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Citations since 2016
9 Research Items
Guangjun Feng currently works at the School of Resources and Earth Science, China University of Mining Technology. Guangjun mainly does research in geological evaluation of shale gas, CBM and coal measure gas, unconventional reservoir characterization, supercritical fluid dynamics in porous medium, and mining safety.
Pore structure and methane adsorption of coal reservoir are closely correlated to the coalbed gas occurrence and outburst. Full-scale pore structure and its fractal heterogeneity of coal samples were quantitatively characterized using low-pressure N2 gas adsorption (LP-N2GA) and high-pressure mercury intrusion porosimetry (HP-MIP). Fractal pore str...
Surface atom functionalization and the variation of aliphatic/aromatic structures within coal macromolecules are key factors to determine the pore structures within coalification. The characteristics of nano-micron scale pore structures were analyzed with the aid of coupled fluid intrusion and molecular probe technologies. Results indicate that the...
An accurate classification of pore fluid typing in coals is critical for understanding and assessing fluid flow characteristics during coalbed methane production, but the widely used nuclear magnetic resonance (NMR) single T2 cutoff (T2C) model remains some apparent defects. In this study, we proposed a novel NMR dual T2 cutoffs model for fluid typ...
The compressibility of the shale matrix reflects the effects of reservoir lithology, material composition, pore structure, and tectonic deformation. It is important to understand the factors that influence shale matrix compressibility (SMC) and its effects on the pore size distribution (PSD) heterogeneity in order to evaluate the properties of unco...
Discriminating multiphase methane (adsorbed and free phases) in coals is crucial for evaluating the optimal gas recovery strategies of coalbed methane (CBM) reservoirs. However, the existing volumetric-based adsorption isotherm method only provides the final methane adsorption result, limiting real-time dynamic characterization of multiphase methan...
To investigate supercritical methane adsorption on shale and its controlling factors, high-pressure (up to 20MPa) methane adsorption experiments were performed on overmature Niutitang shales from Upper Yangtze area in China. Combining field emission scanning electron microscopy (FE-SEM), low-pressure N2 adsorption (LP-N2-GA) and CO2 adsorption (LP-...
Pore structure plays an important role in the gas storage and flow capacity of shale gas reservoirs. Field-emission environmental scanning electron microscopy (FE-SEM) in combination with low-pressure carbon dioxide gas adsorption (CO2GA), nitrogen gas adsorption (N2GA), and high-pressure mercury intrusion (HPMI) were used to study the nanostructur...