Results 21 to 30 of about 4,895,720 (245)
Experimental study and weighting analysis of factors influencing gas desorption
Frontiers in Earth Science, 2023 Gas is one of the necessary contributing factors for coal and gas outburst accidents, and the gas desorbed in coal is the energy carrier in the outburst process.
Xin He +6 more
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Shock and Vibration, 2018 The research adopts the French ROCK600-50 three-axis experiment instrument and SH-II system to evaluate the acoustic emission (AE) peak of the rear axle of yellow sandstone by carrying out the confining pressure synchronous unloading experiment, and ...
Xiao Fukun, Liu Gang, Cheng Qianlong
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Study of the dynamics for gas accumulation in the annulus of production wells
Записки Горного института, 2021 Accumulation of associated petroleum gas in the annulus is one of the negative factors that impede the intensification of mechanized oil production. An increase in annular gas pressure causes growth of bottomhole pressure, a decrease in back pressure to ...
Kamil R. Urazakov +2 more
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Study on Multiparameter Precursory Information Identification of the Fracture of Yellow Sandstone
Advances in Civil Engineering, 2019 In order to explore the disaster caused by uncontrollable instability of coal and rock mass, a multiparameter fusion system is constructed to predict and predict disasters more accurately by identifying the mechanical and acoustic precursors of coal and ...
Xiao Fukun, Wang Houran, Liu Gang
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Applied Sciences, 2023 The plastic zone of the surrounding rock of the borehole is a high-quality channel for gas flow. Studying the distribution form of the plastic zone in the surrounding rock of the boreholes and the characteristics of the extended connection network is ...
Chao Yuan +4 more
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The Rod String Loads Variation during Short-Term Annular Gas Extraction
Energies, 2022 This paper highlights field studies to determine the nature of variations in the load on the sucker-rod string during short-term gas extraction from the wellbore annulus.
Alexander Vladimirovich Artyukhov +4 more
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Shock and Vibration, 2019 An experimental study was carried out to investigate the acoustic emission (AE) characteristics of dry and saturated basalt columnar joints under uniaxial compression and tensile damage by using the TAW-2000 rock experiment system and SH-IIAE system for ...
Liu Gang +3 more
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Optimization and application of W-P model for regional prediction index of outburst coal seam
Meikuang Anquan, 2021 In order to obtain the internal correlation of gas content and gas pressure suitable for different mining areas in Guizhou Province, and accurately calculate the measured values of the two indexes in line with the characteristics of coal seams, the W-P ...
HENG Xianwei, LI Qingsong
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Shock and Vibration, 2019 The acoustic emission characteristics of rock specimens under different initial unloading confining pressures were tested to obtain the damage and rupture characteristics of the sandstone unloading confining pressure path.
Tao Qin +4 more
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Applied Sciences, 2022 The mechanical properties of gas-containing coal and rock mass play important roles in controlling the occurrence and development of coal and gas outbursts. The gradual increase in mining depth will change the failure mechanism of gas-containing coal and
Yejiao Liu +5 more
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