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基于MATCHSTICK应变分析煤层渗透率变化

Keywords: MATCHSTICK,渗透率,应变,孔隙压力

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Abstract:

研究煤层的渗透率在煤层气开采的过程中随着孔隙内气体压力降低的变化规律.假设煤层气开采过程中煤层体积不变,研究在应力和煤基质收缩双重作用下,随着煤层内气体压力的降低,MATCHSTICK的应变变化情况,进而分析这种变化对渗透率的影响,并得出了渗透率的变化规律.通过对应变变化曲线与实验及现场生产中渗透率变化曲线的对比分析,验证了应用MATCHSTICK应变变化分析渗透率变化规律的合理性.

References

[1]  李祥春,郭勇义,吴世跃,等.煤体有效应力与膨胀应力之间关系的分析[J].辽宁工程技术大学学报,2007,26(8):535-537. Li Xiangchun, Guo Yongyi, Wu Shiyue, et al. Relation between effective stress and swelling stress of coal body[J]. Journal of Liaoning Technical University, 2007,26(8):535-537.
[2]  潘哲军,卢克·康奈尔.煤的膨胀和收缩在二氧化碳增产煤层甲烷过程中的影响[J].中国煤层气,2007,4(1):7-10. Pan Zhejun, Connell L. Effects of coal matrix shrinkage/swelling on enhanced CBM[J]. China Coal Bed Methane, 2007,4(1):7-10.
[3]  Massarotto P, Golding S D,Rudolph V. Constant volume CBM reservoirs: an important principle //Proceedings of the 2009 International Coalbed Methane Symposium. Tuscaloosa, Alabama, USA: , 2009:235-238.
[4]  Palmer I, Mansoori J. How permeability depends on stress and pore pressure in coalbeds: a new model //Proceedings of the SPE Reservoir Evaluation & Engineering. Denver, USA: , 1998:539-544.
[5]  Zimmerman R W. Compressibility of sandstones[M]. New York: Elsevier, 1991:23-25.
[6]  Harpalani S, Chen G. Influence of gas production induced volumetric strain on permeability of coal[J]. International Journal of Geotechnical and Geological Engineering, 1997,15(4):303-325.
[7]  Seidle J P, Huitt L G. Exponential measurement of coal matrix shrinkage due to gas desorption and implication for cleat permeability increases[J]. SPE Intl Mtg Petr Engr, 1995(11):575-579.

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