Multiscale nondestructive characterization of coal microscopic physical structure can provide important information for coal conversion and coal-bed methane extraction. In this study, the physical structure of a coal sample was investigated by synchrotron-based multiple-energy X-ray CT at three beam energies and two different spatial resolutions. A data-constrained modeling (DCM) approach was u...

Aiming at the problems such as low CBM utilization rate caused by concentration with methane content less than 8% extracted from a small coal mine in Hancheng mining area, Shaanxi Province, and serious environmental pollution coal-fired hot blast stove for heating, heat storage oxidation heating technology of ultra-low gas was studied combining field investigation balance calculation, regenerat...

The theory of coalbed methane distribution controlled by tectonism is a hot issue in the field geofluid-geotectonic interaction research. Taking geological structure scale range 1302 working face Guojiahe wellfield Yonglong mining area as background, this paper focuses on basic research problem influence control coal reservoir gas content and uses THM coupling model to analyze change characteri...

Pores in coal are not only the main space for coalbed methane (CBM) occurrence but also to be opened during CBM recovery. Therefore, analysis of impact hydraulic fracturing on pores, especially change adsorption pores before and after fracturing, is great significance evaluation effect Hydraulic experiments low-field nuclear magnetic resonance technology were used analyze changes T 2 curve, por...

Over significant areas of the UK and western Europe, anthropogenic alteration of the subsurface by mining of coal has occurred beneath highly populated areas which are now considering a multiplicity of 'low carbon' unconventional energy resources including shale gas and oil, coal bed methane, geothermal energy and energy storage. To enable decision making on the 3D planning, licensing and extra...

In the first decade of the 21st century, as a typical coal province and mining economic region, Shanxi province made a great contribution to the national economic construction and reform. At the same time, coal mining has caused serious damage to the ecological environment, excessive use of resources, the deterioration of the ecological environment and a decline in the sustainable development c...