Coal Structure and Its Implications for Coalbed Methane Exploitation: A Review

Published on Jan 7, 2021in Energy & Fuels3.421
· DOI :10.1021/ACS.ENERGYFUELS.0C03309
Lijing Li2
Estimated H-index: 2
(China University of Geosciences),
Dameng Liu37
Estimated H-index: 37
(China University of Geosciences)
+ 2 AuthorsQifeng Jia3
Estimated H-index: 3
(China University of Geosciences)
Source
Abstract
Coal structure refers to the internal structural characteristics of coals including the degree of macroscopic and microscopic deformation, pore structure, and mechanical properties after various ge...
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Petrophysics of coals directly affects the development of coalbed methane (CBM). Based on the analysis of the representative academic works at home and abroad, the recent progress on petrophysics characteristics was reviewed from the aspects of the scale-span pore-fracture structure, permeability, reservoir heterogeneity, and its controlling factors. The results showed that the characterization of pore-fracture has gone through three stages: qualitative and semiquantitative evaluation of pore-fr...
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Abstract Exploitation of coalbed methane (CBM) has dual advantages of not only providing alternative clean-energy but also effectively reducing the proneness for gas outbursts. CBM reservoir properties for tectonically deformed coals (TDCs) differ significantly in comparison to neighboring primary coals, largely attributing to their pore-fracture transitions. Considerable efforts have been invested to capture the structural properties of wide scales in TDCs over the last 54 years. Here, the pore...
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Abstract Visualizing and quantifying the pore structure at the nano-micro scale is critical for understanding the micro fluid transport and enrichment in coalbed methane (CBM) reservoirs. In this work, the detailed micro-nano scale pore parameters such as pore counts, pore area, pore volume and pore size distribution can be acquired by the focused ion beam-scanning electron microscopy (FIB-SEM) and X-ray computed micro-tomography (X-ray μ-CT) techniques. Meanwhile, the pore network model (PNM) w...
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