Aiming at the problems of low utilization rate and serious environmental pollution caused by concentration coal bed methane emission in a mine, technology was studied means field investigation theoretical calculation, technical solution comprehensive combining regenerative oxidation cryogenic liquefaction obtained, which realized “coal gas are co-mined shared” constructed virtuous cycle develop...

The transient preheating process of a regenerative oxidation bed placed in a coal mine methane thermal reverse-flow reactor is numerically investigated in this paper. The regenerative oxidation bed is heated by the burned gas which is generated from a burner and is distributed through manifolds, which is modeled in a three-dimensional, unsteady state and laminar flow system, and is assumed as a...

Hydraulic fracturing is an important technical measure for coalbed methane (CBM) development, and the propagation of fractures in target coal seam induced by hydraulic related to stimulation performance CBM recovery. Therefore, effective monitoring fracture development during reservoir critical engineering. In this paper, microseismic technology was used monitor spatial temporal characteristics...

Geological structures of Sima coal mine in Shanxi Province were analyzed to understand the control effect geological on occurrence coalbed methane (CBM) seam #3 mine. The CBM contents districts #2 and tested, effects buried depth, fault collapse column distribution content are studied. research results showed that: 1) average has a linear relationship with depth overburden thickness, but smalls...