碎软煤层水平井布置层位分析及钻完井设计优化  

Horizontal Well Layout Layer Analysis and Optimization of Drilling and Completion Technology in Crushed Soft Coal Seam

作　　者：庞涛[1,2] 姜在炳 王志嘉 李浩哲 宋永强 PANG Tao;JIANG Zaibing;WANG Zhijia;LI Haozhe;SONG Yongqiang(China Coal Research Institute,Beijing 100013,China;CCTEG Xi'an Research Institute(Group)Co.,Ltd.,Xi'an 710077,China;Xinjiang Branch,China Petroleum Logging Co.,Ltd.,Karamay 834000,China;Shaanxi CBM Development and Use Co.,Ltd.,Xi'an 710119,China)

机构地区：[1]煤炭科学研究总院,北京100013 [2]中煤科工西安研究院(集团)有限公司,西安710077 [3]中国石油集团测井有限公司新疆分公司,新疆克拉玛依834000 [4]陕西省煤层气开发利用有限公司,西安710119

出　　处：《煤炭技术》2023年第8期61-64,共4页Coal Technology

摘　　要：根据煤层特征归纳了煤层气水平井开发主要原则,讨论了水平井不同布置层位的优缺点,优选出了适应层位,提出井型和配套钻完井设计优化方法。结果表明:碎软煤层水平井应将水平段布置在煤层顶板中,采用U型井施工;采用大斜度导眼探煤能够更加准确地了解着陆点附近地层信息,利于着陆点设计,将入靶点设计在二开井段可以降低三开钻进难度;深穿透下向定向射孔工艺是顶板水平井开发的重要技术。现场应用取得了较好的产气效果,为后续技术推广提供工程技术手段和思路。The main principles of CBM horizontal well development are summarized,and the advantages and disadvantages of different horizontal well layout layers are discussed.It is adapted to the horizon and well type,and a matching drilling and completion process optimization method for roof wells is proposed.The research results show that:horizontal wells in broken and soft coal seams should be arranged in the roof strata of the coal seam,and U-type wells should be used for construction;the pilot hole coal exploration can more accurately understand the formation information near the landing point,which is beneficial to the design of the landing point,the design of the target entry point in the second opening section can reduce the difficulty of drilling the third opening and facilitate drilling in the horizontal section;deep penetration downward directional perforation technology is an important technology in the development of roof horizontal wells.The field application has achieved good gas production effect,which provides engineering technical means and ideas for the subsequent technology promotion.

关 键 词：煤层气水平井 布置层位 钻完井技术 设计优化 

分 类 号：TE243[石油与天然气工程—油气井工程] TE37