Experimental study on the influence of temperature cycle on low-rank coal permeability
Sign Up to like & getrecommendations! Published in 2020 at "Science China Technological Sciences"
DOI: 10.1007/s11431-019-1460-6
Abstract: The formation temperature is a key factor affecting coalbed methane (CBM) migration in reservoirs. Both the prediction of CBM production and prevention of mine gas disasters require the understanding on the controlling mechanism of temperature… read more here.
Keywords: temperature; coal permeability; permeability; rank coal ... See more keywords
Coal permeability maps under the influence of multiple coupled processes
Sign Up to like & getrecommendations! Published in 2018 at "International Journal of Coal Geology"
DOI: 10.1016/j.coal.2018.01.005
Abstract: Abstract The evolution of coal permeability has been studied exhaustively and a broad array of permeability models developed. These models are normally derived under the assumption of fluid pressure equilibrium between matrix and fractures. Under… read more here.
Keywords: fracture; coal permeability; matrix; gas ... See more keywords
Characterization of anisotropic coal permeability with the effect of sorption-induced deformation and stress
Sign Up to like & getrecommendations! Published in 2022 at "Fuel"
DOI: 10.1016/j.fuel.2021.122089
Abstract: Abstract Changes in permeability are related to coalbed methane (CBM) production activities, and to coal mining safety. However, inherent properties, i.g. anisotropy and heterogeneity make the gas flow mechanism more complex. In this work, an… read more here.
Keywords: anisotropic coal; coal permeability; gas; permeability ... See more keywords
Ultrasonic vibrations and coal permeability: Laboratory experimental investigations and numerical simulations
Sign Up to like & getrecommendations! Published in 2017 at "International journal of mining science and technology"
DOI: 10.1016/j.ijmst.2017.01.001
Abstract: Abstract Ultrasonic vibrations in coal lead to cavitation bubble oscillation, growth, shrinkage, and collapse, and the strong vibration of cavitation bubbles not only makes coal pores break and cracks propagate, but plays an important role… read more here.
Keywords: vibrations coal; cavitation; coal permeability; permeability ... See more keywords
Non-monotonic decrease of coal permeability with depth in highly compressional tectonic settings: A case study in the Bide-Santang Basin, SW China
Sign Up to like & getrecommendations! Published in 2020 at "Marine and Petroleum Geology"
DOI: 10.1016/j.marpetgeo.2020.104321
Abstract: Abstract Coal permeability dependence on depth has been studied and discussed for a long time. However, the scattered distribution of coal permeability versus depth, and specifically the non-monotonic permeability decrease, in highly compressional tectonic settings… read more here.
Keywords: permeability; coal permeability; regime interval; depth ... See more keywords
Evolutionary Model and Experimental Validation of Gas-Bearing Coal Permeability under Negative Pressure Conditions
Sign Up to like & getrecommendations! Published in 2023 at "ACS Omega"
DOI: 10.1021/acsomega.3c01349
Abstract: Coal bed methane drainage is the main approach to lower risks of coal seam while raising the efficiency in natural resource utilization. The negative pressure used for extraction in coal mines is largely determined empirically… read more here.
Keywords: gas; coal permeability; coal; permeability ... See more keywords
A dynamic evolution model of coal permeability during enhanced coalbed methane recovery by N2 injection: experimental observations and numerical simulation
Sign Up to like & getrecommendations! Published in 2021 at "RSC Advances"
DOI: 10.1039/d1ra02605d
Abstract: A dynamic evolution model of coal permeability during CH4 displacement by N2 injection was proposed, considering the combined effects of matrix swelling/shrinkage and effective stress, for providing a reference on N2-ECBM. read more here.
Keywords: model coal; coal permeability; evolution model; dynamic evolution ... See more keywords
Evolution of Coal Permeability during Gas Injection—From Initial to Ultimate Equilibrium
Sign Up to like & getrecommendations! Published in 2018 at "Energies"
DOI: 10.3390/en11102800
Abstract: The evolution of coal permeability is vitally important for the effective extraction of coal seam gas. A broad variety of permeability models have been developed under the assumption of local equilibrium, i.e., that the fracture… read more here.
Keywords: permeability; coal permeability; evolution coal; equilibrium ... See more keywords