裂缝性地层压裂降滤失技术应用研究  

Research on Filtration Control Technology of Fracturing Fluid in Fractured Formation

作　　者：王艳芬 孔丽娜[2] 成一 刘炜 

机构地区：[1]中国石油新疆油田分公司工程技术研究院 [2]中国石油新疆油田分公司勘探开发研究院

出　　处：《钻井液与完井液》2013年第5期71-74,100,共4页Drilling Fluid & Completion Fluid

摘　　要：针对裂缝性地层天然裂缝发育导致压裂液滤失大、施工过程中加砂困难的问题,提出二元滤失控制方法——前置液段塞和降滤失剂技术。以新疆油田古53井区火山岩储层为例研究了前置液量,前置液段塞浓度、导流能力、粉砂粒径和施工排量对控制滤失的作用;筛选评价了一种可降低压裂液滤失并对地层无伤害的油溶性降滤失剂,软件模拟表明,当其加量为3%时即可以明显提高压裂液效率。二元降滤失技术的现场应用对裂缝性油藏压裂的成功率具有一定的指导意义。The problems of high filtration lose and hard carrying out sand in fractured formation are encountered,dual filtration lost control technology composed by spacer plug and filtration reducer is developed.Gu 53 well volcano rock reservoir of Xinjiang Oilfield is taken as example to research.Several influence factors on filtration control are discussed,such as dosage and concentration of spacer plug,fracture conductivity and sand diameter.A type of oil soluble fluid loss agent is selected,which can improve the efficiency of fracturing fluid notably.

关 键 词：天然裂缝 滤失 加砂压裂 段塞 降滤失剂 

分 类 号：TE357.12[石油与天然气工程—油气田开发工程]