新疆石油地质

新疆石油地质 ›› 1994, Vol. 15 ›› Issue (3): 253-260.

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采用多种注采方式提高高含水期油藏采收率──以克拉玛依油田六中区为例

廖勇, 何湘璧, 王庆祥   

  1. 第一作者:工程师 油田开发 新疆石油管理局采油二厂 克拉玛依 834008
  • 收稿日期:1992-09-20 出版日期:1994-09-01 发布日期:2020-07-22

USE OF MULTIPLE INJECTION-PRODUCTION PATTERNS FOR ENHANCED OIL RECOVERY OF RESERVOIRS IN HIGH-WATER-CUT STAGE——AN EXAMPLE FROM MIDDLE DISTRICT NO.6 OF KARAMAY OILFIELD

Liao Yong, He Xiangbi, Wang Qingxiang   

  1. First Author:Engineer ,Oilfield Development, No.2 Oil Production Compang, Xinjang Petroleum Administratuon Bureau, Karamay 834008
  • Received:1992-09-20 Online:1994-09-01 Published:2020-07-22

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摘要： 克拉玛依油田六中区三叠系克下组砾岩油藏进入中－高含水期后，注入水沿高渗透层突进，油层出砂严重，年综合递减率大于９．５％。在深入研定油藏的构造和储层特征后，采取多种注采方式，查清了油藏的油水分布和油水运动规律，提出整治方案，１９９０－１９９２年实施后，年采油量上升１７％，综合含水率由８１．２％降为７７．５％，地层压力上升７％，采收率由３２％提高到３５％。

关键词: 克拉玛依油田六中区, 三叠系克下组, 砾岩油藏, 注采方式, 采收率

Abstract: ln its high-water-cut stage, injected water cone along high-permeability zones within Lower Karamay Formation (Triassic ) conglomerale reservoir in Midle District No.6 of Karamay oilfieid. Moreover, severe sand production problem and annual decline rate of over 9.5% exist. Following a further study of oil-bearing structures and reservoir characteristics, multiple injection-production patterns were used, thereby ascertaining subsurface distribution and flow patterns of oil and waler ,and developing curing designs, When these designs were implemented in 1990-1992, it resulted in annual oil production increase by 17%, water cut reduction from 81.2% to 77.5%, subsutface reservoir pressure increase by 7%, and enhanced oil recovery from 32% to 35%。

Key words: Middle District No. 6 of Karamay oilfield, Low Karamay Formation (Triassic), Conglomerate reservoir, Injcction-production pattern, Recovery