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1、分类号学号CategoryNo.TE355.3StudentNo.141010623密级SecurityLevel全日制学术型FULL-TIMESTUDY硕士学位论文POSTGRADUATETHESIS题目ModelsofliquidunloadingingasTITLEwells作者姓名DIAKHATEASTOUGAWANEAUTHOR’SNAME导师姓名、职称Prof.NINGSHENGZHANGSUPERVISOR’SNAME,TITLE学科(专业)名称oil-gaswellengineeringMAJO
2、R提交论文日期2018June03DATEDECLARATIONIDIAKHATEASTOUGAWANEdeclarethatthisworksubmittedforassessmentismyownandisexpressedinmyownwords.Anyusesmadewithinitoftheworksofotherauthorsinanyform(e.g.ideas,equations,figures,text,tables,programs)areproperlyacknowledgedatthep
3、ointoftheiruse.Alistofthereferencesemployedisincluded.IncaseofanyinaccuraciesfoundinthisthesisIcarryallliabilities.AuthorSignature:____________Date:____________DISSERTATIONLICENSEINSTRUCTIONSIamfullyawareoftheprovisionsrelatingtotheretentionanduseofdissertat
4、ionsatXi’anShiyouUniversity,namely:thethesisworkdoneduringmystudiesbelongstotheintellectualpropertyunitofXi’anShiyouUniversity.IagreethattheLibraryandmymajordepartmentshallmakeitfreelyavailableforresearchpurposesandacademicachievement.Permissiontocopythisthe
5、sisforscholarlypurposesmaybegrantedbyXi’anShiyouUniversity.AuthorSignature:____________Date:____________SupervisorSignature:__________Date:___________IABSTRACTSubject：ModelsofliquidunloadingingaswellsSpecialty：OilandgaswellengineeringName：ASTOUGAWANEDIAKHATE
6、(signature)_____________Instructor：NINGSHENGZHANG(signature)_____________ABSTRACTGasproducedfromreservoirwell,inmanycases,haveliquidphasematerialwithit,thepresenceofwhichcanaccumulateinthewellboreovertimewhentransportingenergyislowenoughinthelow-pressurerese
7、rvoir.Theliquidsaccumulatedinthewellborewillcauseadditionalhydrostaticpressureonreservoir,whichresultsincontinuedreductionofavailabletransportationenergyandaffectingtheproductioncapacity.Insomecases,itevencausesgaswellstodie.Thus,ifwewanttounloadtheliquidcol
8、umn,wehavetousetheprocessofgasproductionbywaterdrainage.However,beforetheoperation,wemustdecidewhichgaswellswillbeloadedbyliquid.Then,thereisacriterionforpredictingliquidloadingandchoosingwells,
