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- W4285264936 abstract "摘要: 继我国在神狐海域两次天然气水合物试采成功之后，近几年来在琼东南盆地的勘探证实了天然气水合物的存在，而且钻探表明其与浅层气具有复杂的共生关系.为揭示琼东南盆地深水区天然气水合物与浅层气共生体系成藏特征，结合岩心、测井及三维地震数据，阐明了天然气水合物与浅层气的空间分布特征，研究结果表明，天然气水合物主要赋存在海底以下200 m范围内的沙质沉积物中，且其形成过程与浅层气的垂向运移有关.对天然气水合物与浅层气共生体系成藏特征的深入分析表明，深部热成因气和浅部生物成因气是其重要的气体来源，第四系未固结沙层是良好的储层，且天然气水合物和浅层气共生体系的分布主要受深部气烟囱和断层的控制.浅层气藏为天然气水合物提供稳定的气源条件；第四系块体流沉积与含天然气水合物地层能有效地封堵浅层气的纵向运移，进一步促进浅层气的成藏.因此，天然气水合物的形成与浅层气的发育具有正反馈的相互作用关系，有利于形成更大规模的天然气水合物矿体和浅层气藏，具有良好的商业开发潜力. 关键词: 天然气水合物 / 浅层气 / 天然气水合物与浅层气共生体系 / 成藏模式 / 琼东南盆地 / 油气地质" @default.
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- W4285264936 date "2022-01-01" @default.
- W4285264936 modified "2023-09-26" @default.
- W4285264936 title "琼东南盆地天然气水合物与浅层气共生体系成藏特征" @default.
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- W4285264936 doi "https://doi.org/10.3799/dqkx.2022.094" @default.
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