天然气的测井勘探与评价技术

221Vol.22No.120072(:179~185)PROGRESSINGEOPHYSICSFeb.2007张福明,查明,邵才瑞,印兴耀((),257061)天然气在我国新世纪能源战略中占重要地位,但目前其总体勘探程度较低.测井是一种非常重要而有效的天然气勘探手段,本文旨在对如何利用测井方法识别和评价天然气进行系统总结分析和展望.在对天然气的测井响应特点和其岩石物理基础进行简单总结说明的基础上,对基于测井的天然气定性识别和定量评价技术进行了归纳总结和分析,并对中深部天然气层的测井响应特点及其识别评价方法以及测井新技术在天然气勘探中的应用进行了分析和展望,最后对天然气勘探中的基础研究测井系列选择多学科结合等方面给出了笔者简单的看法.天然气,中深层,测井,勘探,评价P631A10042903(2007)01017907TechnologyofnaturalgasexplorationandevaluationbasedonwellloggingdataZHANGFuming,ZHAMing,SHAOCairui,YINXingyao(Collegeofgeoresourcesandinformation,ChinaUniversityofPetroleum,Dongying257061,China)AbstractThedegreeofnaturalgasexplorationwaslowinourcountrythoughgasisveryimportantforourenergystratagem.Asanuppermostmethodtogainsubsurfaceinformation,wellloggingisaveryimportantandeffectivemethodfornaturalgasexploration.Thepaperwantstosummarizeandanalyzehowtoidentifyandevaluategaszonemainlybasedonwellloggingdata,andalsogiveprospects.First,avarietyofwelllogresponseingaszonesandtheirpetrophysicsbasisweresummarizedbriefly.Secondly,qualitativeidentifyingandquantitativeevaluatingmethodsortechniquesweresummedup.Thirdly,thepaperaimedatthemediumdeepdepthgasandapplicationofadvancedwelllogging.Lastly,thewritersgivetheirviewpointsonfundamentalresearch,selectionofwellloggingsuiteandcombinationorcooperationofmultisubjectsuchasgeology,seismic,formationtestingandsoon.Keywordsnaturalgas,mediumdeepdepth,welllogging,exploration,evaluation20051210;20060226.,,1968,,(),,(Email:[e-mail]).0引言,,,(3500m[1]),...,,.Kukal[2],,TITEGAS.,.,.221天然气的测井响应特征及其岩石物理基础,,..(1):.(),,.(2):,,.,.(3)[3]:,..,,.(4)[3]:.,,..,,,.(5)[3]:,().,.,(),..2常用的天然气测井识别方法,,,,.,.2.1,.,,,,.(1).,,.,,[4].(2)[4].!Rtt,(Rt).Rt!Rt,RtRt,RtRt.(3)[4].,,,(/t).,.(4)![5]./,,,,,.[6][7][8].2.2,.2.2.1三孔隙度相对值交会图技术[8](),ACREDENRCNRENGREEc,.Ec:ACRE=(ACSH-AC)/(ACSH-ACM),DENR=(DEN-DSH)/(DM-DSH),CNRE=(CNSH-CNL)/(CNSH-CNM),NGRE=(NG-NGSH)/(NGM-NGSH).1801,:Ec=DEN/AC2∀105A.(A)ACDENCNLNG,ACSHDSHCNSHNGSH,ACMDMCNMNGM.(1)CNRE!ACRE.,CNRE;,ACRE.CNREACRE.(2)Ec!CNRE.,.Ec,.Ec,CNRE(),.(3)DENR!CNRE.,DEN,DENR;,CNRE.DENRCNRE.(4)NGRE!ACRE.,NGRE;,ACRE,.2.2.2测井组合参数交会图识别,.(1)t/b!#Sg[9].,t,b,t/b,,t/b.,#Sg.(2)RD/RS!Vsh[9]..,,RD/RS;Vsh,Vsh.RD/RS!Vsh,VshRD/RS.2.3,:()[10],[10],![7],[11],[11],[10~12].2.4,.(RFT),[8].2.5,,.,,.[12].,1[14].3常用的天然气测井定量评价方法,.3.1(1)[15],[15~17],[18]ttma=1(1-!)x.0~50%,,,.Raymer[19],,,0~100%,,,,.(2)[11].,().,2~3,.!=!N+!D4+!2N+!2D8,18122(!,!N,!D).3.2(1).,,[20],Sg,9%Sg,9%..(2).,,,,.,.(3).,..,SAND2;,,.(4)Timur.,,,,,.(5)(Kukal)[2].,(GR),,,Sxo(),Sxo,,.,[20].,[32].