欢迎来到天天文库
浏览记录
ID:36738756
大小:270.50 KB
页数:4页
时间:2019-05-14
《尼日利亚边际油田钻井实践及思考》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38卷第5期石油钻探技术Vo1.38NO.52O10年9月PEI、R()IEUMDRII1IN(TE【’HN1QUESSep.,2010doi:10.3969/j.issn.1001—0890.2010.05.019尼日利亚边际油田钻井实践及思考冯江鹏郭和明肖超田璐邢树宾(1.中国石化石油工程技术研究院,北京100101;2.中国石化国际石油勘探开发有限公司,北京100083)摘要:尼日利亚StubbCreek边际油田的S5井在钻井过程中,井下复杂情况频繁出现,导致二开侧钻3次,三开又因键槽卡钻无法解卡再次侧钻。分析认为其原因为:地层软泥岩水敏性极强;硬脆性
2、泥岩坍塌压力高,掉块严重;钻井液性能不能满足安全钻井的要求;定向井段井眼轨迹控制得不好,井身质量差;钻井主承包商人员经验不足。该油田在后续井的钻井中有针对性地采取了以下措施:用合成基钻井液替代水基钻井液;提高钻井液密度;控制井眼轨迹,提高井身质量;优选钻头;更换服务商和现场服务人员。后续的4口井由于采取了以上技术措施,保证了井下安全,有效提高了钻井速度,缩短了钻井周期,加快了StubbCreek边际油田的勘探开发速度。关键词:钻井;事故处理;合成基钻井液;井眼轨迹;尼日利亚;StubbCreek边际油田;S5井中图分类号:TE28文献标识码:B文章编号:100
3、1—0890(2010)05—0086—04Nigeria’SStubbCreekMarginalOilfieldDrillingPracticeandThinkingFengJiangpengGuoHemingXiaoChaoTianLuXingShubin(1ISinopecResearchInstituteofPetroleumEngineering,Beijing,100101,China;2.SinopecInter—nationalPetroleumExplorationandProductionCorporation,Beijing,100083
4、,China)Abstract:DuringthedrillingofWellS5inNageria’SStubbCreekmarginaloilfield,downholecompli—catedconditionsoccurredfrequentlyandresultedin3sidetracksinsecondspud,andsidetrackinthirdspudduetopipestuck.Theanalysisshowsthatthemainreasonsaretheextremelywater—sensitivesoftmud—stoneform
5、ation,brittlemudstonewithhighcollapsepressure,seriouscollapseduringdrilling,drillingfluidwhichcannotmeetthesafetyrequirements,poorwelltrajectorycontrolduringdirectionaldrilling,poorwellborequality,andlowtechnicallevelofprimecontractorpersonne1.Thefollowingmeasureswereusedinfollowupw
6、ells,includingusingsyntheticdrillingfluidsinsteadofwaterbaseddrillingfluids,increasingmuddensity,improvingwellboretrajectoryandwellborequality,usingdrillbitsuitableforthisformation,andreplacingserviceproviderandfieldservicepersonne1.Theapplicationsofalltheseinthefollowup4we11sensure
7、dthewellsafety,improvedtheROP,shortenedthedrillingcycleandacceleratedtheexplora—tionanddevelopmentpaceofStubbCreekmarginaloilfields.Keywords:drilling;accidenttreatment;syntheticbasedrillingfluid;holetrajectory;Nigeria;StubbCreek0ilfield;WellS5StubbCreek边际油田位于尼日利亚尼日尔三针对s5井钻井过程中出现的井下故
8、障或事故,认真角洲OML一14区块与O
此文档下载收益归作者所有