裂缝性致密油藏水平井缝间增产方法  

Fracture⁃to⁃fracture stimulation method for horizontal wells in fractured tight reservoir

作　　者：邸士莹 赵云飞 马收 魏玉华 程时清[2] 缪立南 DI Shiying;ZHAO Yunfei;MA Shou;WEI Yuhua;CHENG Shiqing;MIAO Linan(SinoFTS Petroleum Services Ltd.of Sinopec East China Petroleum Engineering Company,Beijing 100101,China;College of Petroleum Engineering,China University of Petroleum(Beijing),Beijing 102249,China;Development Department of PetroChina Daqing Oilfield Co.,Ltd.,Daqing 163453,China;Logging&Testing Services Company of PetroChina Daqing Oilfield Co.,Ltd.,Daqing 163413,China)

机构地区：[1]中国石化华东石油工程公司华美孚泰公司,北京100101 [2]中国石油大学(北京)石油工程学院,北京102249 [3]中国石油大庆油田有限责任公司开发事业部,黑龙江大庆163453 [4]中国石油大庆油田有限责任公司测试分公司,黑龙江大庆163413

出　　处：《大庆石油地质与开发》2025年第1期168-174,共7页Petroleum Geology & Oilfield Development in Daqing

基　　金：国家自然科学基金项目“致密油藏注水诱发微裂缝机理反演化方法”(11872073);中国石化华东石油工程有限公司项目“页岩水力压裂天然裂缝扩展规律研究”(AXBG230015)。

摘　　要：致密油藏水平井经过多轮次的注水吞吐开采后,地层压力和产量下降快。针对致密油藏注水困难和水平井缝间干扰的问题,利用注水诱发天然裂缝扩展机理、面积注水开发方法及同井注采原理,从井网、管柱设计、注采工作制度方面,以致密油藏M区块为例对水平井缝间增产方法进行研究;提出多井缝间面积注水开发方式,设计匹配实际区块的管柱工艺,设置同时注采和间注间采2种注采制度,模拟实际井组生产10 a,参考多项指标探讨缝间面积注水方法开发方式的可行性。实例分析结果表明:缝间面积注水方法能够促使注入水均匀径向推进,消除缝间干扰、扩大注水波及范围,增强驱替作用,大幅提高累计产油量。研究成果可为致密油藏水平井多井缝间面积注水开发方式提供依据。The formation pressure and production of horizontal wells in tight reservoirs decrease rapidly after several rounds of water injection huff and puff.Facing the challenge of water injection difficulty and fracture-to-fracture interference of horizontal wells in tight reservoir,from the aspects of well pattern,string design and injection-produc‐tion system,taking tight-reservoir Block M as an example,fracture-to-fracture stimulation method of horizontal wells is studied by using mechanism of natural fracture propagation induced by water injection,areal water injection method and principle of injection-production in same well.Multi-well fracture-to-fracture areal water injection development method is proposed to design string technique matching actual block.2 injection-production systems are set up including simultaneous injection-production system and asynchronous injection-production system,simulates actual well pattern production for 10 a,and discusses feasibility of fracture-to-fracture areal water injection develop‐ment method with several indexes.Case analysis results show that fracture-to-fracture areal water injection method can promote uniform radial advance of injected water,eliminate fracture-to-fracture interference,expand injected water sweep range,enhance displacement effect,and greatly increase cumulative oil production.The research provides basis for fracture-to-fracture areal water injection development of horizontal wells in tight oil reservoirs.

关 键 词：致密油藏 水平井 面积注水 缝间增产 类反七点法 

分 类 号：TE348[石油与天然气工程—油气田开发工程]