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提高特高含水期油藏采收率的方法及应用效果
断块油气田
2002年 9卷 第04期
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Title
Improving UHWCP Recovery Efficiency In Unit 9-10 of Shengtou Second Zone
单位
1.胜利油田有限公司胜利采油厂，2.中原油气高新股份有限公司天然气产销厂
Organization
Chengcai Geological Research Institute , Shengli Oilfield Co. Ltd. , SINOPEC, shandong 257051 , P. R. China
摘要
针对胜坨油田二区9 - 10 单元的层间非均质和平面非均质性,运用水动力学方法,采用周期注水及增压注水改善单元的水驱油效果。经过6 a 的实施,单元的开发形势趋好,单元采收率提高9162 % ,增加可采储量34115 kt ,对同类型非均质性油藏改善水驱油效果,提高最终采收率具有借鉴意义。
Abstract
Based on the exploitable condition of unit 9-10 in second zone of Shengtou Oilfield ,the oil reservoir production feature is analyzed. Aimming at plane and interlayer anisotropism of the unit ,and combining with the principle of hydrodynamics , the effect of water displacing oil has been improved by periodic and supercharge water injection. During 5 years operation ,the dynamic production condition is getting better in this unit . Daily crude output is higher than past . The recovery efficiency in this unit has improved by 9. 62 %. The exploitable reserve has increased 341 ,500 tons. For the same type of anisotropism oil reservoir ,this method is valuable for improving the effect of water displacing oil and enhancing the final oil recovery efficiency.
关键词：
非均质油藏;
改善注水;
采收率;
高含水;
Keywords:
Anisotropic oil reservoir , Improved water injection , Recovery efficiency , Residual oil , Second zone in Shengtou oilfield , Ulrta-high water comtent period (UHWCP);
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