连续油管喷砂射孔套管分段压裂新技术的现场应用

:(863)(:2006AA06A106):,1965,;:(610051)6:13981927666Email:[e-mail]钱斌朱炬辉李建忠李国庆向兰英.连续油管喷砂射孔套管分段压裂新技术的现场应用.天然气工业,2011,31(5):6769.随着我国逐步对致密气藏页岩气藏等非常规油气藏实施勘探开发,压裂增产技术也逐步呈现大规模多段分段压裂的趋势连续油管带封隔器套管分级压裂技术是目前国外较新研发的一种既能实现大规模改造,又能达到分层压裂精细压裂的一种新型分级压裂技术这一技术通过连续油管结合带封隔器的喷射工具,利用封隔器的多次上提下放坐封解封达到不限次数多级压裂的目的;通过连续油管喷砂射孔套管进行主压裂,可实现较大规模改造;通过连续油管的精确定位,可对储层纵向上的多个薄互层进行灵活分层,进而达到精细压裂的目的为此,详细阐述了连续油管带封隔器环空分级压裂的工艺技术特点以及这一技术在国内四川盆地HC井区首次现场应用情况,并对HCA井施工过程进行了计算和分析事实证明,连续油管带封隔器环空分级压裂作业周期短分层灵活精细封隔可靠且施工后井筒清洁,可直接多层测试投产的新型压裂技术为我国致密气藏页岩气藏的多级分段改造提供了新的且行之有效的解决手段多级压裂连续油管喷砂射孔封隔器套管分段现场应用DOI:10.3787/j.issn.10000976.2011.05.017,,[12],340,,20108,HC267,,2,,,11.1,,,[34],,,,,25mm[1],,,2139.7mm,3~3.5m3/min50MPa,,67315,[56]1.2:;,;,,,;;,,,,,1.3(),()()/()()(1);(2)122.1HCA,2515.00m,22225.90m,32MPa,67,1925m,50,,,[7]12.2:44.5mm:44.5mm139.7mm2.344.5mm++++++++2.4100,120kg/m3;3,4mm;0.48m3/min2.53.0~3.5m3/min,966m320/40118.27t,308kg/m3,580kg/m32.61)31,,71HCA/m/m/m2197.7~2204.02200.96.37.5%~7.9%43%~52%2213.6~2222.92222.09.35.3%~7.0%40%~60%2343.1~2345.92346.52.86.0%~7.2%37%~75%2376.3~2380.12380.63.85.1%~7.8%30%~65%2388.4~2391.92392.03.57.4%29%~64%2404.4~2407.82407.53.413.0%29%~41%2428.3~2437.52434.29.28.9%~13.1%66%~82%68201153HCA1,2)75min,55min,3),4)11,2~727,5),,,CT2.71)130min2~7,50%,2)2~7,,,15min,24.4min,(4)42~72.82010914,10mm,5.4MPa,,,3~4m,894.0m3,1011.49m34.7104m3/d31)HCA;;2),,,3),,HCA2.8m4),,,[1],,,.[J].,2008,28(8):6163.[2],,,.[J].,2008,28(8):5557.[3]MANRIQUEJF,POEBD.Comprehensiveperformancedesigncriteriaforhydraulicfracturing[J].SchlumbergerTexas,2005,57(3):14.[4].[M].:,2007.[5]HALDARSURAJIT,ALJANDALAHMEDA,ALDRIWEESHSAADM,etal.EvaluationofrotaryjettingtoolapplicationformatrixacidstimulationofcarbonatereservoirinSouthernAreaFieldofSaudiArabia[C]paper12023MSpresentedattheInternationalPetroleumTechnologyConference,35December2008,KualaLumpur,Malaysia.IPTC,2008.[6],,,.[J].,2010,30(1):6567.[7],.[J].,2010,30(10):2225.(20110322)69315NaturalGasIndustry,Vol.31,Issue5,2011DOI:10.3787/j.issn.10000976.2011.05.016JinXiuju,engineer,bornin1978,ismainlyengagedinwelltestinganalysis.Add:No.109,ZhongyuanRd.,Puyang,Henan457001,P.R.ChinaTel:[phone]Email:[e-mail]asiveJetMultiStageFracturingwithcoiledtubingannularfracBHAQianBin,ZhuJuhui,LiJianzhong,LiGuoqing,XiangLanying(DownholeDrillingCompany,ChuanqingDrillingEngineeringCo.,Ltd.,CNPC,Chengdu,Sichuan610051,China)NATUR.GASIND.VOLUME31,ISSUE5,pp.6769,5/25/2011.