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Keywords: gas extractionClose
Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1569
... ABSTRACT: Mining-induced fracture fields play important role in gas extraction of underground coal mines. Low concentration of extracted gas has been observed during the mining of gas burst-prone coal seams in Shaqu Coal Mine, Shanxi province, China. Theoretical analysis and field observation...
Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-101
... of understanding. This paper investigates the superiority of L-CO 2 as a fracturing fluid for coal seam gas extraction, in terms of break-down pressure and acoustic emission (AE) energy release during fracture propagation. The results reveal that L-CO 2 induced break-down pressure is around 19.6% lesser than...
Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-870
.... In this contribution, based on the known shale permeability, on the known percentage of gas extraction from shale stratum, and on two key features of the measured gas outflow which are (1) the time to peak flux and (2) the halftime of flux decay, it is shown that the fracturing process is characterized by a very dense...
Paper presented at the 46th U.S. Rock Mechanics/Geomechanics Symposium, June 24–27, 2012
Paper Number: ARMA-2012-324
... ABSTRACT: In the last ten years, China has imported numerous advanced technologies of gas extraction and oil exploitation from other countries, and it has made some achievements, especially for the coal seam with a better gas permeability. But for the most coalfield, the surface longhole...
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