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页数:5页
时间:2019-05-22
《鄂尔多斯盆地超低渗气藏钻井技术难点与对策》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36卷第5期石油钻采工艺V01.36No.52014年9月OILDRILLING&PR0DUCT10NTECHN0L0GYSept.2014文章编号:1000—7393(2014)05—0033—05doi:10.13639/j.odpt.2014.05.009鄂尔多斯盆地超低渗气藏钻井技术难点与对策岳艳芳仝少凯王小东王亚李善维郑宏婧(1.华北油田公司采油工程研究院,河北任丘062552;2.川庆钻探工程有限公司长庆井下技术作业公司,陕西成阳7120003.渤海钻探工程有限公司长庆石油工程事业
2、部,陕西西安710016)引用格式:岳艳芳,仝少凯,王小东,等.鄂尔多斯盆地超低渗气藏钻井技术难点与对策[J].石油钻采工艺,2014,36(5):33—37.摘要:针对鄂尔多斯盆地超低渗气藏开发井地层古老、砂砾岩及石英砂岩可钻性差、研磨性强、夹层多、非均质性强、有效应力高、井斜、井漏、井壁失稳、井喷、卡钻、跳钻等地层特性与井下复杂情况,从地质和工程2个因素分析了钻井过程中面临的技术难点,提出了优化钻具组合、优选钻头类型、优选钻井液、优化气层保护完井液、钻具失效预防等技术对策与措施。现场应用结果
3、表明,有效地解决了鄂尔多斯盆地山西组开发井的钻井难题,使该井实际钻井周期缩短30%,机械钻速提高10%,为鄂尔多斯盆地超低渗气藏开发井的有效钻进和储层保护提供了技术参考。关键词:鄂尔多斯盆地:超低渗气藏;开发井;钻井;钻具;技术对策中图分类号:TE242.6文献标识码:BDrillingtechnologydificultiesandcountermeasuresforultra-lowpermeabilitygaspoolsinOrdosBasinYUEYanfang,TONGSha0kai,
4、WANGXia0d0ng,WANGYa3,LIShanwei,ZHENGH0ngjing(1.ResearchInstituteofOilProductionEngineering,HuabeiOilfieldCompany,Renqiu062552,China;2.ChangqingDownholeServiceCompanyofChuanqingDrillingEngineeringCo,Ltd.,CNPC,Xianyang712000,China3.ChangqingPetroleumEn
5、gineeringDivision,BohaiDrillingEngineeringCo,Ltd.,Yi"an710016,China)Abstract:In1inewithformationcharacteristicsanddownholecomplicatedconditionslikeoldageofformationsindevelopmentwellsforultra—lowpermeabilitygaspoolsinOrdos,poordrillabilityofsandycong
6、lomerateandquartzsandstone,strongabrasion,toomanyinterbeds,highheterogeneity,higheffectivestress,holedeviation,lostcirculation,unstablewellbore,blowout,stuckpipe,bitbouncing,etc.,analysisoftechnicaldificultiesduringdrillingwasconductedintermsofgeolog
7、yandengineering,andtechnicalcoun—termeasuresandmeasureswereproposedregardingoptimizedBHA,optimizedbittypes,optimizeddrillingfluid,optimizedcompletionfluidforgasreservoirprotectionandpreventionofdrillstringfailure.Thefieldapplicationshowsthatthesemeas
8、leshaveeffectivelysolvedthedrillingdificultiesindevelopmentwellofShanxiwellgroupinOrdosBasin,andthedrillingcycleofthiswellwasreducedby30%anddrillingrateupby10%,providingtechnicalreferenceforeffectivedrillingofultra—lowpermeabilitygaspoolbydevelopment
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