[21,22][12][23].,,,.4中深层天然气评价4.1,,,,.,,,,.,[30],,[10];,,,.,,.4.2,,,[7].,[33],.(1).,.(2).,,..,,,..(3)..4.34.3.1基于常规测井资料的评价方法1821,:,,.,,,,.4.3.2利用测井新技术识别中深层天然气,(C/O)(PND)..(1),.,,.C/O[34]:FCC/CI,SOCSO.,FCCCI,,FCCCI;,FCCCI.SOSOC,SOC,SOC.,,,[11,35],[36].(2),().,,.[37].T1T2D.T1,T1T2,T2.T2[24,25].,T2.TE,T2,D,T2;D,T2.TE,T2,.,[24].,,[26].(3),.∃!.,[11]DTS1:DTS1=tc-tcmatcf-tcmatsf+1-tc-tcmatcf-tcmatma,t,csmaf().DTSDTS1,DTS1DTS,DTS1%DTS..&Vp/Vstc.Vp/Vs()tc(),,,.∋..,,.,.,,,,..(18322,.(4)PND,,.,().,[27,28],.4.3.3定量计算储层参数,.,[29],,[30],.,,.,.,,[38].5认识与展望,,.,,.,,.,..,.,.,.,..();,;,,PND.,,,,.,[14].,.,,[31],.,.,,,21.(References):[1].[J].,2000,20(5):1~4.[2]KukalGC.Asystematicapproachfortheeffectiveloganalysisoftightgassands[J].SPE/DOE/GRI12851,1984.[3].[M].:,1985.[4].[J].,2000,20(2):42~44.[5].[M].:,2003,214~215.[6],.[M].:,1982,103~106.[7],,.[J].,1996,20(4):244~249.[8].[J].,1995,16(2):135~139.[9],,.!!![J].,2003,22(4):65~70.[10],,,.1841,:[J].,2004,18(5):20~22.[11].[M].:,1994.[12],.[J].,1994,8(1):119~125.[13].[M].:,1997.[14],.[J].,1997,17(1):16~18.[15],,,,.[J].,2002,26(2):131~133.[16],.[J].,1998,33(5):671~678,690.[17],,,.[J].,2004,19(1):524~532.[18]RaigaClemenceauJ,MartinJP,NicoletisS.Theconceptofacousticformationfactorformoreaccurateporositydeterminationfromsonictransittimedata[J].SPWLA,27th,PaperG,1986.[19]RaymerLL,HuntER,GardnerJS.Animprovedsonictransittimetoporositytransform[J].SPWLA,21st,1980.[20].[J].,2002;7(3):65~68.[21],.[M].:,1992.[22].[M].:,1994.[23]BrieA,EndoT,JohnsonDL,PampuriF.Quantitativeformationpermeabilityevaluationfromstoneleywaves[J].SPE60905,2000.[24],,.[J].,2001,16(2):42~49.[25],.()[J].,1999,40~44.[26]HolgerF.Thern,ChenSH.AdeterministicmethodforgasreservoirevaluationusingdualwaittimeNMRanddensitylogdata[J].SPE56792,1999.[27],,.!!!(PNDS)[A].:.[C].:,2001,121~126.[28],,,.PND[J].,2004,26(4):92~93.[29]CharpentierRR,LawBE,PrenskySE.Quantitativemodelofoverpressuredgasresourcesofthepinedaleanticline,wyoming[J].SPE/DOE16404,1987.[30]LiSL,DongMZ,DaiLM,LiZW,PanXF.Determinationofgaspermeabilityoftightreservoircoreswithoutusingklinkenbergcorrelation[J].SPE88472,2004.[31]AriadjiT,SuryantoH,MarianiS.ReservoircharacterizationthroughasinglewellnumericalstudyusingDSTmatchingforagascondensatereservoir[J].SPE93218,2005.[32].[J].,2005,26(3):86~89.[33],,,.[J].,2005,2(2):134~138.[34],,.[J].:,2002.[35],,,.RMT[J].,2005,26(3):82~85.[36],,,.C/O[J].,2005,48(2):459~464.[37],,,.T2[J].,2005,48(2):373~378.[38],,,.[J].,2005,23(4):613~619.185