中高渗复杂断块油田提高水驱采收率技术

Technology to Improve Water Drive Recovery Efficiency of Mid-High Permeability Complicated FaultBlock Reservoir

王寿平¹ 邓瑞健² 李　琪³ 周跃忠²

1. 中原油田分公司，2. 中原油田分公司勘探开发科学研究院，3. 中原油田分公司开发事业部

Zhongyuan Oilfield Company , SINOPEC, Henan 457001 , P. R. China

中高渗复杂断块油藏在中国陆上已开发油田中占有较大比例,目前开发水平不一, Ⅲ类开发水平油藏的比例较高,提高水驱采收率潜力较大。从开发初期调整完善注采井网、扩边增储、剩余油研究及配套挖潜技术等方面,对中高渗复杂断块油田不同开发阶段提高水驱采收率做法和效果进行了总结与分析;针对剩余油分布形式及提高采收率潜力的分布,从地震技术、油藏精细描述技术、水平井钻井技术等方面,提出了中高渗复杂断块油田进一步提高水驱采收率的主导措施。

Mid-high permeability complicated fault block reservoirs hold a large portion of developing continental oilfields in China , which have different development level , and of which Ⅲ class development level reservoirs are taking account for high portion and have high potential. Through adjusting and perfecting injection-production well pattern , enlarging reservoir boundary and increasing reserves , residual oil studying and suitable potential excavating technologies , the treatments and effects of improving water drive recovery efficiency of mid-high permeability complicated faulted block reservoirs in different development stages are analyzed and summarized. According to residual oil distribution form and distribution of improving recovery efficiency potential ,main treatment to further improve recovery efficiency of mid-high permeability complicated fault block reservoir is provided in the article.