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1、2013年9月,第l9卷,第3期,544—551頁(yè)高校地質(zhì)學(xué)報(bào)September2013,Vo1.19,No.3,P.544—551GeologicalJournalofChinaUniversities開魯盆地陸東凹陷九佛堂組一沙海組地震相研究謝慶賓,劉明潔,陳菁萍,王鵬,白魯山41.中國(guó)石油大學(xué)(北京)地球科學(xué)學(xué)院,北京102249;2.中國(guó)石化西北油氣田分公司勘探開發(fā)研究院,烏魯木齊830013;3.中國(guó)石油東方地球物理公司勘探開發(fā)研究院,涿州072750;4.中國(guó)石油遼河油田勘探開發(fā)研究院,盤錦124010
2、摘要:開魯盆地陸東凹陷是遼河油田的外圍探區(qū),依據(jù)地震反射終止關(guān)系,結(jié)合區(qū)域地質(zhì)背景,將陸東凹陷下白堊統(tǒng)的九佛堂組一沙海組劃分成2個(gè)地震層序,即九佛堂層序和沙海層序。利用地震反射內(nèi)部結(jié)構(gòu)和外部幾何形態(tài),結(jié)合地震反射同相軸的振幅和連續(xù)性等參數(shù),在九佛堂層序和沙海層序內(nèi)識(shí)別出平行席狀、亞平行席狀、楔狀、前積、雜亂、透鏡狀共6種地震相,并對(duì)其特征進(jìn)行了描述。各種地震相平面分布具有差異性、縱向上具有繼承性和演化性。經(jīng)過(guò)綜合解釋,建立地震相與單井沉積相之間的響應(yīng)關(guān)系,把地震相轉(zhuǎn)化為沉積相。以湖泊沉積理論為指導(dǎo),建立目的層各層序
3、地震相一沉積相模式,結(jié)果表明,目的層主要發(fā)育扇三角洲、近岸水下扇、濁積扇以及湖泊等沉積相。關(guān)鍵詞:地震層序;地震相;沉積相;陸東凹陷;開魯盆地中圖分類號(hào):P618.13文獻(xiàn)標(biāo)識(shí)碼:A文章編號(hào):1006—7493(2013)03—544-08SeismicFaciesResearchoftheJiufotangFormationandShahaiFormationinLudongDepression,KailuBasinXIEQingbin,LIUMingjie,CHENJingping,WANGPeng。,BAIL
4、ushan1.CollegeofGeosciences,ChinaUniversityofPetroleum(Beijing),Beijing102249,China;2.ResearchInstituteofExplorationandDevelopment,NoahwestoilfieldCompany,Sinopec,Wulumuqi830013,China;3.ResearchInstituteofExplorationandDevelopment,BureauofGeophysicalProspectin
5、g,PetroChina,Zhuozhou072750,China;4.ResearchInstituteofExplorationandDevelopment,LiaoheOilfieldCompany,PetroChina,Panjin124010,ChinaAbstract:LudongDepressionistheperipheralexploratoryareaofLiaoheOilfieldCompany.Basedontheseismicreflectionterminationrelationshi
6、pandtheregionalgeologicalbackground,theJiufotangFormationandShahaiFormationinLudongDepressioncanbedividedintotwoseismicsequences,i.e.,theJiufotangsequenceandshahaisequence.Accordingtotheinternalreflectiontextureandexternalgeometricconfigurationandincombination
7、withtheparametersofamplitudeandcontinuity,sixseismicfaciesareidentifiedinthetargetsequencesofthestudyarea,includingparallelsheet,sub—parallelsheet,wedgeshaped,foreset,unorganizedandlenticularseismicfacies.Andtheircharacteristicsaredescribedindetail.Theseseismi
8、cfaciesshowvariationsinhorizontaldistributionandaresuccessiveandevolutionaryvertically.Seismicfaciesarecorrelatedtosedimentaryfaciesthroughacomprehensiveinterpretation.Theseismic—s