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1、2011年12月,第l7卷,第4期,586—593頁December2011,Vo1.17,No.4,P.586-593濟(jì)陽坳陷古近系沙四段上亞段烴源巖沉積有機相研究劉慶,張林曄,宋國奇,王茹1.中國石化勝利油田分公司地質(zhì)科學(xué)研究院,東營257015;2.勝利油田博士后工作站,東營257015;3.中國石化勝利油田分公司,東營257015摘要:根據(jù)沉積構(gòu)造、古生物組合、有機質(zhì)賦存方式等特征研究,明確了沉積過程底水含氧量對古近系湖相烴源巖中有機質(zhì)的組成和含量的控制作用。在此基礎(chǔ)上借鑒沉積有機相和古氧相研究的成果,將濟(jì)陽坳陷古近系沙
2、四段上亞段湖相烴源巖劃分為四種沉積有機相,分別為缺氧相、短暫充氧相、低氧相、充氧相,并且確定了不同類型沉積有機相的判識標(biāo)志。并結(jié)合測井資料開展了烴源巖沉積有機相的單井、連井及平面分布特征分析,提出沙四段上亞段烴源巖的發(fā)育存在著明顯的東西差異,東部地區(qū)明顯優(yōu)于西部地區(qū),而不同走向斷裂的活動差異控制了優(yōu)質(zhì)烴源巖的分布。沙四段上亞段烴源巖的分布規(guī)律對于下一步勘探?jīng)Q策的制定和深層隱蔽油氣藏成藏規(guī)律研究具有重要意義。關(guān)鍵詞:濟(jì)陽坳陷;沙四段上亞段;沉積有機相;測井曲線;斷裂活動中圖分類號:P618.130文獻(xiàn)標(biāo)識碼:A文章編號:1006—
3、7493(2011)04—0586—08SedimentaryOrganicFaciesofthePalaeogeneUpperE23S4Source—gaRocksinJiyangDepression高LIUQing,ZHANGLin—ye’,SONGGuo.qi。,WANGRu’校f1.GeologyScientificResearchInstituteofShengliOilfieldBranchCompany,SINOPEC,Dongying257015,China;C2.Post—doctoralScientificR
4、esearchStationofShengliOilfield,Dongying257015China;電,3.ShengliOilfieldBranchCompany,SINOPEC,Dongying257015,China質(zhì)Abstract:Investigationofsedimentarystructures,palaeontologyassociationsandorganicmatteroccurrenceshowsthatthe學(xué)SlacustrinedepositionofPalaeogeneupperE2_3s
5、hydrocarbonsourcerocksissignificantlycontrolledbythebottomanoxicityinJiyangDepression.Basedonthepreviousstudiesonsedimentaryorganicfaciesandpalaeo—oxygenfacies,thesourcerocksare報dividedintofourtypesofsedimentaryorganicfaciesincludinganoxicfaciesanaerobicfacies,dysaer
6、obicfacies,andaerobicfacies,andtheidentificationmarkersofeachfaciesaresummarized.Togetherwithwellloggingdata,theupperE23Ssourcerocks—areevaluatedbysinglewell,well—tieanddistributionofsedimentaryorganicfaciesanalyses.Theresultsshowgreatdifferenceintheoccu~enceoftheupp
7、erE23Shydrocarbonsourcerocksfromtheeasttothewest,andtheuppersourcerocksintheeastareobviouslysuperiortothoseinthewest.Inaddition,itisfoundthatthedistributionofexcellentsourcerocksismainlycontrolledbythenorthwestandnortheastfauhingmovement.Thefindingwillhavegreatsignif
8、icanceformakingfutureexplorationstrategyandunderstandingdeepsubtlereservoirformation.Keywords:SedimentaryOrganicFacies,JiyangDepres