| 天然气水合物与油气成藏的相关性研究 |
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| 引用本文： | 信石印.天然气水合物与油气成藏的相关性研究[J].地质与资源,2018,27(2):204-208. |
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| 作者姓名： | 信石印 |
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| 作者单位： | 中海油研究总院, 北京 100028 |
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| 基金项目： | 国家"十二五"重大专项"亚太地区油气资源评价及未来战略发展方向"（编号2011ZX05028-006） |
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| 摘 要： | 对天然气水合物的形成机理与分布特征、现今和地质历史时期天然气水合物的识别标志及其与油气成藏的相关性等方面的主要研究进展与实例的分析显示，天然气水合物在主动陆缘俯冲带增生楔和被动陆缘的陆隆台地断褶区非常发育，以似海底反射、特殊自生碳酸盐岩矿物、非搬运成因的局部沉积破坏或杂乱堆积、大型圆形凹陷和巨大规模的海底滑坡为识别标志，与油气成藏具有共生组合关系.深部气藏渗漏或油藏裂解形成的大量天然气为浅层外源成藏天然气水合物提供气源；古天然气水合物的形成有利于页岩气的保存和成藏；古天然气水合物分解可为浅层气藏提供气源.
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| 关 键 词： | 天然气水合物 古天然气水合物 识别标志 油气成藏 相关性 |
| 收稿时间： | 2017-05-02 |
CORRELATION STUDY ON NATURAL GAS HYDRATE AND HYDROCARBON ACCUMULATION |
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| XIN Shi-Yin.CORRELATION STUDY ON NATURAL GAS HYDRATE AND HYDROCARBON ACCUMULATION[J].Geology and Resources,2018,27(2):204-208. |
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| Authors: | XIN Shi-Yin |
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| Institution: | China National Offshore Oil Corporation (CNOOC), Beijing 100028, China |
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| Abstract: | Study on the forming mechanism and distribution of natural gas hydrate (NGH), its identification marks in present and geological history, and correlation with hydrocarbon accumulation indicates that NGH is well developed in accretionary wedges of active epicontinental subduction zones and fault-fold belts of passive continental margin. The identification marks include bottom simulating reflector (BSR), special authigenic carbonate rock minerals, local deposition destruction or mass transport complex (MTC) without transportation, large circular sag and huge submarine slide. The coexisting relations between NGH and hydrocarbon accumulation are shown in the following types:The exogenous NGH is sourced by leakage or cracking of deep reservoirs. Paleo-NGH is favorable for the preservation and accumulation of shale gas. The decomposition of paleo-NGH can provide gas sources for shallow reservoir. |
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| Keywords: | NGH paleo-NGH identification mark hydrocarbon accumulation correlation |
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