Models of liquid unloading in gas wells.pdf

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1、万方数据分类号CategoryNo．!星三§三：三密级SecurityLevelfJIIIIIIIIIIIIIIIIIIjY3427218题目TITLE学号StudentNo．141010623Xi’anShiyouUniversity全日制学术型FULL．TIMESTUDY硕士学位论文POSTGRADUATETHESIS作者姓名AUTHOR’SNAME导师姓名、职称SUPERVISOR’SNAME．TITLE学科(专业)名称MAJOR提交论文日期DATEModelsofliquidunloadingingaswellsDIAKHA

2、TEASTOUGAWANEProf．NINGSHENGZHANGoil—gaswellengineering2018June03万方数据DECLARATIONIDIAKHATEASTOUGAⅥ硝NEdeclarethatthisworksubmittedforassessmentismyownandisexpressedinmyownwords．Anyusesmadewithinitoftheworksofotherauthorsinanyform(e．g．ideas，equations，figures，text，tables，pr

3、ograms)areproperlyacknowledgedatthepointoftheiruse．Alistofthereferencesemployedisincluded．IncaseofanyinaccuraciesfoundinthisthesisIcarryallliabilitiesAuthorSignatur黧——Date：血f星：≤．．，DISSERTATIONLICENSEINSTRUCTIoNSIamfullyawareoftheprovisionsrelatingtotheretentionanduseof

4、dissertationsatXi’anShiyouUniversity,namely：thethesisworkdoneduringmystudiesbelongstotheintellectualpropertyunitofXi’anShiyouUniversity．IagreethattheLibraryandmymajordepartmentshallmakeitfreelyavailableforresearchpurposesandacademicachievement．Permissiontocopythisthesi

5、sforscholarlypurposesmaybegrantedbyXi’allShiyouUniversity．AuthorSignature：么媪．坠Date：20[堡=e：丑SupervisorSignature饷呼眦：上赳。Ⅲ8¨¨U●_I㈣2㈣7Ⅲ2m4⋯3眦Y万方数据一．塑!!坠里一Subject：ModelsofliquidunloadingingaswellsSpecialty：OilandgaswellengineeringName：ASTOUGAWANEDIAKHATE(signaInstructor：NING

6、SHENGZHANG(signatureABSTRACTGasDroduced矗omreseⅣoirwell，inmanycases，haveliquidphasematerialwithit,the1)resenceofwhichCanaccumulateinthewellboreovertimewhentransportingenergy1slowenou出inthelow—pressurereservoir．Theliquidsaccumulatedinthewellborewlllcauseadditionalhydrost

7、aticpressureOilreservoir，whichresultsincontinuedreductionofavailabletransportationenergyandaffectingtheproductioncapacity．Insomecases，iteVencausesgaswellstodie．Thus，ifwewanttouNoadtheliquidcolumn，wehavetousetheprocessofgasDroductionbywaterdrainage．However，beforetheoper

8、ation，wemustdecidewhichgaswellswillbe10adedby1iquid．Then，thereisacriterionforpredictingliquidloadingandchoosingwells，