Determination of methane sorption capacity using microstructural analysis in coal of Jharia Coalfield, India

Kumar, Harinandan; Mishra, Manoj Kumar; Mishra, Sudhir; Singh, M. Muralidhar; Srivastava, D. K.

doi:10.1007/s12517-021-07051-0

Cited by 6 publications

(1 citation statement)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The adsorption pores have a large specific surface area, which mainly affects the adsorption, desorption and diffusion of coalbed methane (Tao et al, 2019). It has been shown that the different surface morphologies in the pores are also important factors in determining the methane adsorption capacity (Kumar et al, 2021). Studies have shown that methane adsorption is proportional to porosity (Kumar et al, 2019a; Kumar et al, 2019b).…”

Section: Introductionmentioning

confidence: 99%

Pore characteristics and its heterogeneity of lignite reservoir in the Erlian Basin of Inner Mongolia, China

Jiang

Xin

et al. 2022

Energy Exploration & Exploitation

View full text Add to dashboard Cite

The pore characteristics of coal reservoirs play a very important role in the migration of coalbed methane reservoirs, and its heterogeneity has been studied by a large number of scholars. However, there are few studies on lignite reservoirs. In this paper, three sets of lignite reservoirs in the Jiergalangtu depression are taken as the research object. The scanning electron microscope (SEM) images are converted from time-domain signals to frequency-domain signals through Fourier transformation, which quantitatively characterizes the heterogeneity of coal reservoirs. The variance of the value indicates that the three sets of coal seams NO.4Var<NO.5Var<NO.6Var. Through nitrogen adsorption experiment and fractal analysis, the pore continuity, surface roughness, pore structure, pore type and other aspects are studied. The lignite in the study area has high pore surface roughness and complex pore structure. Affected by various geological factors such as material composition, coal-forming environment, degree of evolution and other geological factors, lignite reservoirs in different layers and different mining areas show obvious heterogeneity.

show abstract