中美页岩气成藏条件_分布特征差异研究与启示(6)

［Keywords］shalegas；formationcondition；distributioncharacteristics；organic-richshale；comparisonbetweenChinaandU．S．；enlightenment

（上接55页）

Formationconditionsofshaleoilandgasin

Bonansub-sag，JiyangDepression

ZhangShanwen1，WangYongshi2，ZhangLinye2，LiZheng2，

ZhuJiajun2，GongJianqiang2，HaoYunqing2

（1．ShengliOilfieldBranchofSINOPECCo．Ltd．，Dongying，Shandong257001，China；2．TheGeological

ScientificResearchInstituteofShengliOilfieldBranch，SINOPECCo．Ltd．，

Dongying，Shandong257015，China）

Abstract］Throughabundantdataofseism，drilling，logging，mineral，geochemistryandphysicalproper-［

ties，itisconcludedthattheshaleofPaleogeneEs1，LowerEs3andUpperEs4inBonansub-sag，JiyangDepres-sionischaracterizedbywidedistributionandhighabundance，bettertypes（mainlywithtypeIandII）andwidematurityrangeoforganicmatter，withamaterialbasisfortheformationofshaleoilandgasinalargescale．Mean-while，thelowcontentofclaymineralandhighcontentofbrittlemineral（mainlywithcarbonate）inthe3setsofshalearefavorablefortheexploitationofshaleoilandgas．Inaddition，thehighpressurecoefficientandthedevel-opmentofdifferentmicro-poresandmicro-cracksintheshalearealsofavorableforthepreservationofshaleoilandgas，becausethereticularstoragesystemiseasytoformunderthiscondition．Accordingtotheoilandwatersatura-tiondata，theupperofNo．12layertoupperofNo．13layerintheLowerEs3formationarethefavorablelayersforshaleoilandgasexplorationinBonansub-sagbecauseoftheirhighoilandgascontentinunitrock．Especially，asthemostfavorablerocktype，thelamiatedargillaceouslimestonecouldbeeffectivelyexplored．

［Keywords］shaleoilandgas；Paleogene；terrestrialshale；mineralcomposition；organiccarboncontent

2012年第14卷第6期

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