地层坍塌压力的测井预测研究

*PLN0133411:,1977,;:(610500):[phone]*刘之的1夏宏泉1张元泽2严仁俊2李兰熙2李香华2(1.2.).地层坍塌压力的测井预测研究.天然气工业,2004;24(1):57~59地层坍塌压力剖面的准确确定,对于井眼稳定和安全钻井至关重要文章在建立了地层坍塌压力计算模型之后,着重研究了如何从测井信息中准确提取模型中所涉及的岩石力学参数将该法应用到罗家寨构造LJ2井等多口井的测井资料精细解释处理中,计算出该井不同井深与不同层位地层坍塌压力及保持井壁稳定的泥浆密度此结果应用到实际钻井中,效果良好,且实用性强,为该地区科学钻井提供了合理的泥浆密度设计依据测井资料地层坍塌压力井眼稳定泥浆密度,,,,,,,,,,(),,,,,,,,,,(Bp),,Mohr-CoulombGriffith,MorimtaMohr-Coulomb,,,,Mohr-CoulombMohr-Coulomb:cot2(!/4-∀/2)+2Ccot(!/4-∀/2)(1),,(2)(Bp)Bp=#(3H-h)-2∃K+%pp(K2-1)(K2+#)(2):Bp,MPa;Hh,MPa;K=tan-1(!/4-∀/2),∀,!/6;∃,MPa;%Biot,;pp,MPa;#,(Bpgm)57241(3)Bpgm=1000Bp/(9.80665Dep)(3):Bpgmg/cm3;Dep,m(2),%ppHh∃∀#(&d)Biot(%)(∃)(∀),,,,,!1,2∀,(),,,,,,,1.&d,(4)&d,&d=0.5(∋ts/∋tp)2-1(∋ts/∋tp)2-1(4):ud,;∋tp∋ts,&s/ft2.Biot%Biot%(0%#1)%=1%,,%%=1-(b(3/∋t2p-4/∋t2s)(m(3/∋t2mp-4/∋t2ms)(5):(b(m,g/cm3;∋tmp∋tms,&s/ft3.Hh,Hh,,,,(6)(7)H=ud1-ud+A(v-%pp)+%pp(6)h=ud1-ud+B(v-%pp)+%pp(7),v=0.0098068(∃H0+%HH0(bdH:((b,g/cm3;H0H,m;AB(A&B),Hh,(6)(7)4.∃∀∃∀∃(8),∀,(9)∃=4.69433∃107(b2(1-2ud)∃1+ud1-ud∃(1+0.78Vsh)/∋t4p(8)∀=[2.654∃lg(M+M2+1)+20]!/180(9),M=58.93-1.785∃:Vsh,%,GR5.##=n/l(10),l=2-pm;5820041n=ud(1-w)-1(1-w)(1-ud)pm-(2ud-1)(1-w)(1-ud)(1+w)pwm1-w:l)n,MPa;,MPa;pm=9.80665∃Dep∃Dmud/1000,MPa;Dmud,g/cm3;w,0.1VisualFortran,Forward,(3)()LJ2(3),,LJ2(1)1LJ2(m)(g/cm3)(g/cm3)1461.0~1929.51929.5~2128.52128.5~2261.02261.0~2566.52566.5~2737.02737.0~3017.53017.5~3370.01.02~1.151.02~1.031.0~1.251.001.02~1.191.02~1.161.46~1.491.001.001.010.981.011.031.43,;,1,,,,LJ2(3050~3200m),LJ23017.5~3370m,1.30~1.43g/cm3,1.46~1.49g/cm3,,,,,,,,,,,,%Hh∃∀#,,,,1..,1999;17(3):12~132..,2001;24(4):21~243..,2002;17(3):23~264TangXMetalIdentifyingandEstimatingFormationStressfromBoreholeMonopoleandCrossDipoleAcousticMeasurement.SPWLA40th,1999(20030520)59241SeaareaSUBJECTHEADINGS:BohaiGulf,Horizontalextendedreachwells,Completiontechnology,Completionfluidssystem,Reservoirprotection,InhousestudyJiangWei(seniorengineer)isthedeputydirectorofResearchCenter,CNOOCAdd:EastThirdRingRd,ChaoyangDistrict,Beijing(100027),ChinaTel:[phone]FORMATIONCOLLAPSEDPRESSUREPREDICTINGWITHLOGGINGDATA2)LiuZhidi,XiaHongquan(SouthwestPetroleumInstitute)andZhangYuanze(SichuanPetroleumAdministration)NATURGASINDv24,no1,pp57~59,1/25/2004(ISSN1000-0976;InChinese)ABSTRACT:It∋sveryimportanttodeterminetheformationcollapsedpressureprofileforboreholestabilizationandsafedrillingThearticlefocusesonstudyinghowtoaccuratelyacquirerockmechanicsparametersneededbythemodelfromloggingdataaftersettingupthecalculatingmodelofformationcollapsedpressureThemethodisappliedtothefineinterpretationandprocessingofwellsLJ2andothersloggingdatainLuojiazhaistructureAndtheformationcollapsedpressureandmuddensitythatcankeepborestabilityarecalculatedforthedifferentdepthsandsectionsofthewellsTheresultscalculatedbythemethodareusedtopracticaldrillingandmakegoodpractice,andprovidethebasisforscientificdrillingonthemuddensitydesignoftheareaSUBJECTHEADINGS:Loggingdata,Formationcollapsedpressure,Holestabilization,MuddensityLiuZhidi,bornin1977,isstudyingfordoctoraldegreeAdd:XingduDistrict,Chengdu,Sichuan(610500),ChinaTel:[phone]APPLICATIONOF3DVISUALIZATIONTECHNIQUEINPETROLEUMDRILLING1)GuoZhaoxue,ChenPingandZhouKaiji(SouthwestPetroleumInstitute)NATURGASINDv24,no1,pp60~63,1/25/2004(ISSN1000-0976;InChinese)ABSTRACT:Alongwiththeincreaseindifficultyofoilandgasexplorationanddevelopment,thedegreeofcomplicationofpetroleumdrillingisrelevantlyincreasedInordertoraisedrillingbenefits,theinterchangeofthesedisciplinesasdrilling,geologyandgeophysicsshouldbestrengthenedandthedatarelatedtothesedisciplinesshouldbeusedasmuchaspossibleTheapplicationof3Dvisualizationtechniqueindrillingengineeringisdescribedinthepaper.Thoughcombiningthedrilleddataandpredrillingdesigndatawiththeirrelateddataonmechanics,geologyandwelllog,theinterrelationsamongthemmaybevisuallyshowupina3Dvisualizationenvironment.Onthebasisofthis,theabilitiesofthedrillingpersonnelinanalyzingcomplicateddataandextractingusablemessagescanbeeffectivelyenhancedintheprocessesofpredrillingdesign,drillingmonitoring,drillingtroublepredictionandprocessingandpostdrillinganalysis,etc,thusacceleratingtheirexchangeandcooperationwiththedisciplinesrelatedandraisingthedrillingbenefitsSUBJECTHEADINGS:Drilling,Visualization,Design,Monitoring,Drillingproblem,ComprehensiveanalysisGuoZhaoxue(Master),bornin1974,receivedhisMaster∋sdegreeinoilandgasdrillingengineeringfromSouthwestPetroleumInstitutein2000NowheisstudyingforhisDoctor∋sdegreeintheInstituteandismainlyengagedintheresearchondrillingsimulationandtheapplicationofthe3DvisualizationtechniqueindrillingengineeringAdd:GraduateSchoolofSouthwestPetroleumInstitute,Xindu,Chengdu,Sichuan(610500),ChinaTel:[phone]MATHEMATICALMODELTORECOVERGASHYDRATEFROMFORMATIONS2)YuXichong1,2,WuYingxiang1,AnWeijie2,LiQingping2andWuYaling(1MechanicsInstituteofChineseSciencesAcademy;2ResearchCenterofCNOOC;3SichuanPetroleumAdministration).NATURGASINDv24,no1,pp63~67,1/25/2004(ISSN1000-0976;InChinese)ABSTRACT:Now,themainmethodstorecovernaturalgasfromgashydrateare:increasingformationtemperatur