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天然气地球科学

• 非常规天然气 • 上一篇    下一篇

南海北部琼东南盆地天然气水合物成藏数值模拟

苏丕波,乔少华，付少英，梁金强，苏明，杨睿，吴能友   

  1. 1.广州海洋地质调查局，广东 广州 510760;2.国土资源部海底矿产资源重点实验室，广东 广州 510075; 3.中国科学院广州能源研究所，广东 广州 510640; 4.中国科学院广州天然气水合物研究中心，广东 广州 510640; 5.中国科学院大学，北京100049
  • 收稿日期:2013-11-04 修回日期:2014-03-19 出版日期:2014-07-10 发布日期:2014-07-10
  • 作者简介:苏丕波(1981-)，男，湖北潜江人,工程师,博士,主要从事天然气水合物气源条件与成藏系统模拟等方面研究.
  • 基金资助:

    国土资源部矿产资源重点实验室开发基金项目（编号：KLMMR-2013-A-23）;国家自然科学基金项目（编号：41376076）;国家“863”计划项目（编号：2013AA0925010202）联合资助.

Numerical Simulation of Gas Hydrate Accumulation in Qiongdongnan Basin, Northern South China Sea

SU Pi-bo, QIAO Shao-hua, FU Shao-ying, LIANG Jin-qiang, SU Ming, YANG Rui, WU Neng-you   

  1. 1.Guangzhou Marine Geological Survey,Guangzhou 510760,China; 2.Key Laboratory of Marine Mineral Resources,Ministry of Land and Resources，Guangzhou 510075,China; 3.Guangzhou Institute of Energy Conversion,CAS,Guangzhou 510640,China; 4.Guangzhou Center for Gas Hydrate Research,CAS,Guangzhou 510640,China; 5.University of Chinese Academy of Sciences,Beijing 100049,China
  • Received:2013-11-04 Revised:2014-03-19 Online:2014-07-10 Published:2014-07-10

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摘要：

为查明南海北部琼东南盆地生物成因和热成因天然气的资源潜力及其对天然气水合物成藏的贡献，根据琼东南海域天然气水合物调查区典型二维地震剖面，构建了该区的地质模型，并结合区域内岩性、地热和地球化学等参数对其进行了天然气水合物成藏的数值模拟。结果表明：琼东南盆地具备天然气水合物成藏的稳定域范围，稳定域厚度介于220～340m之间;生物气和热解气的资源潜力巨大，满足天然气水合物形成的气源条件;运移条件优越，有利于天然气水合物的聚集成藏。最后根据气体来源及其运移特征讨论了该区域天然气水合物成藏的地质模式。

关键词: 天然气水合物, 琼东南盆地, 成藏模式, 生物气, 热解气

Abstract:

To further investigate the resource potential of biogenic and thermogenic gases and its contribution to natural gas hydrate in the Qiongdongnan Basin,two typical sections in Qiongdongnan gas hydrate exploration area were chosen to build the geological model.In combination with physical,thermal and geochemical data,the process of gas hydrate accumulation was simulated by basin modeling computer programs.The results show that there is gas hydrate stability zone with thickness of 220-340m in the Qiongdongnan Basin; biogenic gas and thermogenic gas are abundant,which could be the resource for hydrate accumulation; migration pathways of gas in the basin are favorable for hydrate formation.Finally,the hydrate accumulation geological models in the basin were discussed according to gas resource and its migration characteristics.

Key words: Gas hydrate, Qiongdongnan Basin, Accumulation model, Biogenic gas, Thermogenic gas

中图分类号: 

  • TE122.3

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