Calculation methods on methane adsorption phase density in coal: A critical review and new insights

X Cheng, Y Cheng, C Wang, B Hu, J Wang - Chemical Engineering …, 2023 - Elsevier
Adsorption phase density is a bridge to accurately reflect the absolute adsorption amount of
adsorption characteristics. Although the calculation method of adsorption phase density has …

Review on Pore Structure Characterization and Microscopic Flow Mechanism of CO2 Flooding in Porous Media

Y Tang, C Hou, Y He, Y Wang, Y Chen… - Energy …, 2021 - Wiley Online Library
Understanding of pore structure and microscopic flow mechanism at pore‐scale is
significant for enhancing oil recovery by carbon dioxide (CO2) flooding. Herein, the pore …

Full-scale pore structure characterization of different rank coals and its impact on gas adsorption capacity: A theoretical model and experimental study

Z Li, T Ren, X Li, Y Cheng, X He, J Lin, M Qiao, X Yang - Energy, 2023 - Elsevier
Microscopic pores significantly impact the coalbed methane (CBM) storage, hence gas
energy recovery and gas-related problems mitigation. However, the quantitative relationship …

CO2 and CH4 adsorption on different rank coals: A thermodynamics study of surface potential, Gibbs free energy change and entropy loss

X Du, Y Cheng, Z Liu, H Yin, T Wu, L Huo, C Shu - Fuel, 2021 - Elsevier
In this paper, the pore structures of three different rank coals sampled from China
(anthracite, bituminous coal and lignite) were characterized by CO 2 and N 2 adsorption …

Characteristics of methane adsorption/desorption heat and energy with respect to coal rank

J Ye, S Tao, S Zhao, S Li, S Chen, Y Cui - Journal of Natural Gas Science …, 2022 - Elsevier
Abstract Changes of heat and energy during methane adsorption and desorption are
essential factors affecting the production of coalbed methane. To characterize adsorption …

Material composition, pore structure and adsorption capacity of low-rank coals around the first coalification jump: A case of eastern Junggar Basin, China

S Tao, S Chen, D Tang, X Zhao, H Xu, S Li - Fuel, 2018 - Elsevier
The first coalification jump (FCJ) has a significant impact on low-rank coal reservoir
heterogeneity, and is of great importance for coalbed methane (CBM) development. Here, a …

Quantitative study on coal and shale pore structure and surface roughness based on atomic force microscopy and image processing

S Zhao, Y Li, Y Wang, Z Ma, X Huang - Fuel, 2019 - Elsevier
The heterogeneity and micropores distribution of coal and shale reservoirs make them
difficult to be quantitatively characterized by quick and economical approaches. A new …

Molecular simulation of gas adsorption characteristics and diffusion in micropores of lignite

D Gao, L Hong, J Wang, D Zheng - Fuel, 2020 - Elsevier
In order to study the adsorption characteristics of single component, binary and ternary
mixed gases in lignite, the microscopic processes of CO 2 and N 2 injection for CH 4 …

Coal seam porosity and fracture heterogeneity of marcolithotypes in the Fanzhuang Block, southern Qinshui Basin, China

S Tao, Z Pan, S Chen, S Tang - Journal of Natural Gas Science and …, 2019 - Elsevier
Marcolithotypes play a significant role in coal seam porosity and fracture heterogeneity. The
optical microscopy, CO 2 and N 2 adsorption, and X-ray CT were used for reconstructing the …

Evaluation of pore properties in coal through compressibility correction based on mercury intrusion porosimetry: A practical approach

Y Li, D Song, S Liu, X Ji, H Hao - Fuel, 2021 - Elsevier
As a commonly used method to evaluate the pore structures of coal, uncorrected MIP data
may cause the results to be highly overestimated. In this study, a series of experiments were …