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1、第38卷第1期石油钻采工艺Vol.38No.12016年1月OILDRILLING&PRODUCTIONTECHNOLOGYJan.2016文章编号:1000–7393(2016)01–0001–04DOI:10.13639/j.odpt.2016.01.001大庆油田第一口深层天然气双分支水平井钻完井实践潘荣山 张凯 李继丰 白秋月大庆油田有限责任公司采油工程研究院引用格式:潘荣山,张凯,李继丰,白秋月.大庆油田第一口深层天然气双分支水平井钻完井实践[J].石油钻采工艺,2016,38(1):
2、1-4.摘要:大庆昌德深层气田属于火山岩储层,岩性多为致密火山岩、砂砾岩等,而且含夹层,可钻性差,施工难度很大,为了最大程度地增加储层接触面积及油藏动用程度,特在该气田开展了第一口双分支水平井芳深6-双平1井施工。该双分支井眼的水平段长度均在1300m以上,侧钻和水平段施工技术难度高。参考已钻邻井资料,结合地层特点,对该井的井身结构、井眼轨道和完井方式等进行了优化设计;同时,优选了提速钻具,优化了上、下分支的钻具组合,使该井水平段的平均钻速比同样长度水平段的邻井有明显提高。该井的顺利施工,解决了
3、大庆深层气钻井技术单一的问题,为更高效开发深层气井探索了新方式。关键词:火山岩储层;深层气井;双分支井;优化设计;大庆油田中图分类号:TE243 文献标识码:BDrillingandcompletionpracticeonthefirstdeepdualbranchhorizontalgaswellinDaqingOilfieldPANRongshan,ZHANGKai,LIJifeng,BAIQiuyueResearchInstituteofOilProductionEngineerin
4、g,DaqingOilfieldCompany,ChinaCitation:PANRongshan,ZHANGKai,LIJifeng,BAIQiuyue.DrillingandcompletionpracticeonthefirstdeepdualbranchhorizontalgaswellinDaqingOilfield[J].OilDrilling&ProductionTechnology,2016,38(1):1-4.Abstract:TheChangdedeepgasfieldofDa
5、qingOilfieldisvolcanicreservoir,mostofwhicharetightvolcanicrocksandsandyconglomerates.Soithaspoordrillabilityandposesgreatdifficultyfordrilling.Inordertomaximizethereservoircontactareaandtheirproducingdegree,adualbranchhorizontalwell,Fangshen6-shuang
6、ping1well,wasdrilledparticularlyinthisgasfield.Thehorizontalsectionlengthofthisdualbranchholeisover1300m,andthesidetrackingandhorizontaldrillingareofgreatdifficulty.Thedesignofwellboreconfiguration,wellboretrajectoryandcompletionmethodswasoptimizedwi
7、threferencetothedataofoffsetwellsandincombinationofformationfeatures.Meanwhile,thespeeding-updrillingtoolswereusedandthebottomholeassemblyforupperandlowerbrancheswasoptimized,sotheaveragedrillingrateofhorizontalsectionofthiswellwasincreasedremarkably
8、comparedwithanoffsetwellofsamelengthhorizontalsection.ThesuccessfuldrillingofthiswellhassolvedtheproblemofsingledrillingtechnologyfordeepgaspoolsinDaqingOilfieldandprovidesanewmethodfordevelopingdeepgaswellsefficiently.Keywords:volcanicreservoir;deep