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时间:2019-05-13
《塔里木深井薄油层旋转地质导向钻井技术应用》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、石油勘探与开发2053年l2月PETR0LEUMEXPL0RATIONANDDEVEL0PMENTVO1.40NO.6747文章编号:1000—0747(2013)06-0747—05DOI:10.I1698/PED.2053.06.16塔里木深井薄油层旋转地质导向钻井技术应用张程光一,吴千里,王孝亮2,吕宁(1.中国石油钻井工程技术研究院;2.中国石油塔里木油田公司;3.中国石化石油212程公司胜利分公司)基金项目:国家重大专项课题“旋转导向及随钻测录、酸性气层测试技术与装备”(2011ZX05021—005)摘要:针对塔里木油田某区块薄油层埋藏深、厚
2、度小且构造边缘横向发育不稳定的问题,5I入旋转地质导向钻井技术,结合实例分析了该技术的现场应用效果,总结了出现的问题及可供其他类似油田借鉴的经验。通过分析塔里木油田某区块薄油层的钻井技术难点,阐述了引入旋转地质导向的可行性和必要性,介绍了该技术的工作原理及主要工具。以该区块完钻的某双台阶水平井为例,分析了旋转地质导向技术的作业特点及应用效果,结果表明:旋转地质导向平均机械钻速较高,在厚度不足1m的油层中平均钻遇率可达82%,消除了使用螺杆钻具滑动钻进时的托压问题,且使井眼更平滑、清洁。总结了现场应用中存在的导向工具造斜率影响因素多、MWD传输信号受干扰、
3、工具工作性能不稳定等问题,提出了应对措施及可供其他油田借鉴的经验。图2表2参14关键词:水平井;钻井;旋转地质导向;深井薄油层;随钻测井中图分类号:TE243文献标识码:AApplicationofrotarygeosteeringdrillingindeepandthinreservoirsofTarimBasinZhangChengguang一,WuQianli,WangXiaoliang,LtiNing(1.CNPCDrillingResearchInstitute,BeUing100083,China;2.CNPCTarimOilfieldCom
4、pany,Korla841000,China;3.SinopecShengLiOilfieldCompany,Dongying257001,China)Abstract:Geologicalfeatures,suchasdeepandthinreservoirsandunstablestructuremargin,occur1nanoilfieldoftheTarimBasin.Todealwiththeseproblemswhiledrilling,arotarygeosteeringdrillingtechniquewasintroduced.The
5、efectofitsapplicationwasanalyzedwithanexample,theshortcomingsweresummarized,andsuggestionsweregivenforotheroilfileds.Thefeasibilityandnecessityofusingrotarygeosteeringdrillingwerepresentedaccordingtotheengineeringchallengesintheoilfield,thenthetheoryandmaintoolsofitwereintroduced
6、.Focusingonadouble—stephorizontalwellinfieldapplication,thefeaturesandefectsofthistechniquewereelaborated.Withrotarygeosteeringdrillinginthiswell,theaveragerateofpenetrationwashighandoilreservoirencounteringratewasupto82%inthinlayerslessthan1m.Also,itavoidedefortlessweightonbitin
7、slidingdrillingmethodandmadethewellboremoresmoothandclean.Theproblemsmetwereconcluded,forexample,thetoolsbuild—upratewasafectedbyseveralfactors,measurementwhiledrilling(MWD)signalwasinterfered,andthetoolsworkingperformancewasunstable.Suggestionswereputforwardforapplyingtherotaryg
8、eosteeringdrillingtechniqueinotheroilfie
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