:SE1S(40672078)。l:2007-05-22Te:(1979-),3,a,pV,VY。cI|:1000-3754 (2007)06-0024-04MYZEMugladFulaJ王林1, 姜在兴1, 冯磊1, 潘校华2, 李志2(1.Sv?,100083;2.SFS=Z,100083)K1:以Muglad盆地Fula坳陷的AbuGabra组上段为例, 探讨了深水湖盆层序地层单元的识别方法。地震反射终止类型和地震相分析有助于划分大级别的层序界面, 对地震资料的时频分析指导了三级层序及其体系域的识别, 放射性测井资料的应用则可在钻井剖面上较精确地确定各级层序地层单元的界面。最终在AbuGabra组上段划分了 4个三级层序, 其中层序二为三分层序, 包括低位体系域、湖侵体系域和高位体系域, 其他均为 TR层序, 分为湖侵体系域和湖退体系域。1oM:深水沉积;层序地层学;时频分析;放射性测井;Fula坳陷ms|:TE121DSM:AIdentificationofsequencereservoirsectionindeep-waterlakebasinsTakingFuladepressioninMugladbasinasanexampleWANGLin1, JIANGZai-xing1, FENGLei1, PANXiao-hua2, LIZhi2(1.ResourcesInstituteofChinaUniversityofGeosciences, Beijing100083, China;2.CNPCInternationalResearchCenter, Beijing100083, China)Abstract:BytakingtheuppermemberofAbuGabraFormationinFuladepressionofMugladbasinasanexample,methodsforidentifyingsequencesectionofreservoirindeep-waterbasinsarediscussed.Analysesofseismicreflectionterminationformsandseismicfaciescanbeusedtoidentifyhigh-leveledsequenceboundaries.Seismictime-frequen-cyanalysescanbeappliedtotheidentificationofthird-levelsequencesandothersystemdomains.Theapplicationofnuclearloggingcurvescanbeusedtoaccuratelydetermineboundariesofsequencereservoirsections.Finaly, theuppermemberofAbuGabraFormationisdividedintofourthird-levelsequences, andSequence2 issubdividedintothreepartsaslowordersystemdomain, laketransgressivesystemdoaminandhighordersystemdomain, andtheotherse-quencesarealTRsequenceswhichcanbesubdividedintolaketransgresivesystemdomainandlakeregressivesystemdoamin.Keywords:Deep-waterdeposition;sequencestratigraphy;time-frequencyanalyses;nuclearlogging;Fuladepres-sion20W90M,b-?Z,dMLlv5。-,s1ZEX1!,iOr77?,vT0us,yo%Y,YT5VVQTwLMQ,MYM1。7/u=,o=Yl,VC,?Bt4MY,s1ZEB451 。1uMugladdv#2,24 第 26卷第 6期大庆石油地质与开发P.G.O.D.D.2007年 12月3dM!Kv,-e?、3!。FulaJMugladBQ)/,d*Gf/N。SM/、/dK 3, 4 。t、/Q1MY、s,MM9sGB。t,iA+Q1,、/M+ivs,iOs_zV1。yN,M+:_MsMY9BrZE,7OZE9VMsT4LHq。u=AbuGabraF、v,sY!。VJH, AbuGabraF+A,VnAbuGabraF_HU(1。=C+4MY, AbuGabraFBentiuFVC,AbuGabraF?MCBentiuF?MWMQAY,QyM;/M5z,、Ms-M,MY6。Q1MYMsVs)YH,sOq,1M1)m。3HsMB,=、yTT,tT/F、M,VC+。t、MoABY,tYQV9o$。Hs/,oqM+VQF8FRY%,RYFsv,R%Fs。q+bWM?pQL=81 5。Hs/X:)Y8q+。Q/Wu/s)Y8,8WM3*,v8cl8。yN,Hs/qs,VMYvl)8。t8Q8)s+#(1。VPoHWZ_CBM,MloHsZE+。yN,YVloHsVsoMHM?p。?zQ|qM,zH+MorletlofHs,HTAUZTLz。m1ZUH+W1,m