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Pore structure of low-permeability coal and its deformation characteristics during the adsorption–desorption of CH4/N2 by Pengfei Ji; Haifei Lin; Xiangguo Kong; Shugang Li; Biao Hu; Pei Wang; Di He; Songrui Yang is a Engineering article available to read on EtoBox.
What is Pore structure of low-permeability coal and its deformation characteristics during the adsorption–desorption of CH4/N2 about?
## Abstract The pore structure of coal plays a key role in controlling the storage and migration of CH4/N2. The pore structure of coal is an important indicator to measure the gas extraction capability and the gas displacement effect of N2 injection. The deformation characteristic of coal during adsorption–desorption of CH4/N2 is an important factor affecting CH4 pumpability and N2 injectability. The pore structure characteristics of low-permeability coal were obtained by fluid intrusion method and photoelectric radiation technology. The multistage and connectivity of coal pores were analyzed. Subsequently, a simultaneous test experiment of CH4/N2 adsorption–desorption and coal deformation was carried out. The deformation characteristics of coal were clarified and a coal strain model was constructed. Finally, the applicability of low-permeability coal to N2 injection for CH4 displacement technology was investigated. The results show that the micropores and transition pores of coal samples are relatively developed. The pore morphology of coal is dominated by semi-open pores. The pore structure of coal is highly complex and heterogeneous. Transition pores, mesopores and macropores of
Who reads Pore structure of low-permeability coal and its deformation characteristics during the adsorption–desorption of CH4/N2?
It is typically read by researchers, students, and practitioners in Engineering.
- Author
- Pengfei Ji; Haifei Lin; Xiangguo Kong; Shugang Li; Biao Hu; Pei Wang; Di He; Songrui Yang
- Publisher
- Springer Science and Business Media LLC
- Published
- 2023
- Language
- EN
- Field
- Engineering (Physical Sciences)