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1、石油勘探與開發(fā)2012年6月PETR0LEUMEXPL0RATIONANDDEVELOPMENTVO1_39No.3285文章編號:1000—0747(2012)03.0285.10塔里木盆地寒武系一奧陶系海相烴源巖識別與分布預(yù)測張水昌,一,高志勇,一,李建軍,張寶民r,顧喬元,盧玉紅。(1.提高石油采收率國家重點實驗室;2.中國石油勘探開發(fā)研究院;3.中國石油塔里木油田公司勘探開發(fā)研究院)基金項目:中國石油天然氣集團公司科技項目(041008100083)摘要:基于露頭實測、探地雷達淺層地震測量
2、、巖心分析、測井評價和地震追蹤等,建立了海相烴源巖識別方法和流程,對塔里木盆地寒武系一奧陶系海相烴源巖進行重新識別和空間展布預(yù)測。結(jié)果表明,寒武系一奧陶系垂向上共發(fā)育4套烴源巖,分別賦存于阿瓦提凹陷和滿加爾凹陷的下一中寒武統(tǒng)、塔東地區(qū)的下一中奧陶統(tǒng)黑土凹組、阿瓦提凹陷一阿滿過渡帶一滿加爾凹陷的中.上奧陶統(tǒng)薩爾干組一吐木休克組一卻爾卻克組、阿瓦提凹陷至塔中地區(qū)的上奧陶統(tǒng)印干組一良里塔格組中。寒武系一奧陶系海相烴源巖的發(fā)育受海平面上升控制明顯,分布具有鮮明的“等時異相”特征,即在同一時期,不同沉積相帶
3、沉積不同類型的烴源巖;烴源巖的形成還具有隨碳酸鹽巖盆地遷移而遷移,隨陸源碎屑大量注入而消亡的規(guī)律。圖10表1參43關(guān)鍵詞:塔里木盆地;寒武系一奧陶系;海相烴源巖;空間展布中圖分類號:TEl12文獻標(biāo)識碼:AIdentificationanddistributionofmarinehvdr0carbOnsourcerocksinthe0rdovicianandCambrianoftheTarimBasinZhangShuichang,GaoZhiyong,LiJianjun,ZhangBaomin,
4、GuQiaoyuan,LuYuhong(1.StateKeyLaboratoryofEnhancedOilRecovery,Beo'ing100083,China;2.PetroChinaResearchInstituteofPetroleumExploration&Development,Beijing100083,China;3.ResearchInstituteofPetroleumExplorationandDevelopment,PetroChinaTarimOilfieldCompan
5、y,Korla841000,China)Abstract:AprocessforidentilyingmarinehydrocarbonsourcerocksiSestablishedbasedonoutcropmeasurement,ground—penetratingradarsurvey,coreanalysis,loggingevaluation,seismicinterpretation,etc.ItisusedtoidentifytheCambrianandOrdovicianmari
6、nehydrocarbonsourcerocksandtopredicttheirspatialdistributionintheTarimBasin.TheredevelopedfoursuitesofmarinehydrocarbonsourcerocksintheTarimBasin,whicharedistributed,respectively,intheLower-MiddleCambrianoftheAwatiandManjiaersags,theHeituaoFormationof
7、theLower-MiddleOrdovicianintheTadongregion,theSaergan-Tumuxiuke_QueerquekeformationsoftheMiddle—uDperOrdovicianfromtheAwatiSagtotheManjiaerSag,andtheYin’ganandLianglitageformationsoftheUpperOrdovicianfromtheAwatiSagtotheTazhongarea.Thedevelopmentofthe
8、sesourcerocksiscontrolledbythesealeve1riseandtheyarecharacterizedbydiferentfaciesinthesamestage,namely,diferentsourcerocksaredepositedinsedimentaryfacieszonesatthesamestage.Theformationofthesourcerocksmigrateswiththecarbonatebasinandstopswhent