煤层气水平井开发技术现状及发展趋势

©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(,257061):,,,,,,:StatusofCoalbedMethaneHorizontalWellTechnologyandTrendofDevelopmentZhangWeidong,WeiWei(CollegeofPetroleumEngineering,ChinaUniversityofPetroleum,Shandong257061)Abstract:Coalbedmethane(CBM)isakindofunconventionalnaturalgasresources.TraditionalwayforCBMdevelopmentissurface(verticalwells)drainagebuck,butthismethodmaycauselowproductionofsinglewellandtheeconomicreturnrelativelypoor.Atpresent,oneofthecountermeasurestostimulateCBMproductionishorizontalwelltechnology.CBMhorizontalwelltechnologyisahighyieldtechnologywithlowcost,whichhasbeenincreasinglyusedinCBMdevelopment.ThispapermainlypresentsthecurrentstatusanddevelopmenttrendoftheMulti2lateralhorizontalwelltechnology.ThroughtheintroductiontoCBMhorizontalwelltechnologyathomeandabroad,aconclusioncanbeconductedthatCBMhorizontalwelltechnologyisanimportanttechnologysuitabletobeappliedinChinasCBMdevelopmentwhenitisusedonthebasisoffullyunderstandingofthegeologicalcharacteristicsofcoalreservoirs.Keywords:CBM;horizontalwell;statusofthetechnology;developmenttrend,,,,,,,,1968,1990(),,,54Vol15No14200811CHINACOALBEDMETHANENov12008©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(),1111,,,,,,,,1,1,1500m,814,200800m4,312104m,418km2(16),,,,,1976,20,,,,19980156108m3,20061100,18108m3,,(1)112,20041128DNP02,8000m,1,3000m3DNP02,,,3#15#4,,,,PZP03-1H2006101820061110,23,,28,5558m,5183m,5011m,96168%,0155km2PZP03-1H,:(2)2,,,024©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(3)3:(RMRS)RMRSMWD,:++++MWD++MWD;PDC,LWD:,,,;140150,/,,68m,5070m/h,23,,,;;,();,100m,10179/30m7121/30m;5395m,65170m,,(4)4:,,,,,,,,900L/min,30m3/min,119211MPa,(),75210GAPI,80100m,1075GAPI,100m,,,274279m,124©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.[1],,.[J].,2005,33(6):10-11.[2],,,.[J].,2004,27(2):4-6.[3],.[J].,2006,06:24-30.[4].[J].,2007,26(5):625-628.[5].[M].:,2007:51[6].[J].,2005,2(3):38-41(),224