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时间:2020-04-05
《延川南煤层气低成本高效钻井技术探索与实践.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第43卷第5期石油钻探技术Vo1.43No.52015年9月PETR0LEUMDRILLINGTECHNIQUESSep.,2015..钻井完井doi:10.11911/syztjs.201505012延川南煤层气低成本高效钻井技术探索与实践沈建中,龙志平(中国石化华东分公司石油工程技术研究院,江苏南京210031)摘要:储层丰度低、单井产量低是制约煤层气开发的瓶颈,因此如何提高钻井效率、控制成本是实现煤层气有效开发的关键。在总结延川南煤层气区块前期钻井经验的基础上,引入“井工厂”钻井模式,重点开展了井组及施工工序优化、预偏离防碰、导向钻具、个性化钻头和高效堵漏等
2、降本增效技术的研究和实践,并利用学习曲线法对关键技术进行了持续优化,形成了煤层气低成本高效钻井技术。延川南煤层气区块808口井采用了煤层气低成本高效钻井技术,优质高效地完成了产能建设任务,其中平均单井钻井周期较产能建设前缩短3O.3以上,机械钻速提高了51.6以上。研究与实践表明,煤层气开发时应用“井工厂”钻井模式能够显著控制钻井成本,提高开发效率,实现煤层气有效开发。关键词:煤层气丛式井井工厂钻井学习曲线机械钻速中图分类号:TE249文献标志码:A文章编号:1001—0890(2015)05—0069—06ResearchandApplicationofLowC
3、ostandEfficientCBMDrillingTechnologyinSouthYanchuanShenJianzhong,LongZhiping(PetroleumEngineeringTechnologyResearchInstituteofSinopecEastChinaCompany,Nanjing,Jiangsu,210031,China)Abstract:Lowreservoirvolumeandlowsinglewellproductionarebottlenecksthatrestrictcoalbedmethane(CBM)developm
4、ent,SOhowtoimprovethedrillingefficiencyandhowtocontrolthecostsarethekeystotheeffectivedevelopmentofCBM.AftersummarizingthepreviousdrillingexperiencesinSouthYanchuanCBMblock,thewellfactorydrillingmodelwassuccessfullyappliedandmanytechnicalresearchandfieldapplicationsfocusedonreducingth
5、ecostandincreasingbenefitswerecarriedout.Techniquesin—eludedclusterwelloptimization,preventivedeviationanticollision,navigationalBHA,individualizedbitdesign,efficientleakstoppage,etc.Then,thelearningcurvewasusedtooptimizeandimprovekeytech—nologiesanddeveloplOWcostandefficientdrillingt
6、echnology.LowcostandefficientdrillingtechnologythatwasdevelopedintheSouthYanchuanCBMBlockwasappliedto808wellsandtheoperationswereperformedwithgoodqualityandhighefficiency。inwhichtheaveragesinglewelldrillingcyclewasshort—enedbymorethan30.3,andproductivityconstructionandpenetrationratew
7、ereimprovedbyover51.6%.TheapplicationshowedthatthewellfactorydrillingmodecouldbeemployedinthefieldofCBMdevelopmenttosignificantlycontro1drillingcosts,improvetheefficiencytocost—effectivelydevelopCBM.Keywords:coalbedmethane;clusterwells;wellfactory;drilling;learningcurve;penetrationrat
8、e煤层气储
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