饶阳凹陷马西地区古近系层序地层与隐蔽油气藏勘探

29220096SedimentaryGeologyandTethyanGeologyVo.l29No.2Jun.2009:10093850(2009)02000107饶阳凹陷马西地区古近系层序地层与隐蔽油气藏勘探张大智1,2,纪友亮3,顾家裕1,初丽兰4,季丽丹1(1.中国石油勘探开发研究院,北京100083;2.中石油杭州地质研究院,浙江杭州310023;3.中国石油大学,北京102249;4.大庆油田勘探开发研究院,黑龙江大庆163712):20080615:(1981),,,Emai:[e-mail]:!(:2004BA616A0402):,,310∀#∃,;%&∋()∗+,,,,:;;;;:TE121.3+4:A,,[1~7],,,1,,,,,6300km2,,[8],700km2,,(1),,,,,[9,10],,,,,,22.1,(2)1Fig.1SimplifiedstructuralmapoftheMaxiregion,(),[2,11],[8],,(1)1Table1SequencestratigraphicdivisionandcorrelationintheMaxiregion∃#∀+∗)(∋&%T2T3-1T3-2T3T4T5T6-1T6-2T6T7Tg2.2,,[2,11,12]1.,,,(,(2)2.,,,96,∗+,,,,,(3)3.,,19,,,(3)4.,,,,(3)5.,,,22009(2)211394()a.;b.Fig.2Seismicprofile(a)andgeologicalinterpretation(b)oftheMa113-Ma94wellsintheMaxiregion31.;2.Fig.3LithologyandwelllogsaroundthesequenceboundariesintheMaxiregion1=mudstone;2=finegrainedsandstone,%&∋()∗+,(4);∀#∃,3,[11],3.1,[9][2,11,13],,,,,,,(+,(,,,600~1000m,,,,+,,3(2)420+1.;2.;3.;4.;5.Fig.4InterpretationofSequenceVIIthroughtheXi20well1=dolostone;2=mudstone;3=siltstone;4=finegrainedsandstone;5=oilimmersion,3.2,,∗∋(),,,,,+∀,+50~150m,,,+,,,,,∗50~150m,∗,(,,,3.3,,,[13,14],,,%&()∗+,[9]4,(2)4.1,,:[15],,,,,,,,,∋42009(2)2Table2ClassificationofsubtlehydrocarbonaccumulationsintheMaxiregion)∋,,,,,,,;,,,,(,,,,,;,,,;,,,),,,,,,,,(;,,;,,,;,,,,,,,,,,;,;,,(5)4.2,,∋(),(6),,5(2)5(1.;2.;3.;4.;5.;6.;7.Fig.5ModelforthedevelopmentofsubtlehydrocarbonaccumulationsinSequenceIVintheMaxiregion1=sequenceboundary;2=initialfloodingsurface;3=maximumfloodingsurface;4=sourcerock;5=migrationdirectionofhydrocarbons;6=sandstone;7=hydrocarbonaccumulation6(line609)Fig.6SeismicprofilethroughtheE-WorientedsequencesintheMaxiregion(line609),,,(,9,5,:(1),,%&∋()∗+,;∀#∃,(2),,,(3),,,,(4),62009(2),,(5)∋(),,,:[1].[J].,1995,22(4):12-17.[2],.[J].:,1996,1-74.[3],,,.[J].,1997,18(1):7-13.[4],,,.-[J].-,2000,25(3):26O-267.[5],,.[J].,2000,7(3):119-132.[6],.[J].,2001,47(3):278-286.[7],.[J].,2003,24(1):49-52.[8],,,.[J].,2001,3(1):45-49.[9],,,.[J].,2005,40():117-120.[10],,,.[J].,2006,41():86-92.[11],,,.:.[M].:,2003:45-87.[12],.[J].,1996,20(4):1-5.[13],,.[M].:,2006:165-168.[14],,,.,(2004),:.2005:100-108.[15],.[J].,2006,33(1):22-24.PalaeogenesequencestratigraphyandsubtlehydrocarbonexplorationintheMaxiregion,Raoyangdepression,HebeiZHANGDazhi1,2,JIYouliang3,GUJiayu1,CHULilan4,JILidan1(1.ResearchInstituteofPetroleumExplorationandDevelopment,PetroChina,Beijing100083,China;2.HangzhouResearchInstituteofGeology,PetroChina,Hangzhou310023,Zhejiang,China;3.ChinaUniversityofPetroleum,Beijing102249,China;4.ResearchInstituteofPetroleumExplorationandDevelopment,DaqingOilFieldCompany,Daqing163712,Heilongjiang,China)Abstract:ThePalaeogenesequencestratigraphyintheMaxiregion,Raoyangdepressionmaybeclassified,onthebasisofseismicdata,welllogsandsedimentaryfacies,into3secondordersequencesand10thirdordersequences.ThethirdordersequencesVIII,IXandXareassignedtothefluvialsequencesincludingthebaselevelrisingsystemstractandbaselevelfallingsystemstrac.tThethirdordersequences%,&,∋,(,),∗and+representthelacustrinesequences,eachofwhichconsistsoflowstandsystemstrac,ttransgressivesystemstractandhighstandsystemstrac.tThesyndepositionalstructuralbreaksintheMaxiregionhaveexercisedamajorcontrolonthedistributionofsandstones,developmentofsourcerocks,migrationofhydrocarbons,andaccumulationofsubtlehydrocarbonsinthisregion.ThemodelfortheaccumulationofsubtlehydrocarbonsshowsthatSequences∋,(andVbelowthestructuralbreaksmayberegardedasthetargetsforthefurtherexplorationofhydrocarbons.Keywords:Raoyangdepression;Maxiregion;Palaeogene;sequencestratigraphy;subtlehydrocarbons7