吉木萨尔页岩油水平井体积压裂技术实践与认识  

Practice and Understanding of Volume Fracturing Technology for Horizontal Wells in Jimsar Shale Oil Reservoir

作　　者：许江文[1] 王明星[1] 王俊超[1] 孙浩然[1] 王亮[1] XU Jiangwen;WANG Mingxing;WANG Junchao;SUN Haoran;WANG Liang(Oil Production Technology Research Institute,PetroChina Xinjiang Oilfield Company,Karamay 834000,Xinjiang,China)

机构地区：[1]新疆油田公司采油工艺研究院,新疆克拉玛依834000

出　　处：《新疆石油天然气》2024年第3期23-29,共7页Xinjiang Oil & Gas

基　　金：中国石油天然气股份有限公司科技专项课题“多类型页岩油个性化压裂技术与试验”(2023ZZ28YJ04)。

摘　　要：针对吉木萨尔页岩油储层,围绕提升缝控储量目标,从缝网设计、缝网构建、有效支撑和提升基质内原油动用能力四个方面开展了理论研究与技术实践,完成了三代技术革新,攻克了薄互层裂缝有效扩展等基础理论和段内多簇工艺、低成本材料等关键技术,集成了以缝藏匹配、精准改造、多尺度支撑、CO_(2)前置为核心的水平井体积压裂技术体系,压裂关键技术指标达到国内先进水平,支撑了吉木萨尔页岩油的规模效益开发。2023年吉木萨尔页岩油产油量突破60×10^(4) t,连续三年区块年产量增幅超过10×10^(4) t,为2025年我国首个国家级陆相页岩油示范区的高效建成提供了坚实的技术支撑,也为我国其它页岩油开发技术优化提供借鉴。Addressing Jimsar shale oil reservoir,this study aims to enhance fracture-controlled reserves by conducting theoretical re-search and technical practices.Focused on four key aspects—fracture network design,construction,proppant effectiveness,and the enhancement of in-situ oil mobility,three generations of technological advancements have been realized.Fundamental theories regard-ing the effective propagation of hydraulic fracture in thin interlayers and key technologies such as multi-cluster fracturing within a stage and the use of cost-effective materials have been mastered.An integrated horizontal well volume fracturing technology system centered on fracture-matrix matching,precise stimulation,multi-scale proppant support,and CO_(2) prepad injection has been devel-oped.The key technical indicators of fracturing have reached the advanced domestic level,supporting the large-scale and efficient de-velopment of Jimsar shale oil.In 2023,the oil production of Jimsar shale oil surpassed 60×10^(4)t,with a consecutive annual production increase of 10×10^(4)t in the block for three years.This achievement has provided robust technical support for the establishment of Chi-na's first national continental shale oil demonstration zone by 2025 and serves as a reference for optimizing shale oil development tech-nologies in other regions of China.

关 键 词：水平井体积压裂技术 页岩油 吉木萨尔凹陷 芦草沟组 CO_(2)前置压裂 

分 类 号：TE357.13[石油与天然气工程—油气田开发工程]