Results 11 to 20 of about 181,923 (295)
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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Journal of Rock Mechanics and Geotechnical Engineering, 2020 To reveal the damage characteristics and catastrophic failure mechanism of coal rock caused by gas adsorption, physical tests and theoretical methods are employed. The results show that adsorption swelling can damage coal rock, which can be distinguished by fractal dimension. A fitting relationship between the adsorption damage and fractal dimension is
Xiaochun Xiao +5 more
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Gas-bearing evaluation of deep coal rock in the Yan’an gas field of the Ordos Basin
Frontiers in Earth ScienceThe Yan’an gas field in the Ordos Basin is a typical deep coalbed methane field with tremendous resource potential. Evaluation methods for gas content in deep coal seams are urgently required to be established. This study is aimed at quantitatively analyzing the gas content of coalbed methane in deep coalbed methane reservoirs and revealing its ...
Yongping Wan +6 more
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High-Order Models for Gas Transport in Multiscale Coal Rock
ACS OmegaThe coal reservoirs exhibit great heterogeneity and strong anisotropy in multiscale pore/fracture structures. Developing highly accurate multiscale models for real-time prediction of microgaseous flow in complicated porous media with pronounced contrast in transport coefficients is crucial but not yet available, which is time-consuming, expensive, and ...
Fang Lv +5 more
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Development and Application of Gas Production Measurement System of Coal-Rock under Temperature–Pressure Coupling [PDF]
Sensors, 2022 In this study, a measurement system for gas generation of coal-rock under temperature–pressure coupling was developed by adding gas extraction, collection, and flow-monitoring devices to the original stainless-steel liquid seepage pipeline of an MTS-815 rock triaxial testing machine, which can be used to study the production mechanism of coalbed ...
Chunde Ma +5 more
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Petroleum Exploration and DevelopmentThrough systematic investigation of deep coal-rock gas in the Ordos Basin, NW China, this work analysed the thickness distribution of the entire Upper Paleozoic coal-rock intervals, quantified the resource potential of representative areas (a 12 000 km2 ...
Ailin JIA +3 more
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Characteristics of coal-measure source rock and gas accumulation belts in marine-continental transitional facies fault basins: A case study of the Oligocene deposits in the Qiongdongnan Basin located in the northern region of the South China Sea [PDF]
Energy Exploration & Exploitation, 2019 This study carried out the development and distribution prediction research on coal-formed gas accumulation belts from the perspectives of the development and distribution of the coal measure source rock and the thermal evolution degrees of those rock ...
Zhang Gongcheng +6 more
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Seepage Law of Coal Rock Body in Overburden Zones During Multiple Protection Mining of High-Gas Outburst Coal Seams [PDF]
Applied SciencesCoal and gas outburst accident is a significant risk in high-gas outburst coal seams, and effective pressure relief gas extraction plays a crucial role in mitigating these hazards. The core challenge lies in understanding the seepage behavior of the coal
Jiao Zhu, Bo Li
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Mechanical-permeability characteristics of composite coal rock under different gas pressures and damage prediction model [PDF]
Physics of FluidsDetermining the influence of gas pressure on the mechanics, permeability, and energy evolution of gas-bearing composite coal is helpful to better understand the formation process and prevention measures of gasdynamic disasters. In this paper, true triaxial mechanical-permeability tests are carried out on the gas-bearing composite coal rock under ...
Yangyang Guo +5 more
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Safety classification and application of coal-rock gas compound dynamic disaster in coal mine
IOP Conference Series: Earth and Environmental Science, 2021 Abstract Coal and gas outburst, rockburst are the most serious dynamic disaster in the coal mine production. Based on the current situation of frequent occurrence of coal and gas outbursts and rock burst disasters in deep mines, the characteristic regularity and influencing factors of coal and gas outburst and rockburst disaster are ...
Linchao Dai
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