Coal-rock gas: Concept, connotation and classification criteria
Petroleum Exploration and DevelopmentIn recent years, great breakthroughs have been made in the exploration and development of natural gas in deep coal-rock reservoirs in Junggar, Ordos and other basins in China.
Guoxin LI +13 more
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Solid-Gas Coupling Model for Coal-Rock Mass Deformation and Pressure Relief Gas Flow in Protection Layer Mining [PDF]
Advances in Civil Engineering, 2018 The solid-gas coupling model for mining coal-rock mass deformation and pressure relief gas flow in protection layer mining is the key to determine deformation of coal-rock mass and migration law of pressure relief gas of protection layer mining in ...
Zhuohui Zhu +4 more
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Experimental study on characteristics of gas seepage in broken coal and rock
Energy Science & EngineeringThe characteristics of gas seepage in broken coal and rock composed of different particle sizes and grades were investigated in this study. On the basis of Darcy's law and non‐Darcy seepage theory, equations of gas permeability in the nonlinear seepage ...
Dingyi Hao +4 more
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Study on failure mechanism of cracked coal rock and law of gas migration
Frontiers in Earth ScienceChina possesses abundant coal resources and has extensive potential for exploitation. Nevertheless, the coal rock exhibits low strength, and the coal seam fractures due to mining activities, leading to an increased rate of gas emission from the coal seam.
Feng Du +8 more
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Enrichment conditions and resource potential of coal-rock gas in Ordos Basin, NW China
Petroleum Exploration and DevelopmentTo reveal the enrichment conditions and resource potential of coal-rock gas in the Ordos Basin, this paper presents a systematic research on the sedimentary environment, distribution, physical properties, reservoir characteristics, gas-bearing ...
Xiaobing NIU +6 more
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Evaluating deep coal rock gas fracturing sweet spot intervals using PSO-ELM algorithm and petrophysical logging data [PDF]
Scientific ReportsThe Daning Jixian block is situated on the eastern periphery of the Ordos Basin. it faces multiple challenges including strong reservoir heterogeneity and unclear identification of fracturing sweet spot interval interval intervals, which restrict the ...
ZhiDi Liu +7 more
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Study on Rheological Properties of Coal Rock Containing Gas under Disturbance Conditions
Shock and Vibration, 2022 In view of the dynamic phenomenon that coal and rock are susceptible to external impact disturbance in the mining process, combined with the rheological hypothesis mechanism of coal and gas outburst, the RLSS-II-type triaxial loading creep test system of
Guoyu Zhang +8 more
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Formation mechanism of coal-rock gas accumulation transition zones
Petroleum Exploration and DevelopmentResearch on hydrocarbon accumulation mechanism in coal-measure whole petroleum systems and coal-rock gas exploration has revealed that coal-rock gas occurs along coal-bearing strata and forms different reservoir types with distinct geological ...
Guoxin LI +6 more
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Generation stages and genetic types of coal-rock gas in China
Petroleum Exploration and DevelopmentBased on the molecular structure transitions, hydrocarbon composition, and reservoir characteristics changes during coal evolution, combined with the production characteristics of coal-rock gas, the generation stages and genetic types of coal-rock gas in
Shuichang ZHANG +5 more
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Deep Coal-rock Gas in China: A Review of Distribution, Geological Characteristics, and Its Enrichment Conditions. [PDF]
ACS OmegaDeep coal-rocks in China are widely distributed and characterized by greater thickness, and coal-rock methane (CRM) resource potentials have been suggested to be huge. In recent years, the exploration and development of deep CRM have achieved major breakthroughs, attracting widespread attention.
Li G +6 more
europepmc +4 more sources