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本文根据现代数值模拟技术的发展,提出用数值模拟方法,采用双重孔隙介质模型来研究裂缝性气田,并考虑气体的流动特征,气体的真实性和井壁附近的非达西流动效应等。采取拟合的办法来修改地层参数,进行动态预测,为裂缝性气田提供了实用的设计计算方法。本文以相国寺气田石炭系气藏为例,阐明方法的适用性及可靠性。此外,文中还对提供的方法所得解的收敛性及稳定性作了必要的理论探讨及说明。
Based on the development of modern numerical simulation technology, this paper presents a numerical simulation method and a dual porosity medium model to study the fractured gas field. The gas flow characteristics, gas authenticity and non-Darcy flow effect near the borehole wall are also considered. Fitting methods to modify the formation parameters, dynamic prediction, fracturing gas field provides a practical design and calculation methods. This paper takes the Carboniferous gas reservoirs in the Xiangguosi Gas Field as an example to illustrate the applicability and reliability of the method. In addition, the paper also makes necessary theoretical discussion and explanation on the convergence and stability of the solutions provided.