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含气流体运移与天然气水合物成藏
其他题名Relationship Between Gas-Bearing Fluids Migration and Accumulation of Natural Gas Hydrate
张金华1,2; 苏明3; 魏伟2; 吴能友4; 刘杰3; 杨睿3; 沙志彬5; 丛晓荣3
2017-03
发表期刊地质科技情报
ISSN1000-7849
卷号36期号:2页码:176-185
摘要摘要:含气流体运移是影n自天然气水合物成藏的重要因素,包括流体运移方式、运移通道类型、运移效能等。基于全球典型海域天然气水合物勘探研究结果,围绕含气流体运移这一重要因素,系统回顾和总结了底辟构造、断层及裂隙和渗透层对天然气水合物形成与分布的影n自。研究结果表明,以对流形式的运移是流体有效的运移方式,有利于烃类气体聚集及水合物成藏。已知水合物富集区内含气流体运移通道都不以单一形式存在,而是多种运移通道共同作用,呈复合型运移通道形式。在通道类型上,底辟构造、断层及裂隙、渗透层等都属于聚集型高通量流体运移通道类型,但这种通道类型与高饱和度、富集型天然气水合物藏并不存在一一对应的关系,其还与运移效能密切相关。因此有必要开展重点区域的流体运移的分析,揭示流体运移通道的展布以及运移规模,以达到更为准确预测和描i术永合物藏的目白{7.并为水合物钻探站位部署槔供有力依榧.
其他摘要Gas-bearing fluids migration, mainly including fluid migration pattern, migration pathway, and migration efficiency, is one of the important factors affecting natural gas hydrate accumulation. Based on the progress of global marine gas hydrate explorations and researches, focusing on gas-bearing fluids mi- gration, we mainly summarize several migration pathways, such as diapir structure, fault/fracture and permeable layer to understand their effect or impact on the formation and distribution of gas hydrate. Re- search results show that fluid convection is an effective migration pattern, which is beneficial for the hy- drocarbon gas accumulation and gas hydrate formation and concentration. Almost all known-natural gas hydrate occurrence zones develop multi-type migration pathways, not single-type pathway, and individual hydrate occurrence is commonly affected by various gas-bearing fluids migration pathways. In terms of pathway types, diapir structures, fault/fractures and permeable layers all belong to focused high-flux mi- gration pathway, conductive for hydrate formation and accumulation. However this focused high-flux mi- gration pathway type does not mean the existence of high saturation and enrichment of gas hydrate. The focused high-flux migration pathway does not have a one-to-one correlation with high saturation and en- richment of gas hydrate. As high saturation and enrichment of gas hydrate is still closely related to migra- tion efficiency. Therefore, it is necessary to analyze the gas-bearing fluids migration in key hydrate occur- rence areas, and then reveal the distribution of fluid migration pathways and the size of migration flux. With these analyses, the predictions and descriptions of hydrates would be more accurate, and they could also be reasons for site selections of marine gas hydrates.
关键词天然气水合物 含气流体运移 运移通道 断层及裂隙 natural gas hydrate gas-bearing fluids migration migration pathway fault/fracture
DOI10.19509/j.cnki.dzkq.2017.0223
语种中文
引用统计
文献类型期刊论文
条目标识符http://ir.giec.ac.cn/handle/344007/16580
专题中国科学院广州能源研究所
通讯作者苏明
作者单位1.中国地质大学(北京)海洋学院,北京100083;
2.中国石油勘探开发研究院廊坊分院,河北廊坊065007;
3.中国科学院广州能源研究所,广州510640;
4.青岛海洋地质研究所,山东青岛266071;
5.广州海洋地质调查局,广州510760
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GB/T 7714
张金华,苏明,魏伟,等. 含气流体运移与天然气水合物成藏[J]. 地质科技情报,2017,36(2):176-185.
APA 张金华.,苏明.,魏伟.,吴能友.,刘杰.,...&丛晓荣.(2017).含气流体运移与天然气水合物成藏.地质科技情报,36(2),176-185.
MLA 张金华,et al."含气流体运移与天然气水合物成藏".地质科技情报 36.2(2017):176-185.
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