低渗透非达西气体渗流模型及计算方法


2006年 13卷 第05期
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Model and Calculation Method for Studying Low -Permeability Non- Darcy Gas Flow
李 进1 吴小庆
( 1. 西南油气田分公司勘探开发研究院, 四川成都610000; 2. 西南石油大学, 四川成都610500 )
 Southwest Petroleum University, Chengdu
610500, China
在一系列假定条件下, 建立了一个低渗透非达西气体渗流的非线性移动边界偏
微分方程数学模型, 在理论上论证模型解的存在唯一性基础上, 用对数网格对求解区域进行剖
分, 建立显式预测隐式校正格式, 进而讨论模型的算法。此模型和算法具有一定的应用价值。
To establish the non linear partia l d ifferentia l equa tions􀀁
m ode l for gas perco lation flow through po rous media o f low
perm eab ility and on the bas is o f theory reason ing for ex istence
and un iqueness o f them ode ls’ so lution, th is paperm akes use
o f loga rithm gr idd ing to partition the area of solutions,
u lterior ly to estab lish d iscre te form at of them ode l and to so lv e
it. The mode l and the so lu tion have som e app licab le va lues.
低渗透气藏; 偏微分方程; 解的存在唯一性; 算法;
Low perm eab ility g as reservo ir, Nonlinear
partial differential equation, Ex istence and uniqueness of the
m ode,l So lution;