| 活动热流体对有机质热演化和油气生成作用的强化 |
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| 引用本文： | 郝芳,张启明.活动热流体对有机质热演化和油气生成作用的强化[J].地球科学,1996,21(1):68-72. |
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| 作者姓名： | 郝芳 张启明 |
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| 作者单位： | 资源学院，南海西部石油公司勘探开发研究院 |
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| 基金项目： | “八五”国家重点科技攻关项目 |
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| 摘 要： | 通过地质，地球化学的综合分析和动态模拟表明，在莺歌海，琼东南盆地中，活动热流体有机质热演化和油气生成具有重要的强化作用，在油气聚集区，活动热流体的强化作用表现为储层段的高地温，低地温梯度及相邻层位有机质成熟度的突变性增高，从成因上可分为深源流体侧向输导增温型和深源流体垂向输导增温型，在油气运移路径附近，活动热流体的强化作用表现为有机质成熟度的明显倒置，活动热流体的强化作用使在单一传导背景下不可能成
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| 关 键 词： | 活动热流体 热演化模拟 油气生成 有机质 |
ENHANCEMENT OF ORGANIC MATURATION AND PETROLEUM GENERATION BY HYDROTHERMAL FLUIDS |
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| Hao Fang,Sun Yongchuan.ENHANCEMENT OF ORGANIC MATURATION AND PETROLEUM GENERATION BY HYDROTHERMAL FLUIDS[J].Earth Science-Journal of China University of Geosciences,1996,21(1):68-72. |
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| Authors: | Hao Fang Sun Yongchuan |
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| Abstract: | Combined geological and geochemical analysis and maturity modeling indicated that hydrothermal fluids have significantly enhanced organic-matter maturation and petroleum generaton in the Yinggehai and Qiongdongnan Basins,offshore South China Sea.In oil/gas accumulation regions;the effect of hydrothermal fluids was reflected by highh temperatures but abnormally low in thermal gradients in the reservoir sections and abrupt elevation of organic maturities in the nearby strata,and two genetic types:tempreature increased by lateral movement,and deeply-sourced fluids and temperature increased by vertical movement with deeply sourced fluids possible to be divided.Near the pathway of fluid migration,the effect was indicated by reversed organic maturity profile near major nuconformities.The enhencement of organic maturation by hydrothermal fluids lead strata that would be immature in conductivity setting to go beneath the threshold depth for petroleum generation, enlarging the interval and volume of effective source rocks.Therefore,studies of the effect of hydrothermal fluids on organic maturation are of great importance in petroleum resource evaluation. |
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| Keywords: | hydrothermal fluids thermal evolution modeling petroleum generation Yinggehai and Qiongdongnan Basins |
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