%0 Journal Article
%T Pressure Transient Analysis of Coal Seams Based on the Fractal Dimension of Fractures
基于裂隙分形维数的煤储层压力动态分析
%A ZHANG Xian-min
%A TONG Deng-ke
%A HU Ai-mei
%A
张先敏
%A 同登科
%A 胡爱梅
%J 天然气地球科学
%D 2008
%I
%X Conventional flow mathematical models of coalbed methane are all based on Euclidean geometry. In this paper, new mathematical models based on the fractal theory are established by introducing fractal parameters to describe the fractal characteristics of the fractures in coal seams. The new models consider not only the double porosity and absorption of coal seams but also the deformation of medium. The numerical solutions are obtained by using the Newton method. The change rules of pressure are discussed when the parameters of models change. The plots of typical pressure curves are given, and the results provide theoretical basis and new well test methods for the exploitation of coalbed methane.
%K 煤层气
%K 分形维数
%K 非平衡吸附
%K Newton法
%K 裂隙
%K 分形维数
%K 储层压力
%K 动态分析
%K Fractures
%K Fractal
%K Dimension
%K Based
%K Coal
%K Transient
%K Analysis
%K 试井模型
%K 理论
%K 开采
%K 压力曲线
%K 绘制
%K 敏感性
%K 模型参数
%K 无因次
%K 数值解
%K 气体单相流动
%K 稳态条件
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=E8CFCA71B77A2FF3&jid=ACDC74B90F609E2435847898490F3647&aid=AAC3A5486BFB7F1531AE950277EAD48A&yid=67289AFF6305E306&vid=2A8D03AD8076A2E3&iid=38B194292C032A66&sid=DDEED1BDDBFAA8A7&eid=08076B8B3CC96095&journal_id=1672-1926&journal_name=天然气地球科学&referenced_num=0&reference_num=9