大倾角厚煤层煤层气开发水平井方位优化和实践——以新疆阜康矿区为例  

Optimization and practice of horizontal well azimuth in thick and high dip-angle coalbed in Fukang mining area

作　　者：曹运兴 石玢 田林 杨雪松 何茂 CAO Yunxing;SHI Bin;TIAN Lin;YANG Xuesong;HE Mao(Engineering Research Center of Coalbed Methane/Gas Geology,Henan Polytechnic University,Jiaozuo 454000,China;Collaborative Innovation Center of Coalbed Methane and Shale Gas for Central Plains Economic Region,Henan Province,Jiaozuo 454000,China;College of Safety Science and Engineering,Henan Polytechnic University,Jiaozuo 454000,China;Xinjiang Cleanseed New Energy Co.,Ltd,Fukang 831500,China)

机构地区：[1]河南理工大学煤层气/瓦斯地质工程研究中心,河南焦作454000 [2]中原经济区煤层/页岩气协同创新中心,河南焦作454000 [3]河南理工大学安全科学与工程学院,河南焦作454000 [4]新疆科林思德新能源有限责任公司,新疆阜康831500

出　　处：《煤田地质与勘探》2018年第2期90-96,共7页Coal Geology & Exploration

摘　　要：为解决阜康矿区大倾角厚煤层水平井眼轨迹布井方位问题,应用COMET3软件建立储层地质模型并模拟了9种不同方位的水平井眼轨迹的产能潜力。模拟结果显示,水平井眼轨迹沿煤层上倾方向布置时,累计产气量随着井眼轨迹与煤层走向夹角的增加而小幅度降低;沿煤层下倾方向布置时,累计产气量随着井眼轨迹与煤层走向夹角的增加而大幅度降低。研究成果表明:大倾角条件下,高产煤层气水平井的井眼轨迹方位应沿煤层走向布置,或者沿煤层走向小角度向上摆动,阜康矿区西部开发的第一口煤层气水平井的生产结果证明了这一技术方案的可行性,这一研究成果对新疆类似储层地质条件下的煤层气高效开发技术优化具有指导和借鉴意义。In order to solve the problem of horizontal borehole azimuth in thick and high dip-angle coalbed in Fukang mining area,a comprehensive reservoir modeling and productivity prediction for nine different horizontal borehole trajectory azimuth was completed by using the COMET3.The results show that when the horizontal borehole trajectory was at updip direction,the coal seam strike,the cumulative gas production decreased slightly with increase of the included angle of seam strike and horizontal w ell trajectory;When the horizontal w ell trajectory was at downdip direction,the cumulative gas production decreased greatly with increase of the included angle.Research results revealed that the best direction of horizontal borehole should be built up along the coal seam strike or swing at small angle along the coal seam strike.The first horizontal CBM w ell completed in the west of Fukang mining area has confirmed the technical feasibility of these analyses,and the research results have great guidance and reference significance for optimization technology of CBM efficient development in similar reservoirs of Xinjiang.

关 键 词：新疆 水平井 井眼方位 COMET3 模拟优化 

分 类 号：TE122.2[石油与天然气工程—油气勘探]