| 天然气的扩散模型及扩散量的计算方法 |
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| 引用本文： | 房德权,曾凡刚.天然气的扩散模型及扩散量的计算方法[J].沉积学报,1998,16(3):72-74. |
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| 作者姓名： | 房德权 曾凡刚 |
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| 作者单位： | 1.中国石油天然气总公司石油勘探开发科学研究院地质所 北京 100083; |
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| 摘 要： | 盖层的存在是天然气成藏和保存的必要条件之一，而浓度封闭又是盖层的一种重要的封闭机理。在前人工作的基础上，研究了浓度封闭的机理，进一步系统建立了天然气扩散的地质和数学模型，并给出了模型的初始化条件，对天然气扩散量的计算方法作了讨论。
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| 关 键 词： | 天然气 扩散 模型 盖层 |
| 收稿时间： | 1997-10-21 |
The Diffusion Model and Computation Method of Diffusion Quantification for Natural Gas |
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| Fang Dequen,\ Song Yan,\ Zeng Fangang,\ Wang Guanyu.The Diffusion Model and Computation Method of Diffusion Quantification for Natural Gas[J].Acta Sedimentologica Sinica,1998,16(3):72-74. |
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| Authors: | Fang Dequen \ Song Yan \ Zeng Fangang \ Wang Guanyu |
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| Institution: | 1.Research Institute of Petroleum Exploration and Development, CNPC, Beijing 100083;2.Geology Department of Peking University. Beijing 100871 |
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| Abstract: | Cap rock is the necessary condition of the gas reservoir preservation,and hydrocarbon concentration confining is one important confining mechanism.The geological and mathematical model of natural gas diffusion has been set up systematically.The natural gas diffusion is mainly through the water,so the solubility of the natural gas in water can be regarded as the initial gas concentration in the cap rock.The solubility of the natural gas can be calculate by the determination of the temperature,pressure and salinity of the stratum.The source rock is usually of relatively larger solubility,so it is the best cap rock. |
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| Keywords: | natual gas\ diffusion\ model \ cap rock |
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