蘇里格氣田氣井井筒水合物形成機理及預測研究.pdf

1、西安石油大學碩士學位論文蘇里格氣田氣井井筒水合物形成機理及預測研究姓名：蓋姍姍申請學位級別：碩士專業(yè)：油氣井工程指導教師：李天太20080520英文摘要Subject：StudyontheFormationMechanismandForecastofGashydrateinGaswellboreholeintheSuligeGasFieldSpeciality：PetroleumandNaturalGasEngineeringName：

2、Gaishanshan(signatuInstructor：LiTiantai(signatureABSTRACTTheharshenvironmentandsignificantalternationoftemperaturemakegashydratecreateeasilvinthegaswellboreholeItcausesboreholepluggingandaffectsthenormalgaswellproduction

3、Therefore，itisimportanttoforecastthecreatingplaceofgashydrateinboreholeandpreventthegashydratefromcreating，whichhastheremarkablesignificanceonraisingdevelopmentbenefitofgasreservoirFirstofall。basedonthetheoryofmass，momen

4、tum，energyconservationandthetheoryofthrottleinwellbore，theprofileoftheflowpressureandtemperatureinwellborearedescribedinthispaperNodalanalysisisappliedtocalculatethedistributionofpressureandtemperatureinthewellboreSecond

5、ly，onthebasisofresearchingthedomesticandintemationalforecastingmodelsofgashydrate，theforecastingmodelsofgashydrateareoptimized，whichcanbeappliedtotheSu14wellblockThetwomodelsarethenmuralgashvdrateP—Tgraphicregressionmode

6、landtheimprovedstatistic—thermodynamicmodel，bymeansofwhichthesoftwareisdevelopedFinally，thecreatingtemperatureofgashydrateofsixtypicalgaswellsinSu14wellblockarecalculmedandanalyzedbythesoftwareTheresultsshowthatintheSu14

7、wellblock，ifthechockarenotinstalledingaswells，thescopeofgaShydrateformationisprobablywithin300metersfromthewellheadHowever，ifthechockareinstalledingaswells，itcansignificantlyreducethewellheadpressureandtheformattingtempe