| 川西中浅层水平井分段加砂压裂改造技术 |
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| 引用本文： | 张家由,慈建发,任山,刘林,黄禹忠,林立世,滕小兰.川西中浅层水平井分段加砂压裂改造技术[J].中外能源,2011,16(2):70-75. |
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| 作者姓名： | 张家由 慈建发 任山 刘林 黄禹忠 林立世 滕小兰 |
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| 作者单位： | 中国石化西南油气分公司工程技术研究院,四川德阳,618000 |
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| 摘 要： | 针对川西低渗透气藏高温、高压、储层品质差、气井控制半径小、产量递减快、气藏整体采收率低等问题,在对水平井分段压裂适应性分析基础上,将常规水平喷射技术应用于水平井分段压裂,形成水平井不动管柱滑套水力喷射分段压裂及其配套技术。裂缝参数优化结果表明,在水平井段长为600m时,裂缝条数4~5条、裂缝半长120~140m,且中间裂缝较短,两端裂缝较长,两端裂缝间距小,中间裂缝间距大的裂缝组合,是实现分段压裂水平井产能最大化的保证。针对水平井压裂施工多裂缝易砂堵、长水平段支撑剂传输沉降等风险,通过工具改进,结合支撑剂段塞、防砂控砂,以及高效返排工艺技术,形成有效风险防控措施,保证顺利施工和安全生产。现场试验对比结果表明,新技术应用降低施工成本,提高气井单井产能,压裂水平井产能较邻井直井产能增大2倍以上。对比气井压后稳产情况可以看出,水平井稳产能力优于相邻压裂直井,在难动用储量的高效开发上表现出一定优势。
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| 关 键 词： | 水平井 分段压裂 水力喷射 裂缝参数 封隔器 储层改造 |
The Study of Horizontal Segregated Fracturing Technology in the Medium-shallow Reservoirs of Western Sichuan |
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| Zhang Jiayou,Ci Jianfa,Ren Shan,Liu Lin,Huang Yuzhong,Lin Lishi,Teng Xiaolan.The Study of Horizontal Segregated Fracturing Technology in the Medium-shallow Reservoirs of Western Sichuan[J].China Foreigh Energy,2011,16(2):70-75. |
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| Authors: | Zhang Jiayou Ci Jianfa Ren Shan Liu Lin Huang Yuzhong Lin Lishi Teng Xiaolan |
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| Affiliation: | Zhang Jiayou,Ci Jianfa,Ren Shan,Liu Lin,Huang Yuzhong,Lin Lishi,Teng Xiaolan(Engineering Technology Research Institute of SINOPEC Southwest Oil & Gas Company,Deyang Sichuan 618000) |
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| Abstract: | Low permeability gas reservoirs of western Sichuan have the issues of high temperature,high pressure,poor quality,small radius of gas wells,rapid production decline,and low overall recovery.Based on the adaptability analysis about segregated fracturing of the horizontal wells,the conventional hydrajetting technology is applied to horizontal segregated fracturing,and the hydrajetting segregated fracturing by immovable string sleeve and its matching technology are formed.Fracture parameter optimization result... |
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| Keywords: | horizontal well segregated fracturing hydrajetting fracture parameter packer reservoir stimulation |
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