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时间:2020-04-02
《鄂尔多斯盆地水平井多级滑套分段压裂技术_秦金立.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1期石油钻探技术Vol.43No.12015年1月PETROLEUMDRILLINGTECHNIQUESJan.,2015页岩气压裂技术专题doi:10.11911/syztjs.201501002鄂尔多斯盆地水平井多级滑套分段压裂技术秦金立1,陈作1,杨同玉2,戴文潮1,吴春方1(1.中国石化石油工程技术研究院,北京100101;2.中国石化华北分公司,河南郑州450006)摘要:鄂尔多斯盆地大牛地气田和红河油田长水平段裸眼水平井分段压裂时,存在长水平段一次性分隔、裂缝发育与井径扩大井段的有效封隔等问题,针对其地质条件、裂缝发育情况及井眼轨迹与井径变
2、化情况,研制了裸眼水平井多级滑套分段压裂工具,形成了裸眼水平井多级滑套分段压裂技术。该技术在鄂尔多斯盆地20余口水平井进行了应用,共完成了200段的压裂施工。应用结果表明:包含裸眼水平井多级滑套分段压裂工具的完井管柱下入顺利,封隔器封隔有效,滑套打开成功率100%,压裂后增产效果良好。这表明裸眼水平井多级滑套分段压裂技术可以解决大牛地气田和红河油田长水平段裸眼水平井分段压裂中存在的问题,可在鄂尔多斯盆地进行大规模推广应用。关键词:水平井滑套封隔器分段压裂鄂尔多斯盆地红河油田大牛地气田中图分类号:TE254文献标识码:A文章编号:1001-0890(2015)01-0
3、007-06TechnologyofStagedFracturingwithMulti-StageSleevesforHorizontalWellsintheOrdosBasin1,ChenZuo1,YangTongyu2,DaiWenchao1,WuChunfang1QinJinli(1.SinopecResearchInstituteofPetroleumEngineering,Beijing,100101,China;2.SinopecHuabeiCompany,Zhengzhou,Henan,450006,China)Abstract:Duringopen-
4、holestagedfracturingoperationinhorizontalwellsofDaniudiGasFieldandHongheOilfieldintheErdosBasin,therewerechallengessuchastheseparationoflonghorizontalsectionsinonetrip,thedevelopmentofnaturalfracturesandineffectiveisolationduetoholeenlargement.Consider-ingthegeologicalconditions,welltr
5、ajectoryandholediameterchangesinbothfields,thestagedfracturingtoolswithmulti-stagesleevesforopenholeinhorizontalwellsweredevelopedandrelevantoperationtech-niqueswereestablished.Thetoolswereappliedinmorethan20wellsintheErdosBasinwithtotally200stagesfractured.Fieldapplicationsachievedgoo
6、dresults,includingthesmoothrunningofthecompletionstringofthestagedfracturingtoolswithmulti-stagesleeveforopenholeinhorizontalwells,effectiveseal-ingofpacker,sleeveopeningwithhighsuccessrate,anddramaticincreaseofproductionafterfracturing.Theseprovedthatthesetoolscouldsolvetheproblemstha
7、toccurredinopenholestagedfracturingopera-tionsinDaniudiGasFieldandHongheOilfield,andareappropriateforintensiveapplicationintheErdosBasin.Keywords:horizontalwell;sleeve;packer;stagedfracturing;ErdosBasin;HongheOilfield;DaniudiGasfield大牛地气田位于鄂尔多斯盆地东北部,储量丰均孔隙度11.9%,渗透率0.85mD,属于典型的低富,发育下
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