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- W2014234098 abstract "An industrial operation of polymer injection has been implemented in the Courtenay field which is a satellite of the Chateaurenard field. A large slug of partially hydrolysed polyacrylamide solution with a viscosity of 21 cP is being injected to displace a 40 cP oil. The Courtenay field is an elongated sand layer at a depth of 600 m. The initial accumulation was 1.3 million m3 of which only 441,000 m3 have been produced. The production rate was limited by low field pressure and digitations of water through the viscous oil. A polymer injection pilot has been run between 1985 and 1989. Excellent recovery was obtained, leading to a field-wide expansion. The area swept by polymer encompasses 640,000 m3. It consists of three zones with a total of 4 injectors and 16 producers. Injection of a 1000 ppm polymer solution started in July 1989 at a total rate of 380 m3/day. The polyacrylamide polymer supplied in the emulsion form is diluted in field water by a two-stages dilution loop. As of December 31, 1989, 194,500 m3 of polymer solution concentrated at 1000 ppm have been injected, representing 30.4% pore volume. A strong increase of the total field oil production has been observed, from 22 m3 per day before polymer injection, to 70 m3 per day presently. For the time most of this increase is due to a change in field pressure. The arrival of tertiary oil banks has been observed on five of the producing wells. A high concentration of polymer has been observed in the effluent water of one of the producers, the produced polymer is not degraded by the injection and the transport through the formation. If the project proceeds as expected, a total of 179 kt of oil will be produced until the year 2001. In the “laisser-faire” scenario, we would have produced only 57 kt. The technical cost before expedition of the incremental oil should be 11 $/bbl." @default.
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- W2014234098 date "1992-04-01" @default.
- W2014234098 modified "2023-09-27" @default.
- W2014234098 title "Commercial polymer injection in the Courtenay field" @default.
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- W2014234098 doi "https://doi.org/10.1016/0920-4105(92)90004-k" @default.
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