收稿日期: 2006-11-08
修回日期: 2007-01-31
网络出版日期: 2008-06-20
基金资助
国家重点基础研究发展计划“973”项目(编号:2001CB209103)资助.
HYDRODYNAMICAL SCHEME OF GAS MIGRATION AND ACCUMULATION IN OVE RPRESSURE SETTING
Received date: 2006-11-08
Revised date: 2007-01-31
Online published: 2008-06-20
孙明亮,柳广弟,李 剑 . 超压体系内天然气成藏的源储能量配置[J]. 天然气地球科学, 2007 , 18(2) : 215 -218 . DOI: 10.11764/j.issn.1672-1926.2007.02.215
Three types of hydro-dynamical scheme are presented, on the basis of analyzing the distribution and quantitative relation of excess pressure between source bed and reservoir in overpressure settings. They are invalid dynamical type, low excess-pressure-difference type and strong excess-pressure-difference type. The later two of those three dynamical types are the essential conditions for theaccumulation of natural gas pools. The hydro-dynamical criterion of natural gas accumulation is found. 12×103Pa/m is the lowest excess pressure grads between source bed and reservoir when gas pools accumulate efficiently, and more than 18×103 Pa/m is the most favorable conditions. It indicates that efficient gas pool accumulation would take place when excess pressure grads are beyond certainly dynamical limitation, otherwise it never would happen.
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