氣井井下氣液分離回注技術研究.pdf

1、中國石油大學（華東）博士學位論文氣井井下氣液分離回注技術研究姓名：付靜申請學位級別：博士專業(yè)：油氣田開發(fā)工程指導教師：李兆敏20090401StudyontheTechnologyofDownholeGaswaterSeparationandReinjectionSystemFuJing(DevelopmentEngineeringofOil&GasField)DirectedbyProfLiZhao—rainAbstractThisp

2、aperpresentsapplicationofdownholegas—waterseparationtechnologycallbeoutputofwaterdirectlyintothesamewellwaterrechargeingaswellproductionInthispaperputforwardtheuseofspiralhydroeycloneforundergroundgasandwaterseparationby

3、thefirsttimeOriginaldesignofasetofspiralhydrocycloneusedtoinjectwaterandgasseparationprocesswiththewellwatersystemlayerTheresultshowsthat：Firstofall，thepaperbringforwardthatusingspiralcycloneseparatorfordownholegaswaters

4、eparationisreasonablecombinationofconventionalgaswellprocessesThepapermakethepitchofspiralseparatorthenumberofspiral，弱well簽liquidflowandgasflow翹thebasicstructureparametersimpactingtheperformanceandefficiencyofseparationi

5、nthefirsttimeSecond，theformulaofdropletcoalescenceisderivedbygasliquidseparationofflowfieldfromtheactualflowfieldAtthesametirne，thepaperattempttoputforwardthediagnosisofeffusionofnaturalgaswellsandthepreparationofthewell

6、borefluidpredictionsoftwareCombinationofundergroundconditionsattheactualsituationitdeterminesthepitchofspiralseparatorandthenumberofspiralunderdifferentaccelerationofdiameterofparticleandfoundsthetheoreticalbasisofspiral

7、separatorThird，thepaperanalyzestheReynoldsStressModel(RSM)asthemostsuitablemodelforthenumericalsimulationofturbulenceFor11modelsparameters，respectively，itusesFLUENTsoftwaretosimulatethesinglephaseofgasflowfieldandgas—liq

8、uidoftwophaseflowfield，anddetailedstudytherelationship：thechangesofstructuralparametersofspiralseparatorandtheturbulentgasflowsaswellastheimpactofseparationefficiencyfactorsResultsareobtainedthatthepitchthenumberofspiral

9、hasrelationship、Ⅳimseparatorpressuredrop，cross—sectionpressuredrop，velocity’sdistributionandseparationefficiencyAspressuredropistheimportantparameterofhydrocycloneenergyconsumption，SOthestructuralparametersandthethepress