子北油田天然裂缝对长2油层组压裂工艺的影响及对策  

Influence of Natural Fractures on Fracturing Technology of Chang 2 Oil-bearing Formation in Zibei Oil Field and Countermeasures

作　　者：米乃哲[1] 罗然昊[2] 李旭芬[3] 李云[4] 康胜松[1] 何薛刚 

机构地区：[1]延长石油集团研究院,陕西西安710075 [2]延长油田股份有限公司永宁采油厂,陕西延安717500 [3]长安大学,陕西西安710054 [4]延长油田股份有限公司油气与天然气勘探开发部,陕西延安716000 [5]延长油田股份有限公司子北采油厂,陕西西安717300

出　　处：《辽宁化工》2013年第6期666-669,共4页Liaoning Chemical Industry

基　　金：国家科技支撑计划(2007BAB17B00)资助

摘　　要：低渗裂缝性油藏的开发一直以来是个难以解决的问题,尤其像子北油田这种底水发育的低渗裂缝油田更加难以开发。针对子北油田长2油层组人工压裂后油井高含水这一突出问题,通过详细研究子北油田天然裂缝发育情况和利用微地震监测人工裂缝产状,然后将二者仔细对比分析发现,长2油层组人工压裂裂缝多数受天然裂缝影响和控制。且受天然裂缝影响的人工裂缝垂直高度大,水平方向延伸不长,致使油层底水上窜,油井含水率高。为解决这一突出问题,文章提出适合子北油田长2油层组压裂工艺的改进建议。The development of low permeability fractured reservoirs is difficult,especially hypotonic cracks oilfield with abundant bottom water,like as Zibei oilfield.In this paper,aiming at high water content in oil wells of Chang 2 oil-bearing formation after artificial fracturing,natural fracture development was studied as well as utilization of micro-seismic for monitoring artificial fractures in Zibei oil field.The results indicate that artificial fractures of Chang 2 oil-bearing formation are controlled by natural fractures.Vertical height of the artificial fractures is big and its horizontal stretch is not long,which results high moisture content of oil well.To resolve the outstanding problems,improvement recommendations of fracturing process were put forward.

关 键 词：子北油田 长2油层组 天然裂缝 压裂 

分 类 号：TE357.1[石油与天然气工程—油气田开发工程]