泸州阳101井区深层页岩气压裂技术研究  

Research on deep shale gas fracturing technology in Luzhou Yang 101 well area

作　　者：田宝刚 邱伟 TIAN Baogang;QIU Wei(Downhole Special Operation Company of SINOPEC ZhongyuanPetroleum Engineering Co.,Ltd.,Puyang Henan 457164,China)

机构地区：[1]中国石化中原石油工程有限公司井下特种作业公司,河南濮阳457164

出　　处：《石油化工应用》2023年第8期72-76,共5页Petrochemical Industry Application

摘　　要：泸州阳101井区页岩气田埋深3600~4200 m,优质页岩储层厚度为35~40 m,孔隙度为4.5%~5.9%、TOC为2.5%~5.7%、含气量为4.8~8.1 m3/t、地层压力系数为1.2~1.5。通过测井解释及岩心分析表明,泸州阳101井区深层页岩脆性矿物及力学脆性指数较高,但两向水平应力差值大,在12.6~12.9 MPa,难以形成复杂体积缝网。针对压裂难点形成的“密切割+暂堵转向+连续高强度加砂、大排量、大液量”工艺成功应用于Y101H1-2井及Y101H4-5井,压后测试产量分别为46.80×10^(4)m^(3)/d和35.60×10^(4)m^(3)/d,取得了泸州阳101井区深层页岩气商业开发重大突破。The depth of shale gasfield is 3600~4200 m in Luzhou Yang 101 well area,the thickness of high quality shale reservoir is 35~40 m,porosity is 4.5%~5.9%,TOC is 2.5%~5.7%,gas content is 4.8~8.1 m3/t,formation pressure coefficient is 1.2~1.5.Through log interpretation and core analysis,it is shown that the brittle mineral and mechanical brittleness index of deep shale in Luzhou Yang 101 well area is high,but the difference of two-dimensional horizontal stress is large,and it is difficult to form complex volumetric fracture network between 12.6~12.9 MPa.The technology of"close cutting+temporary plugging turning+continuous high-strength sand adding,large displacement and large volume of fluid"was successfully applied to Y101H1-2 and Y101H4-5 wells,the test production after compression is 468000 and 356000 cubic meters per day respectively,which has made a great breakthrough in the commercial development of deep shale gas in Luzhou Yang 101 well area.

关 键 词：泸州区块 深层页岩气 体积压裂 密切割分段 暂堵转向 

分 类 号：TE357.11[石油与天然气工程—油气田开发工程]