矿渣MTC胶结物抗腐蚀性能研究Ξ

:1000-2634(2000)02-0054-03MTCX1,1,1(1.,637001):MTC,MTCMTC,MTC,NaClNa2CO3Na2SO4MgSO4,;,:;;MTC;:TE357.1+2:A,MTC[2,4]MTC,MTC1MTC,,MTC111Ca(OH)2,112,,Na2SO4MgSO4CaSO4(SO42-)[6]:4CaOAI2O319H2O+3(CaSO42H2O)+7H2Ov33CaOAI2O33CaSO431H2O+Ca(OH)21.5,,Ca(OH)2,,113MgSO4MgCI2Ca(OH)2[3]:MgSO4+Ca(OH)2+2H2OvCaSO42H2O+Mg(OH)2MgCl2+Ca(OH)2vCaC12+Mg(OH)2Mg(OH)2;CaC12;114CO2CO2,Ca(OH)2[6]:CaCO3+CO2+H2O[Ca(HCO3)2Ca(OH)2,222Vol.22No.220005JournalofSouthwestPetroleumInstituteMay2000X:19990921:(1971),(),,,CaC12Ca(HCO3)2Ca(HS)2,;,,pH,OH-,,,,,,13037d/MPa/m2/MPa/m2/MPa/m2/MPa/m216.10.001916.80.002117.70.002318.10.0027NaCl16.00.001715.50.001715.10.002215.10.0025Na2CO316.20.001915.70.001715.40.002115.70.0031NaHCO316.90.001314.70.007913.10.01027.10.1386Na2SO416.00.001715.40.001715.20.001915.20.0023MgSO415.80.001615.10.002115.10.002615.00.0032HCl16.40.001213.70.010112.10.07576.30.273116.70.001115,70.002215.50.002815.50.00322()3037d/MPa/m2/MPa/m2/MPa/m2/MPa/m25%16.00.0008715.70.004114.60.00938.10.021210%17.20.0007116.00.001615.30.001715.00.002315%17.50.0007216.90.001216.60.001316.60.002120%18.00.0006717.00.000716.70.0001016.50.00193/%SiO2AI2O3Fe2O3CaOMgO20.024.04.07.02.05.062671.04.531.2439.67.84.16.660.283.8330.5945.31.9412.792MTC,9071HCl2%(20000ppm),NaCl20%(200000ppm),10%(100000ppm)NaClNa2CO3Na2SO4MgSO425%751NaClNa2CO3Na2SO4MgSO4552:MTCNaHCO3HClab1(a)(b)(2000),Ca(OH)2,3,[1]Ca(OH)2[3],Ca(OH)2[3]Ca(OH)2,3,,,,2907,NaHCO375,:(1)1,,,,(2)(3),,4411MTCNaClNa2CO3Na2SO4MgSO4412NaClNa2CO3Na2SO4MgSO4NaHCO3,MTC413NaHCO3,MTC10%15%():[1].[J].,1997,(10):1114[2],.[J].,1998,(3):5558[3]LeeFM.()[M]..,1989[4],.[J].,1998,(2):6365[5],.[J].,1995,(1):6768[6].()[M].,1961()652000methodwasemployedtosolvethismodelandthesimulationre2sultswerecomparedtothatof1Dmodel.Itshowsthat,theleakoffratecalculatedattheconsiderationofthatfracturingflu2idleakoffflowsinthedirectionthatperpendiculartothefrac2turefaceissmallerthanthatof2Dflow,andtheirdifferenceincreaseswithformationpermeability.The2Dmodelismorereasonable.Becausethenon-Newtonianbehavioroffracturingfluidandthe2Dflowwereaccounted,thismodelismoreappli2cableanditssimulationresultsareclosertofield.Itcanreducethefracturingoperationventureandincreasethereliabilityoffracturingdesign.KeyWords:filtrateloss,fracturingfluid,2Dmodel,nu2mericalsimulationFINITEELEMENTMODELSCREATEDANDMESHEDINPERFORATEDCOMPLETIONLIANZhanghua(SouthwestPetroleumInst),MENGYingfeng,TONGMinJOURNALOFSOUTHWESTPETROLEUMINSTITUTE,VOL.22,NO.2,46-49,2000(ISSN1000-2634,INCHINESE)Thebasicmethodsof2D,3Dfinite-elementthermalmodelscreatedandmeshedhavebeenintroducedinthepaper.Simulatingfluid-flowfieldwiththermalfield,thematerialsofwellholeandperforatedtunnelaresimulatedbythesamecon2ductivitymaterial,thethermalconductivityisinfinitelygreatwithrespecttotheconductivityofformation,itcansimulatethefluid-flowfieldofthewholeperforatedcompletion.The2Dand3Dmodelscanbeusedtostudythevelocityintheper2foratedtunnel,thefluid-flowvelocityofoutboundaryofcrushedzone,fluid-flowpressurefield,theflowrateofwholesizewellandtheproductionrate,withorwithoutdrillingdam2ageandcrushedzone.AgeneralprogramofthemeshedmodelshasbeenwrittenwithAPDLcomputerlanguage.itprovidespracticalFEMmeshedmodelsfortheoptimaldesignandpro2ductionratepredictionofperforatedcompletion,andalsopro2videsabriefmethodfortheresearcharea.KeyWords:perforatedcompletion,finiteelementmethod,models,meshedAPPLICATIONOFTHECEMENTINGQUALITYE2VALUATIONBYUSEOFTHEMULTIPLECOMPREHENOSIVEJUDGEMENTMETHODLIHongqian(ShengliPetroleumAdministrativeBureau),LIJianguo,HEYurong,etalJOURNALOFSOUTH2WESTPETROLEUMINSTITUTE,VOL.22,NO.2,50-53,2000(ISSN1000-2634,INCHINESE)Thecementingperfectionrateisanimportantmeasure2menttoevaluatethecementingquality.Manyfactorsaffectce2mentingperfectionrate,mainlyincludingthreegroups:wellfigure,mudpropertyandcementingoperationparameters.weusesoneofthefuzzymethods-themultiplecomprehensivejudgementtoevaluatethefactors.Finally,thefactorwhichplayadecisiveroleispresented,itprovidesatheoreticalsupportforcementingoperationandhowtoadjustandcontrolthedrillingaswellashowtodeterminecementingparameters.KeyWords:cementingquality,fuzzymathematics,com2prehensiveevaluationSTUDYONANTI-EROSIONCAPABILITYOFBLASTFURNACESLAGUSEDINMUDCHANGINGTOCEMENTTECHNOLOGYGEHongjiang(SouthwestPetroleumInst),LIUChongjian,XIEYingquanJOURNALOFSOUTHWESTPETROLEUMINSTITUTE,VOL.22,NO.2,54-56,2000(ISSN1000-2634,INCHINESE)Withthedevelopmentofmudchangingtocement(MTC)technology,moreattentionisgiventoerosionofMTCslagblock.Inthispaper,severalprobablyerosionsituationandmechanismofslagblockarediscussed.Laboratorytestingre2sultshaveshowedthattheslagblockcanresisterosionfromNa2ClNa2CO3Na2SO4andMgSO4,butitismorelikelycorrodedinacidmediumsuchasNaHCO3solution.Manyexperimentsaredoneinordertoimprovetheresistingaciderosioncapabilityofslagblock.Aneffectivewayhasbeenfoundthattheresistanterosioncapabilityinacidcanbegreatlyenhancedbyaddingla2tex(10-15percentofvolumeofmud)toslagslurry.KeyWords:cement,erosionresistance,MTC,laboratorytestingSTUDYONCHEMICALEQUILIBRIUMINSANDSTOONEMATRIXACI