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时间:2020-01-14
《塔北地区志留系沥青砂岩热模拟实验及其供烃意义.pdf》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、第34卷第4期石油察劈沾届V01.34.No.42012年7月PETR0LEUMGEoL0GY&EXPERIMENTJu1.,2012文章编号:1001—6112(2012)04—0445—06塔北地区志留系沥青砂岩热模拟实验及其供烃意义黄继文,顾忆,陈强路,邵志兵(中国石油化工股份有限公司石油勘探开发研究院无锡石油地质研究所,江苏无锡214126)摘要:采用人工样品与地质样品2套模拟实验方案,开展了塔北志留系沥青砂岩作为再生烃源的生烃潜力的模拟实验。综合人工样品与地质模拟实验中不同温度的产率、产物组成变化,志留系沥青砂岩作为再生烃源的演化可分为蒸发分馏排油气阶段(模
2、拟温度100~300℃,相当于R。2.O%)3个不同的演化阶段。就塔北志留系沥青砂岩实际埋深及成熟度而言,能进入裂解油气生、排阶段的志留系沥青砂岩,现今埋深应在6000m以上的,主要分布于沙西一哈拉哈塘地区。资源量估算认为.塔北志留系沥青砂岩虽不足以形成大规模的油气聚集,但也是塔北地区重要的辅助性再生烃源。关键词:生烃潜力;再生烃源;热模拟;沥青砂岩;志留系;塔里木盆地中图分类号:TEl35.6文献标识码:AThermalsim
3、ulationofSilurianbituminoussandstoneanditssignificanceofhydrocarbonsupplyinnorthernTarimBasinHuangJiwen,GuYi,ChenQianglu,ShaoZhibing(WuxiResearchInstituteofPetroleumGeology,SINOPEC,Wuxi,Jiangsu214126,China)Abstract:TostudythehydrocarbongenerationpotentialoftheSilurianbituminoussandstone
4、inthenorthernTarimBasin,twosetsofexperimentprogramwerecarriedoutusingartificialandgeologicsamplesrespectively.Accord—ingtotheyieldingrateandproductcompositionunderdifferentexperimenttemperatures,thehydrocarbongenera·.tionprocessoftheSilurianbituminoussandstonewasdividedinto3stagesinclud
5、ingevaporativefractionationoil-and—gasexpulsionstage(withthesimulativetemperatureof100—300℃,equivalenttoR。<0.9%),crackingoil—and—gasexpulsionstage(withthesimulativetemperatureof325-400oC,equivalentto0.9%<。<1.8%),andcrackinggasexpulsionstage(withthesimulativetemperatureover400℃,equivalen
6、ttoR。>2.0%).AccordingtotheactualdepthandmaturityoftheSilurianbituminoussandstoneinthenorthernTarimBasin,thosesand—stonesduringthecrackingoil·-and--gasexpulsionstagewereburiedover6000mdeepandmainlylocatedinthewesternShayaandHalahatangareas.Throughresourceestimation,althoughthebituminouss
7、andstonescouldnotprovideenoughhydrocarbonsforaccumulationinlargescale,theywerethemostimportantauxiliaryregenerativehydrocarbonsourcerocksinthenorthernTarimBasin.Keywords:hydrocarbonpotential;regenerativehydrocarbonsourcerock;thermalsimulation;bituminoussand‘stone;Silurian;Tarim
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