白家海凸起深层煤层气压裂试气实践与认识  

Practice and Understanding of Deep CBM Fracturing Gas Testing in Baijiahai Uplift

作　　者：倪方杰 NI Fangjie(Shale Gas Production Technique Service Company,Sinopec Oilfield Service Jianghan Corporation,Wuhan,Hubei,430042,China)

机构地区：[1]中石化江汉石油工程有限公司页岩气开采技术服务公司

出　　处：《江汉石油职工大学学报》2019年第5期36-38,共3页Journal of Jianghan Petroleum University of Staff and Workers

摘　　要：埋深超过1000m的深层煤层气因其赋存状态研究较少,产出条件又不同于浅层煤层气压裂试气工艺要求,勘探开发技术难度大。基于准噶尔盆地东部白家海地区彩A井和彩B井的压裂实践,认为白家海地区煤层埋深大于1500m,煤层气符合中煤阶肥煤特征,储层富集以游离气为主,其压裂试气宜采用“低粘液、大排量、大液量、高砂比”压裂改造措施和“螺杆泵+直读压力计+套管控压”的排液工艺。Due to the lack of research on the occurrence state of deep CBM with buried depth of more than 1000m and CBM fracturing gas testing requirement different from the shallow CBM because of their production conditions,the exploration and development technology is difficult.Based on fracturing practice in Cai A well and Cai B well of Baijiahai Area in the east of Junggar Basin,it is believed that buried depth of coal seam in Baijiahai Area is greater than 1,500 m,and its CBM is in line with the mid-coal rank fat coal characteristics mainly with free gas reservoir.The gas fracturing test should be completed by taking fracturing measures of low viscosity fluid,large displacement,large liquid volume and high sand ratio and using drainage technology of screw pump+direct reading gauge+casing pipe control pressure.

关 键 词：准噶尔盆 白家海凸 深层煤层气 压裂试气工艺 

分 类 号：TE357[石油与天然气工程—油气田开发工程]