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鄂尔多斯盆地上古生界储层流体包裹体特征及其地质意义
冯乔 马硕鹏 樊爱萍
摘 要:鄂尔多斯盆地上古生界储层流体包裹体按成因可以分为继承性(非成岩)和非继承性(成岩)包裹体两类.后者又可根据流体成分分为盐水包裹体、C02包裹体和烃类包裹体3亚类,每类均具有特定的地质意义.储层中发育两种颜色不同的荧光.流体包裹体中的液态烃类发蓝色、蓝灰色荧光;胶结物中的烃类发浅黄色、黄绿色荧光.前者代表了充注时的石油特征;后者为石油被破坏后的结果.液态烃类包裹体的PVT模拟计算表明,石油是在相对较高的温度(120℃)和较高的流体压力(38.49 MPa)环境下充注的,至现今储层温度、压力均发生了显著下降,从而导致储层油气性质发生了明显改变.
关键词:流体包裹体类型;荧光特征;烃类充注;鄂尔多斯盆地
分类号:TE112.2 文献标识码:A
文章编号:0253-9985(2006)01-0027-06
Characteristics of fluid inclusions in Upper Paleozoic reservoirs in Ordos basin and their geological significance
Feng Qiao Ma Shuopeng Fan Aiping
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基金项目:国家重点基础研究发展规划(973)项目(2003CB214603)
作者简介:冯乔(1963-),男,教授,油气地质与油气成藏
作者单位:冯乔(山东科技大学,地球信息与工程学院,山东,青岛,266510)
马硕鹏(中国石油,勘探开发研究院,廊坊分院,河北,廊坊,065007)
樊爱萍(西北大学,地质学系,陕西,西安,710069)
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[1]耿安松,冯乔,熊永强,等.川陕气源与储层地球化学研究(十五攻关报告).中科院广州地球化学研究所,2002
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