低压裂缝性储层小型测试压裂改造技术  

Small-scale test fracturing technology for low-pressure fractured reservoirs

作　　者：陈超峰 朱雪华 杨晓儒 严康 林铁林 CHEN Chaofeng;ZHU Xuehua;YANG Xiaoru;YAN Kang;LIN Tielin(Department of Exploration,PetroChina,Xinjiang Oilfield Company,Karamay,Xinjiang 834000,China;College of petroleum engineering,Yangtze University,Wuhan,Hubei 430100,China;Development Business Department,PetroChina Huabei Oilfield Company,Renqiu,Hebei 062552,China)

机构地区：[1]中国石油股份公司新疆油田分公司勘探事业部,新疆克拉玛依834000 [2]长江大学石油工程学院,湖北武汉430100 [3]中国石油华北油田分公司开发事业部,河北任丘062552

出　　处：《油气井测试》2018年第4期35-41,共7页Well Testing

基　　金：中石油股份公司重点工程技术攻关项目"准噶尔盆地复杂岩性低渗储层试油(含储层改造)配套技术研究"(2018-FD-04)

摘　　要：针对准噶尔盆地西北缘车排子凸起石炭系存在的储层裂缝发育、地层压力低、压裂加砂困难、返排率低等问题,基于储层高效开采目的,以石炭系重点探井储层改造为研究对象,开展综合前置液多段塞、前置液拌液氮增能及低密度支撑剂等工艺的小型测试压裂改造技术应用。CP13井现场应用研究表明,在修正的地质模型、优选施工工艺、优化施工参数条件下,经四段塞、11 m^3连续泵入液氮、70/140目和30/50目陶粒等处理改造后,该井日产油最高达26.16 m^3,日产气最高达0.382×104m^3,较改造前增产效果明显。小型测试压裂可以在类似低压裂缝性储层改造过程中推广应用以满足高效开发的生产需要。The Carboniferous reservoirs of the Chepaizi bulge in the northwestern margin of the Junggar Basin are characterized by fracture development,low formation pressure,difficulty in fracturing and sanding,and low flowback rate. In order to efficiently exploit the reservoir,this paper takes the reservoir stimulation of the key exploration wells of the Carboniferous system as the research object and carries out the application test of the small-scale test fracturing stimulation technology. The fracturing technology integrates several technologies,such as the pad fluid multi-slug,energy increasing of mixed liquid nitrogen with pad fluid and low-density proppant. Field application show that under the modified geological model,the preferred construction process and the optimized construction parameters,the daily oil production of the well CP13（ This well uses a four slug,continuously pumping 11 m3 of liquid nitrogen,and also uses 70/140 mesh and 30/50 mesh ceramist） can reach up to 26. 16 m3 and the daily gas production can reach up to 0. 382×10^4 m3,the stimulation effect is obvious. This fully demonstrates that small test fracturing can be applied in the stimulation process of the similar low-pressure fractured reservoirs to meet the production needs of efficient development.

关 键 词：低压 裂缝性储层 天然裂缝 测试压裂 多段塞 泵入液氮 低密度支撑剂 

分 类 号：TE348[石油与天然气工程—油气田开发工程]