
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