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1、2015年1O月大慶石油地質(zhì)與開發(fā)0ct..2015第34卷第5期PetroleumGeologyandOilfield,DevelopmentinDaqingVo1.34No.5DOI:10.3969/J.ISSN.1000.3754.2015.05.004塔東地區(qū)奧陶系一寒武系烴源巖評價劉憶彤劉忠生李景坤曾花森高維。(1.東北石油大學(xué)地球科學(xué)學(xué)院,黑龍江大慶163318;2.大慶油田有限責(zé)任公司勘探開發(fā)研究院,黑龍江大慶1637123.大慶油田有限責(zé)任公司采氣分公司,黑龍江大慶163453)摘要:塔里木盆地塔東地區(qū)是大慶油田油氣勘探的重要接替領(lǐng)域,其有效烴源巖、生烴潛力評價直接影響該區(qū)的
2、整體勘探?jīng)Q策。在巖石熱解分析、有機質(zhì)鏡下檢測等實驗分析基礎(chǔ)上,對奧陶系、寒武系烴源巖的有機碳含量、有機質(zhì)類型及有機質(zhì)成熟度等進行了分析。結(jié)果表明:去污染分析后的奧陶統(tǒng)卻爾卻克組烴源巖有機碳含量較低;有機質(zhì)類型既有腐殖型也有腐泥型;上奧陶統(tǒng)烴源巖為非一差烴源巖,中一下奧陶統(tǒng)的黑土凹組、寒武系為好烴源巖,有機質(zhì)類型以海相腐泥型為主,烴源巖處于過成熟階段;泥巖、泥質(zhì)灰?guī)r有機質(zhì)含量較高,為有效烴源巖,碳酸鹽巖的有機質(zhì)含量較低,多為非烴源巖。關(guān)鍵詞:塔東;烴源巖;有機質(zhì);成熟度;鉆井液污染中圖分類號:TE122。1文獻標識碼:A文章編號:1000—3754(2015)O5.0018.07EVALUAT
3、IONSOFORDoVICIANANDCAMBRIANSoURCERoCKSINEASTTARIMLIUYitong,LIUZhongsheng,LIJingkun,ZENGHuasen,GAOWei。(1.NortheastPetroleumUniversity,Daqing163318,China;2.ExplorationandDevelopmentResearchInstituteofDaqingOilfieldCo.Ltd.,Daqing163712,China;3.GasProductionBranchofDaqingOilfieldCo.Ltd.,Daqing163453,Ch
4、ina)Abstract:EastTarimistheimportantreplacingregionofthepetroleumexplorationofDaqingOilfield,theevalua.tionsoftheeffectivehydrocarbonsourcerocksandhydrocarbongeneratingpotentialsdirectlyinfluencethedecisionmakingofthewholeexplorationinthisarea.Onthebasesoftheexperimentalanalysesoftherockpyrolysis,t
5、hemicroscopeobservationoftheorganicmattersandSOforth,theorganiccarboncontents,typesmaturityandSOon,forOrdovicianandCambriansourcerocksarefiguredout.TheresultsshowthatthecontentinOrdovicianQueer—quekeFormationisratherloweraftertheanalysisofthedecontamination;therearebothhumicandsapropelictypesoftheo
6、rganicmatters;UpperOrdoviciansourcerocksbelongtonon—poorhydrocarbonsourcerocks,whiletheonesinHeituaoFormationandCambriansysteminMiddle.LowerOrdovicianseriesareprettybetter.theorganicmattertypeismainlymarinesapropelicone,thesourcerocksareinthestageofovermaturity;thecontentsoftheorganicmattersinthemu
7、dstoneandargillaceouslimestonearegreatlyhigher,thustheeffectivesourcerocksaregenerated,whereasthecontentsoftheorganicmattersinthecarbonaterocksareratherlower,SOtherocksdevelopintonon.收稿日期:2014—08—07改回日期:201