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Geology Property and Water Injection Production Experiment of Qingpingchuan Oil Field
Author(s): 
Pages: 42-44
Year: Issue:  3
Journal: JOURNAL OF EARTH SCIENCES AND ENVIRONMENT

Keyword:  延长组低渗透性油藏油层敏感性采收率注水开发;
Abstract: 通过对岩石矿物、储层物性、油层敏感性和水驱油效果分析,在储层地质研究基础上,评价青平川油田长2油藏注水开发效果.研究结果表明,长2油藏含油砂岩以细粒长石砂岩为主,粘土矿物中绿泥石含量较高.储层物性差,属于典型的低渗透岩性油藏.水驱油实验结果表明,青平川油田长2 油层水驱油效果较好,油田最终驱油效率可达49.4%.先导性注水试验表明,注水开发可以使青平川油田产量在较短时间内得到大幅度提高,在注水后的第4到第7个月达到产量高峰期,第8个月后进入稳产期.油田注水开发产量递减规律分析表明初始递减律为0.0191(1/月).根据青平川长2油藏实际情况,认为注水开发能达到提高采油速度和油田最终采收率的目的.
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