黔北安场向斜页岩气井返排特征及影响因素研究  

Study on flowback characteristics and influencing factors of syncline shale gas wells in Anchang,Northern Guizhou Province

作　　者：刘磊 LIU Lei(Sinopec Oilfield Service Jianghan Corporation, Wuhan 430074, China)

机构地区：[1]中石化江汉石油工程有限公司,湖北武汉430074

出　　处：《江汉石油职工大学学报》2022年第3期51-53,共3页Journal of Jianghan Petroleum University of Staff and Workers

摘　　要：黔北安场向斜地区五峰组-龙马溪组为常压地层,压力系数小于1.0,地层能量不足,为更好的探究常压页岩气返排特征及地质影响因素,通过钻、测、录、试资料及页岩实验测试等,系统分析该地区页岩储层特征、页岩气井返排特征及影响因素。通过分析得出页岩气井返排率地质工程因素主要有页岩含气性、水平段穿层、试气长度、加砂强度、簇间距及压裂液性能。Wufeng-Longmaxi Formations in Anchang syncline area,northern Guizhou Province,are normal pressure reservoirs,with the pressure coefficient less than 1.0 and insufficient reservoir energy.In order to better explore the flowback characteristics and geological influencing factors of normal shale gas,we systematically analyzed the characteristics of shale reservoirs,flowback characteristics and influencing factors of shale gas wells in this area based on the data of drilling,well logging,mud logging and testing as well as lab testing of shale.It is concluded that the geoengineering factors of the flowback rate of shale gas wells are:gas content of shale,layer penetration rate of a horizontal section,gas testing interval,proppant loading intensity,cluster spacing and fracture fluid performance.

关 键 词：五峰组-龙马溪组 常压地层 返排特征 两相过渡 返排率 

分 类 号：TE357.14[石油与天然气工程—油气田开发工程]