摘要
通过研究气体与应力对煤微观孔隙的影响,揭示了吸附性气体与非吸附性气体对煤孔隙结构的差异影响,以及应力对煤微观结构的主要和次要影响因素。实验表明:非吸附性气体可以扩大煤体内部的孔隙孔径,增大裂隙开口度,从而提高煤的渗透性。而吸附性气体会破坏煤孔隙结构,使孔裂隙结构更加复杂,从而增强煤的吸附能力。研究结果可为非常规油气资源的评价与开发提供微观角度的参考。
By studying the effects of gas and stress on the micro pores of coal,the differences in the effects of adsorbed and non adsorbed gases on the pore structure of coal were revealed,as well as the main and secondary factors affecting the microstructure of coal under stress.Experiments have shown that non adsorbent gases can expand the pore size inside coal,increase the opening degree of cracks,and thus improve the permeability of coal.Adsorbable gases can damage the pore structure of coal,making the pore and fracture structures more complex,thereby enhancing the adsorption capacity of coal.The research results can provide a micro perspective reference for the evaluation and development of unconventional oil and gas resources.
作者
牛文星
邵晨光
马彦伟
Niu Wenxing;Shao Chenguang;Ma Yanwei(Shanxi Research Institute for Clean Energy,Tsinghua University,Taiyuan Shanxi 030032,China;Shanxi Jinzhong Institute of Technology,Jinzhong Shanxi 030621,China)
出处
《山西冶金》
CAS
2024年第2期123-124,161,共3页
Shanxi Metallurgy
