煤层气井压裂后快速返排技术研究及应用  

Research and Application of Rapid CBM Well Fracturing Flowback Technology

作　　者：田跃儒 于吉 郭剑 李春 TIAN Yue-ru;YU Ji;GUO Jian;LI Chun(EnerTech-Drilling and Production Co., CNOOC, Tianjin 300457, Chin)

机构地区：[1]中海油能源发展股份有限公司工程技术分公司,天津300457

出　　处：《煤炭技术》2018年第5期176-178,共3页Coal Technology

摘　　要：煤层气井压裂后返排技术对煤层气井产气量起到至关重要的作用。针对煤层气井压裂液伤害的特点,通过对煤层气压裂工艺原理、水锁伤害及水敏伤害的研究,在柳林区块选取3口井进行试验。认为利用控制放喷的手段,在控制出砂的条件下,短时间内尽快多地返排出压裂液有利于煤层气产气。The back-flow plays a key role in gas production in the CBM well after fracturing. According to characteristics of fracturing fluid damage in coalbed methane well,through principle of coalbed gas fracturing technology,water lock damage and water sensitivity damage,three wells were applied in the study. It is believed that rapid back-flow is beneficial to gas production of coal-bed methane ,and by using the method of controlled release,fracturing fluid is discharged as soon as possible in shortest time.

关 键 词：压裂液 快速返排 研究与应用 

分 类 号：TE371[石油与天然气工程—油气田开发工程]