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X(,637001)(),,,,,PVT,;;;TE245,,4500m7000m,,:(1),;(2);PVT,,,PVT,19691982,RaymodKellerHHMarshallDW,[13]19701992,HolmesArnoldkabir[46],McMordieHoberockEkwere[7,8];6080,HillerSinha[9,10],,,,,11.11.1.1,:(1),;(2);(3);1.1.2,,,,,:202Vol.20No.219985JournalofSouthwestPetroleumInstituteMay1998X19971201,,1963,,QmCpmdTddZ-2RdiUd(Td-Ta)=0QmCpmdTadz+2RdiUd(Td-Ta)-dQfadZ=0Qm:,Kg/s;Cpm:,KJ/(Kg);Td:,;Ta:,;Rdi:,cm;Ud:,KJ/(hm2);dQfadZ:,KJ/(hm);1.1.3,()(),,:dQfhdZ=mCpmdThdtm:,Kg;dQfhdZ:,KJ/(hm);Th:,1.2,m=m(P,T),1.3,,,:A=A(P,T)A:,1.4PVTPVT,,,,,,,PVTPV=ZnRTn:;R:;Z:,PVT2,,,6372.6m6372.6m,1.88g/(cm)3,4h4.8MPa1.96g/(cm)36375.6m,2.12g/(cm)31,81/2+61/415+514+5+51/41,,1g/cm3mPasPal/s/m1.881.962.125029250.0235424.826372.6m,,752:,,,,121.88g/(cm)32.13,6372.6m,4.8MPa,,122.33MPa,,,,(115.63)113.35MPa,118.15MPa,4.18MPa,31.88g/(cm)3(48h)2.2,357:,,,1.88g/(cm)3,048h,112.57MPa113.43MPa;024h,113.43MPa113.23MPa41.88g/(cm)32.3,,468,2.12g/(cm)30h48h,2.76MPa2.8MPa85199851.96g/(cm)3(48h)61.96g/(cm)372.12g/(cm)3(48h)2.4,8,2.12g/(cm)3,1.0m/s,,0h48h,3.87MPa3.91MPa2.5,,,82.12g/(cm)3:,,PVT,(357),,,:(1),,,118.15MPa,115.63,1.88g/(cm)3,,(3),,;(2),1.96g/(cm)3,,4h,,10h,9h,,,,,,,,;952:(3)78,6375.6m,2.12g/(cm)3,,24h,,,,,,3(1);(2);(3)(),,,,,;(4),,,,(),(5),,,,,,;1RaymodLR.TemperatureDistributioninaCirculatingDrillingFluid.JofPet.Tech,1969,21:3333412KellerHH,CouchEJ&BerryPM.TemperatureDistributioninCirculatingMudColumns.SPEJ,1973.2:23303DavidWMarshall,RamonGBentsen.AComperModeltoDeterminetheTemperatureDistributioninaWellbore.JofCanadianPetTech,1982.12:63754CharlesSHolmes,SamuelCSwift.CalculationofCirculatingMudTemperatures.JofPet.Tech,1970.6:6706745ArnoldFC.TemperatureVariationinaCirculatingWellboreFluid.JofEnergyResourcesTech,1990.6(112):79836KabirCS,KoubaGE.DeterminingFluidTemperatureinDrilling,Workover,andWellControlOperations.SPE245817HoberockLL,ThomasDC&NickensHV.HeresHowCompressibilityandTemperatureAffectBottom-HoleMudPressure.OGJ,1982.3:1591648RolandRSorelle,RicardoAJardiolin.MathematicalFieldModelPredictsDownholeDensityChangesinStaticDrillingFluid.SPE111189HillerKH.RheologocalMeasurementsonClaySuspensionsandDrillingFluidsatHighTemperaturesandhighPressures.JPT,1963.7:77978910SinhaBK.ANewTechniquetoDeterminetheEquivalentViscosityofDrillingFluidsUnderHighTemperaturesandHighPressures.SPEJ,1970.3:334011PolitteMD.InvertOilMudRheologyasaFunctionofTemperatureandPressure.SPE/IADC1345812HouwenOH.RheologyofOil-BaseMuds.SPE1541613AldermanNJ.High-Temperature,High-PressureRheologyofWater-basedMuds.SPE18035()(55)4.MSPC.,1984,6(5)5..,1987,10(2)6..,1988,16(1)7.OSAM2K.,1989,17(1)8VanOortE,et,al.ManipulationofcoupledosmoticflowsforStabiLizativrofshalesexposedtowater-baseddrillingfluids.SPE304999GMBoletal.BoreholeStabilityinShales.SPEDrillingandCompletion,June199410DingRuietal.Soluble-silicatemudadditivesinhibitunstableclays.OGJ,Apr1996()061998structuralcharacteristicsofShaihanSag,structuraldevelopmentandpetroleumgeologicalcharacteristicsoftheSagarediscussed,andtheaccumulationofoil/gasandtherelationbetweenfaultandoil/gasaredescried.Itispointedoutthatfrictionheatduetofaultingactivityandvolcaniceruptionalongthefaultymakethegeothermalgradientriseinthearea,whichisfavorablefororganicmattertotransformintohydrocarbon.Keywords:Tectonictransport;Remotesensing;HydrocarbonpotentialLowPressureUnder2balanceddrillingAnewApproachinExploringDrilling,JSWPI,1998,20(2):3946LuoPingya(CentreforWellCompletionTechnique,SWPI,Sichuan,637001),MengYingfengAccordingtotheanalysisofpetroleumeconomyandsupplydemandrelationshipintheworld,theconclusionisgainedthattheupstreamoftheindustryshouldplaceconsiderableattentiononresource,productivity,efficiencyandsuccessiverateofexploringwells.Baseduponthetechnologicalareastobeconcerned,thegeologicalcharacteristic,reservoircharacteristicandeconomictechnologicalcharacteristicareanalysedinthepaper,anditispointedoutthatlowpressureunder-balanceddrillingtechnologymustbeutilisedinordertocompletethetasks.Inaddition,thepresentsituationofdevelopmentandexistingproblemsinlowpressureunder-balanceddrillingtechnologyinabroadarementioned,andthekeypointanddirectionofdevelopmentinlowpressureunder-balanceddrillingtechnologyinchinaareintroducedcombiningwithsomeseven-yearresearchachievementmadebySouthwestPetroleumInstitute.Keywords:Explorationdrilling;Lowpressuredrilling;UnderbalanceddrillingStudyonTechniqueofEnhancingCementingQualityandPreventingCasingCorrosiveinChangqingOilField,JSWPI,1998,20(2):4752GuoXiaoyang(Dept.ofScientificResearch,SWPI,Sichuan,637001),ZhangYunlong,YongYuanguangThemainlydifficultproblemofproductioninadequatereturntopofslurryandpoorbondingcementingholereactionarediscussedinthepaper;theeffectivefactorsofcementingquality-poorslurryproperty,lostcirculation,poordisplacementinlongbarehole,ando8il-gas-watermigrationintheprocessesofslurrysettingareanalyzed;thetechnicalcountermeasureofenhancingcementingqualityandpreventingcasingcorrosivearepresented.Theprevioustroublesaresolvedsatisfactorilyandmarkedeconomicbenefitabstainedbyusingthesetechniquesinlowtemperature,weakandoil-gas