(ISSN10000976;InChinese)Abstract:Withthefurtherdevelopmentofunconventionalgasreservoirssuchastightgasandshalegas,stimulationfracturingtreatmentshowsadevelopingtrendoflargescaleandmultistagefracturing.CoiledTubingAnnularFracBHAwithexternalpackerisanewmultistagefracturingtechnologythatcanrealizethelargescalereformationaswellasthezonalfracturingandfinefracturing.Thiscompletionmethodutilizesacoiledtubingdeployedbottomholeassembly(BHA)thatincludesabrasivejetperforatingnozzlesandamethodofisolatingalldownholefracturetreatments,thus,multistagefracturingcanbeachievedbysettingandunsettingofthepacker.Furthermore,throughmainfracturingworkbyuseofcoiledtubingabrasiveperforatingandcasing,thelargescalereformationcanbeachieved.Finally,throughtheexactpositioningofcoiledtubing,multipleoverlyingthininterlayerscanbeeasilydelaminated,whichleadstothefinefracturing.Therefore,thetechnicalcharacteristicsofcoiledtubingannularfracBHAareillustratedindetail.Moreover,theapplicationofthistechniqueintheHCwellblockoftheSichuanBasinisalsoillustratedandanalyzed.Theapplicationshowsthatthisnewmultistagefracturingwillresultinashortworkingcycle,flexibledelamination,reliableisolation,andcleanwellboreafterconstruction,andevenleadtoadirectmultilayertestproduction.ThisprovidesanewandfeasiblesolutiontothemultistagefracturingtreatmentfortightgasandshalegasreservoirsinChina.Keywords:multistagefracturing,coiledtubing,abrasiveperforating,packer,casingsegment,fieldapplicationDOI:10.3787/j.issn.10000976.2011.05.017QianBin,seniorengineer,bornin1965,ismainlyengagedinreservoirfracturingstimulationtechnology.Add:No.6,Ruifengxiang,NorthSec.4,2ndCircleRd.,Chengdu,Sichuan610051,P.R.ChinaMobile:[phone]Email:[e-mail]cationofcompletionstringsinaHTHPgaswellGuoJianhua1,2,SheChaoyi1,2,TangGeng1,ChenYan1,ShiTaihe2(1.GasProductionEngineeringResearchInstitute,SouthwestOil&GasfieldCompany,PetroChina,Guanghan,Sichuan618300,China;2.SouthwestPetroleumUniversity,Chengdu,Sichuan610500,China)NATUR.GASIND.VOLUME31,ISSUE5,pp.7072,5/25/2011.(ISSN10000976;InChinese)Abstract:Inrecentyears,withtherapiddevelopmentofgasexplorationanddevelopment,moreandmoreparticularwellshavebeenencountered,suchasgaswellswithhightemperatureandhighpressure,deeporultradeepwells,andwellswithcorrosivemedia,sotheoptimaldesignandoperationofcompletionstringsarebecomingmoreandmoredifficult,thusthesafetyandenvironmentalprotectionaregettingmoreandmorechallenging.Alargepercentageoftheproductionwellshaveabnormallyhighcasingpressurecausedbykindsoffactors,posingthreattosafeproduction.Basedonthe