Control of ash yield on vertical pore structure development and its impact on coalbed methane adsorption in the deep coal seams of the Ordos Basin
Abstract
The vertical heterogeneity of the pore structure in deep coal seams with varying ash yields is a key control for coalbed methane storage and producibility; however, its specific impact on gas adsorption is not clearly defined. The focus of this study is the No.8 coal seam of the Carboniferous Benxi Formation in the Central-Eastern Ordos Basin. By integrating microscopic identification, proximate analysis, gas adsorption (CO 2 , N 2 , and CH 4 ), and the multifractal theory, we quantitatively characterized the nanopore structure (micropores
Fields of Study & Subjects
Coal Properties and Utilization
Mining and Gasification Technologies
Geomechanics and Mining Engineering
Publication details
- Journal / source
- Natural Gas Industry B
- Publisher
- Elsevier BV
- Volume
- 13
- Issue
- 1
- Pages
- 9–29
- Publication date
- 1 February 2026
- Language
- EN