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《实验研究碳酸盐岩储层烃类包裹体捕获模式.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、2010年6月岩矿测试Vo1.29,No.3June2010R0CKANDMINERALANALYSIS2l7220文章编号:0254—5357(2010)03—0217—04实验研究碳酸盐岩储层烃类包裹体捕获模式陈勇,葛云锦(中国石油大学(华东)地球资源与信息学院,山东青岛266555)摘要:在接近实际储层的温压条件下,利用人工合成烃类包裹体研究了碳酸盐岩储层烃类包裹体的捕获模式。人工合成烃类包裹体实验研究证实,在含油气条件下可以通过矿物晶体缺陷的愈合而形成烃类包裹体。根据矿物晶体缺陷类型和包裹体岩相学特征,
2、可以把烃类包裹体的捕获模式分为4种:点缺陷型、线缺陷型、面缺陷型和体缺陷型。由于矿物晶体生长过程中点缺陷和线缺陷容易愈合,多数包裹体以这两种模式形成。点缺陷型包裹体体积一般较小,不方便分析;而线缺陷型包裹体体积变化较大;面缺陷型包裹体数量较少,一般厚度较薄;体缺陷型包裹体由于难以形成因而数量很少。结合天然样品对比,线缺陷型次生包裹体是最常见的,也是分析中用到最多的包裹体类型。关键词:碳酸盐岩储层;人工合成烃类包裹体;捕获模式中图分类号:P59;P579文献标识码:AExperimentalStudyontheM
3、odesofHydrocarbon—bearingInclusionTrappedinCarbonateRockReservoirsCHEN,GEYun-fin(CollegeofGeo-resourcesandInformation,ChinaUniversityofPetroleum,Qingdao266555,China)Abstract:Underthesimulationfromtheactualreservoirtemperatureandpressureconditions,hydrocarbon
4、—bearinginclusionsweresynthesizedandthemodesofhydrocarbon—bearinginclusionsformingincarbonaterockreservoirswerestudied.Resultsfromsynthetichydrocarbon-bearinginclusionexperimentsshowthatthehydrocarbon-bearinginclusionscanbetrappedthroughhealingthecrystalline
5、imperfectionsunderreservoirbearinggasandoilcondition.Accordingtothetypesofcrystallineimperfectionsandthepetrographiccharacteristicsofinclusions,themodesofhydrocarbon—bearinginclusionstrappedcanbedividedintofourgroups,pointdefectmode,linedefectmode,facedefect
6、modeandspacedefectmode.Becausetheinclusionstrappedinpointdefectandthelinedefectmodescanbeeasilyhealedduringthegrowthofmineralcrystals,mostinclusionsformedinthesetwomodes.Inclusionstrappedinpointdefectmodearecommonlyinsmallsizeandnoteasytobeanalyzed.Theinclus
7、ions~appedinlinedefectusuallyhavedifferentvolumes.Thenumberofinclusions~appedinfacedefectmodeislessandusuallythinner.AndthespacedefectmodeiSdi伍culttoforminclusions.Comparedtothenaturalsamples,secondaryinclusionstrappedinlinedefectmodearethemostcommononesanda
8、lsothemostcommononesininclusionanalysis.Keywords:carbonaterockreservoir;synthetichydrocarbon-bearinginclusion;trapmode收稿日期:2009-08-29;修订日期:2010-02-02基金项目:国家自然科学基金资助项目(4o9o2o40);山东省自然科学基金资助项目(Y20
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