| 江汉盆地海相地层油气勘探前景的包裹体证据 |
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| 引用本文：覃建雄,刘岫峰,李余生,黄克难,柯小平.1999.江汉盆地海相地层油气勘探前景的包裹体证据[J].地球学报,20(1):55-62. |
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| 中文摘要:江汉盆地海相地层矿物流体包裹体，按成岩序列和共生组合关系可划分为５期和５种组合类型，其中２～５种组合类型（第３～６期）与油气的生成、运移和聚集关系密切。相应的均一温度和含盐度分别在１０５～１８０℃和８～２０ω（ＮａＣｌｅｑ）％之间，有机包裹体丰度６７．３％，平均总烃质量分数０．２９５×１０－６，平均ＣＨ４／ＣＯ２比值１．３２。包裹体诸参数，结合其他有机地球化学资料综合证实，区内烃源岩母质类型好，有机质丰度较高，油气演化处于高成熟阶段。石油和天然气大量生成、运移和聚集分别发生在印支－燕山早期和燕山晚期－喜马拉雅期，并与圈闭的形成相配套，油气藏保存条件较佳，油气勘探前景较好。 |
| 中文关键词:有机包裹体 油气勘探 海相地层 江汉盆地 |
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| Petroteum Prospects for Marine Strata in the Jianghan Basin——Evidence from Fluid Inclusions |
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| Abstract:Fluid inclusions of marine strata in the Jianghan ba1sin can be classified,according to diagenetic succession and paragenesis,into 6 stages and related 5 association types,of which the 2nd to 5th association types,i.e.from the 3th to 6th stages,with homogenization temperatures of 105～180℃,salinities of 8～20ω (NaCl) eq %, an organic inclusion abundance of 67.3%,and average total hydrocarbon content of 0.29×10 -6 and a ratio of CH 4/CO 2 of 1.32,are closely related to the generation, migration and accummulation of petroleum. According to the various parameters of the inclusions combined with other organic geochemical data,it has been demonstrated that the petroleum prospects of the Permian and Trassic marine strata in the Jianghan basin is promising because of its:①good type of kerogen,②high abundance of organic matter,③high maturity of hydrocarbon evolution,④occurrence and migration and accummulation of oil and gas synchronous with the formation of traps,and ⑤ well preserved oil gas reservoirs. |
| keywords:organic inclusions oil gas exploration petroleum prospects marine strata Jianghan basin |
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