摘要
随着我国油气对外依存度逐渐加剧,致密油气、页岩油气等非常规油气能源成为了我国能源发展的重点方向。井工厂压裂技术因其可以改造低渗透性地层、大幅降低施工成本、缩短施工周期、提高设备利用率、节约用地而被广泛应用于非常规油气开发之中。本文在论述井工厂压裂技术发展现状的基础上,介绍了丛式水平井的井筒走向、水平段长度、井筒间距等井网部署特点,统计分析了水平井分段分簇的裂缝长度、簇间距和射孔簇数等关键技术参数特点;介绍了丛式水平井井工厂压裂常用的压裂方式,包括双井同步压裂、双井拉链式压裂和多井组合压裂等,对比分析了各种压裂方式的利弊。建议有针对性的发展立体井网井间裂缝干扰预测、井丛压裂孔簇设计等理论,为我国非常规油气储层井工厂压裂技术发展指明了方向。
With the increasing dependence on foreign oil and gas,unconventional oil and gas energy such as tight oil and gas and shale oil and gas have become the focus of China’s energy development.Well factory fracturing technology is widely used in unconventional oil and gas development because it can reconstruct low⁃permeability formations,significantly reduce construction costs,shorten construction time,improve equipment and land utilization.Based on the discussion of the development status of well factory fracturing technology,this paper introduces the well pattern deployment characteristics of cluster horizontal wells,such as wellbore direction,length of horizontal sections,wellbore spacing and further statistically analyzes the key technical parameters of horizontal wells in segmented clusters,such as fracture length,cluster spacing and perforating cluster number.Moreover,the fracturing methods commonly used in cluster horizontal well factory fracturing are also introduced,including dual⁃wells simultaneous fracturing,dual⁃well zipper fracturing and multi⁃well combination fracturing,and the advantages and disadvantages of the common fracturing methods are analyzed by contrast.It is suggested that the theories such as prediction of interwell fracture interference and well cluster fracturing perforation cluster design should be developed.The research points out the direction for the development of well fracturing technologies for unconventional oil and gas reservoir in China.
作者
王遵察
程万
艾昆
胡清海
石育钊
WANG Zuncha;CHENG Wan;AI Kun;HU Qinghai;SHI Yuzhao(Faculty of Engineering,China University of Geosciences(Wuhan),Wuhan Hubei 430074,China;Sinopec NorthChina Petroleum Engineering Co.,Ltd.,Zhengzhou Henan 450006,China)
出处
《钻探工程》
2024年第3期9-19,共11页
Drilling Engineering
基金
国家自然科学基金面上项目“深部弱塑性页岩气储层密切割压裂裂缝均衡扩展行为研究”(编号:52074250)。
关键词
水力压裂
井工厂压裂
丛式水平井
分段分簇
井网部署
井丛压裂
立体井网
非常规油气
hydraulic fracturing
well factory fracturing
cluster horizontal well
segment clustering
well pattern deployment
cluster fracturing
three⁃dimensional well pattern
unconventional oil and gas
