高含氣欠平衡鉆井液安全分離器的優(yōu)化技術(shù)研究.pdf

1、中國石油大學(xué)（華東）碩士學(xué)位論文高含氣欠平衡鉆井液安全分離器的優(yōu)化技術(shù)研究姓名：王凱申請學(xué)位級別：碩士專業(yè)：安全技術(shù)及工程指導(dǎo)教師：賈星蘭20100301TheOptimizationResearchonHighGasUnderbalancedDrillingMudSecuritySeparatorWangKai(SafetyTechnologyandEngineering)DirectedbyProfJiaXinglanAbstrac

2、tTheproportionoflowpermeabilityoilreservoirisgraduallyincreasedwiththedevelopmentofoilexplorationtechnologywhichleadstoconstantlydevelopingoftheunderbalanceddrillingtechnologyRemovingthegasfromdrillingmudduringthemudcirc

3、ulationtothegroundisveryimportantintheunderbalanceddrillingprocessAvarietyofgaseswillbeswappedintodrillingmudforreducingthedensityofdrillingmudintheprocessofunderbalanceddrillingIfthegascannotbeeffectivelyremovedinthegro

4、unddegassing，itwillbebrightagreatsecurityrisk，andaffectedthedrillingprocessparametersandmeasurementaccuracyofthedatamadethesituationundergroundtodeterminemorecomplex；ontheotherhand，itwillaffecttheefficiencyofdrillingflui

5、dcirculationandmudpump，andleadtothewearingofpartsItmayalsocauseanexplosionormalignantpoisoningincidentsAtpresent，degassingunderbalanceddrillingmudonthegroundismainlyusinggravitytypegas—liquidseparatorathomeandabroadGravi

6、ty—typegas—liquidseparatorhassomedefects，whichhandlingofsmallamount，lowseparationefficiencyoperationcomplex，noteasytodemolitionandmaintainTherefore，usingofgasliquidcycloneseparationtechnologytoseparationofthegasfromunder

7、balanceddrillingmudisthispaper’SmaintaskThekeycomponentofharmlessproceedingistheseparationofthegasfromunderbalanceddrillingmud，andthisisalsothemaincontentsofthisarticle：optimizationofdrillingmudgas—liquidcylindricalcyclo

8、neseparatorTheflowfieldindrillingmudgasliquidcylindricalcycloneseparatorwasstudiedusingthecomputationalfluentdynamics(CFD)methodThestressdistribution，axialvelocityandtangentialvelocityweresimulated，andtheflowfieldfeature

9、ofthedrillingmudgas—liquidcylindricalcycloneseparatorwasalsoobtainedTherelationshipsbetweensomefactors，whichaffecttheseparationefficiencyofdrillingmudgasliquidcylindricalcycloneseparatorandtheseparationefficiencyofthiscy

10、cloneseparatorwereobtainedThesefactorsinclude：theentrancespeed，aspectratio，theliquidcontaininggas，importposition，drillingfluidviscosityseparatordiameterbubblediameteretc，andmadetheresultscomparedtotherealitytesttoverifyt