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Research on Numerical Simulation of Dynamic Pressure for Stress Sensibility Coal Seam

机译：应力敏感煤层动态压力数值模拟研究

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摘要

Based on the orthotropic physical properties of coal cleats, the fluid-solid coupling model for stress sensibility coal seams is established. The equations of the coupling model are solved by using the finite element method. The history matching for JS-3 well in Ordos basin is carried on by using the coupling model. The comparison between calculated results based on the coupling model and the measured values indicates their good agreement, which verifies the accuracy and rationality of the model. The effect of the permeability orthotropic coefficient of coal cleats on the pressure distribution in coal seams is analyzed. The results show that the pressure along the butt cleats direction increases with permeability orthotropic coefficient increasing; The pressure along the face cleats decreases with permeability orthotropic coefficient increasing between 0m～30m and 170m～200m, whereas both increases from 30m to 170m.
机译：基于煤矸石的正交物理性质，建立了应力敏感性煤层的流体固耦合模型。 通过使用有限元方法来解决耦合模型的等式。 通过使用耦合模型继续对ORDOS盆地的JS-3井的历史匹配。 基于耦合模型的计算结果与测量值之间的比较表明了它们的良好一致性，验证了模型的准确性和合理性。 分析了分析了煤层渗透性正交系数对煤层压力分布的影响。 结果表明，沿着对接夹板方向的压力随着渗透性正向系数的增加而增加; 沿着面螺旋的压力随着渗透性正向系数的降低，介于0m〜30m至170m〜200m之间，而两者均从30m至170m增加。

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