龙女寺构造须家河组低效气藏压裂改造技术  

Hydraulic Fracturing Technologies of Low Efficient Gas Reservoir in Xujiahe Formation of Longnvsi Structure

作　　者：白雪静[1] 春兰 杨兆中[1] 李小刚[1] 曾珠[3] 

机构地区：[1]西南石油大学石油工程学院,四川成都610500 [2]中国石油西南油气田低效油气开发事业部,四川成都610017 [3]中国石油西南油气田公司川中油气矿,四川遂宁629000

出　　处：《天然气与石油》2011年第4期50-53,80,共5页Natural Gas and Oil

基　　金：教育部"高等学校博士学科点专项科研基金"联合资助课题(20095121110001)

摘　　要：龙女寺构造须家河组气藏具有低孔低渗和特低孔特低渗特征,加砂压裂是主要投产或增产方法。但该气藏储层物性差、储量丰度低、非均质性强,增产改造效果难以保证。在分析储层的岩性和物性特征基础上,总结该区块加砂压裂的难点,进而提出测试压裂、支撑剂段塞、拟线性加砂、快速返排等一系列提高压裂效果的技术对策。实施6口井(7井次)的加砂压裂现场试验,施工成功率70%,获得测试产量16.78×104 m3/d,为该气藏今后压裂改造效果的提高奠定了基础。The gas reservoir in Xujiahe formation of Longnvsi structure is characterized with low porosity and low permeability or ultra-low porosity and ultra-low permeability and hydraulic fracturing is the main method of its commissioning and yield increase.However,because of poor physical properties,low reservoir abundance and severe heterogeneity,it is difficult to ensure the fracturing result of this gas reservoir.Analyzed are the characteristics of lithology and physical properties of the gas reservoir,summarized are difficulties of hydraulic fracturing in this area and put forward are a series of such techniques for improving hydraulic fracturing effects as testing fracturing,propping agent slug,quasi-linear sand-adding fracturing and rapid flow-back.Conducted is sand-adding fracturing field test on six wells and the rate of successful stimulation reaches up to 70% and the testing production is 16.78×104m3/d,which lays a foundation for improving the fracturing effect of such gas reservoirs.

关 键 词：低效气藏 压裂 龙女寺构造 须家河组 

分 类 号：P618.13[天文地球—矿床学]