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1、第37卷第3期石油鉆采工藝Vol.37No.32015年5月OILDRILLING&PRODUCTIONTECHNOLOGYMay2015文章編號:1000–7393(2015)03–0118–04doi:10.13639/j.odpt.2015.03.027篩管液壓丟手裝置的研制與應(yīng)用孫文俊 侯乃賀 李富平 李建業(yè)(中國石化石油工程技術(shù)研究院德州大陸架石油工程技術(shù)有限公司,山東德州 253005)引用格式:孫文俊,侯乃賀,李富平,等.篩管液壓丟手裝置的研制與應(yīng)用[J].石油鉆采工藝,2015,3
2、7(3):118-121.摘要:長北氣田采用雙分支水平井技術(shù)配合裸眼完井進(jìn)行天然氣開發(fā),為預(yù)防鉆遇泥巖層和煤層坍塌的問題,在水平裸眼段內(nèi)下入預(yù)鉆孔篩管以支撐井壁。由于井眼環(huán)境復(fù)雜,長北氣田的水平井作業(yè)存在著長篩管下入困難、短篩管重量輕不易順利丟手、常規(guī)丟手工具遇阻時(shí)無法旋轉(zhuǎn)解阻、常規(guī)球座施工后需另外下鉆鉆除等技術(shù)難題。研制了篩管液壓丟手裝置,該裝置具備旋轉(zhuǎn)功能,允許篩管串在下入過程中采取旋轉(zhuǎn)的方式通過阻點(diǎn);具有兩種丟手方式,既可通過液壓方式丟手,也可通過機(jī)械方式丟手;設(shè)計(jì)了可提出式球座機(jī)構(gòu),在施工
3、后可隨著送入工具整體提出,無需下鉆鉆除。該篩管液壓丟手裝置通過了一系列地面性能實(shí)驗(yàn),并在長北氣田CB23-2井和CB23-3井兩口水平分支井進(jìn)行了應(yīng)用,完成了4趟篩管下入作業(yè),成功解決了現(xiàn)場難題。關(guān)鍵詞:液壓丟手;可提出式球座;裸眼完井;預(yù)鉆孔篩管;長北氣田中圖分類號:TE931 文獻(xiàn)標(biāo)識碼:BDevelopmentandapplicationofhydraulicreleasingdeviceforscreenpipeSUNWenjun,HOUNaihe,LIFuping,LIJianye(
4、ShelfoilPetroleumEquipment&ServicesCo.Ltd.,SINOPECResearchInstituteofPetroleumEngineering,Dezhou253005,China)Abstract:NaturalgasinChangbeiGasfieldisdevelopedusingdualbranchhorizontalwellsincooperationwithopenholecompletion.Inordertopreventwellborecoll
5、apsewhendrillingmudstonelayerandcoalbed,thepre-boredscreenpipeisruntothehorizontalopenholesectiontosupportthewellboresidewall.Duetocomplexityofwellboreconditions,anumberoftechnicaldifficultieshavebeenmetinhorizontalwelloperationsinChangbeiGasfieldsuch
6、asdifficultiesinrunninglongscreenpipe,thatshortscreenpipeistoolighttoeffectsmoothrelease,thatconventionalreleasetoolscannotbefreedbyrotationattighthole,andthattheconventionalballseatneedstobedrilledoutbytrippinginseparately,etc.Ahydraulicreleasingdevi
7、ceforscreenpipehasbeendeveloped,whichhasrotationfunction,allowingthescreenpipetopassthetightholebyrotatingwhenitisrun.Therearetworeleasemethods:hydraulicreleasingandmechanicalrelease.Thedesignedretrievableballseatmechanismcanbeliftedoutasawholewiththe
8、runningtoolafterthejobisfinishedanddoesnotneedtobedrilledout.ThishydraulicreleasingdeviceforscreenpipehaspassedaseriesofsurfaceperformanceexperimentsandutilizedintwohorizontalbranchwellsCB23-2andCB23-3inChangbeiGasfield;fourrunsofscreenpipewer