In-situ stress distribution and coalbed methane reservoir permeability in the Linxing area, eastern Ordos Basin, China

A dynamic evolution model of coal permeability during enhanced coalbed methane recovery by N2 injection: experimental observations and numerical simulation

“…However, the permeability of coal reservoirs in China is generally low, being only 0.01-5 mD, which brings great challenges to underground CBM development. 6,7 Thus, enhancing the permeability of coal reservoirs is the key to improving the efficiency of CBM extraction. Numerous researches have been carried out to investigate the permeability enhancement mechanisms and technologies of coal reservoirs, and measures such as hydraulic ushing, hydraulic fracturing, blasting loosening and advanced borehole have been taken.…”

Coalbed Methane Potential Evaluation and Development Sweet Spot Prediction Based on the Analysis of Development Geological Conditions in Yangjiapo Block, Eastern Ordos Basin, China

“…So far, only a few literatures have been published on CBM geological research in Linxing area. Most of studies on the CBM in the Linxing area are focused on the geological background and some primary evaluations of CBM reservoirs [3][4][5][6][7][8]. These data are insufficient to evaluate the CBM development potential and choose the sweet spot area in Yangjiapo block.…”

Fracturing curve and its corresponding gas productivity of coalbed methane wells in the Zhengzhuang block, southern Qinshui Basin, North China

“…In-situ stress is the internal stress presenting in the earth crust and mainly controlled by gravity and tectonics (Ju et al., 2018), which is an important factor for fracturing (Bell, 2006; Chen et al., 2018; Talebi et al., 2014). The in-situ stress generally has stressed, anisotropic, and non-uniform component, which control the morphology of hydraulic fractures, ground construction pressure, and proppant crushing and embedding (Tang et al., 2011; Wu et al., 2006).…”