地应力对煤储层渗透性影响的机理研究

Mechanism research about effect of in-situ stress on coal bed permeability

利用裂缝储层孔隙结构模型理论和弹性力学原理,从微观角度对地应力影响煤储层渗透性的机理进行了研究,得出了煤储层中地应力与渗透率的相关关系,其结果与从宏观角度统计分析的结果相吻合,进而在一定条件下揭示了地应力对煤储层渗透性影响的机理。

In the light of model about pore structure in crack reservoir and elas tic dynamic principle,the study of mechanism about effect of in-situ stress on coalbed permeability,and the relationship between in-situ stress and coalbed permeability is derived. The conclusion of theoretical derivation is accordance with macro-statistic analysis results,and mechanism about effect of in-situ s tress on coalbed permeability is discovered.