Coupling water injection in channel sand reservoirs
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摘要: 塔河油田河道砂岩性油藏平面非均质性较强,横向分布变化较快,河道中心砂体厚、物性好,向两边减薄尖灭且物性变差。非均质性造成区块采出程度难以进一步提升,井间大量剩余油滞留,虽局部发育小规模边水,但天然能量供给不足,必须注水补充能量。常规连续注水初期有效但容易发生水窜,且水窜后有效治理手段少、治理难度大,为此进行了最优注采方式、合理注采比及合理液量、合理注水周期的研究,并在T5井区三叠系阿四段河道砂油藏进行了耦合注水的实验,效果明显。Abstract: Channel sandstone reservoirs in the Tahe oil field have strong plane heterogeneity. Sand bodies are thick and show favorable physical properties in channel center, and become worse to the sides. As a result, oil remains in wells in great quantities. Water injection for energy supply is necessary to enhance production even though small-scale edge water exists locally. Conventional continuous water injection is effective during the early stage; however, it is difficult to govern water breakthrough. Optimized injection way, injection-production ratio, water injection amount and cycle were put forward and proved effective after practicing in channel sand reservoirs in Triassic, T5 well block.
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[1] 姜泽菊,安身法.注水油田转周期注水开发影响因素探讨[J].石油钻探技术,2005,33(6):54-56. [2] 王辉,刘国旗,崔秀敏.周期注水技术在严重非均质高含水油藏开发中的应用[J].重庆科技学院学报(自然科学版),2006,8(2):7-9. [3] 张继春,柏松章.周期注水实验及增油机理研究[J].石油学报,2003,24(2):76-80. [4] 赵淑霞,朱环宇,毛振强,等.周期注水的影响因素[J].内蒙古石油化工,2008,34(23):133-134. [5] 刘丹.利用周期注水方法改善后续水驱开发效果[J].内蒙古石油化工,2008.34(14):72-73.
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