Results 11 to 20 of about 51,330 (256)
Experimental Determination on Shale Gas Loss During the Coring Process in Eastern Sichuan Basin
Frontiers in Energy Research, 2020 Shale gas loss by leakage directly affects the accurate measurement of shale gas content during drilling and coring. To accurately calculate shale gas loss, in combination with the actual situation of the shale coring, considering the influence factors ...
Junbo He +8 more
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A fully multifield coupling model of gas extraction and air leakage for in-seam borehole
Energy Reports, 2021 Air leakage around the in-seam borehole leads to a poor quality of gas extracted, thus gas outburst danger is difficult to eliminate but also may cause other disasters, such as coal spontaneous combustion and gas explosion.
Junxiang Zhang +4 more
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Influence of Deformation and Instability of Borehole on Gas Extraction in Deep Mining Soft Coal Seam
Advances in Civil Engineering, 2021 To study the effects of the three deformation instability modes of gas drainage borehole on gas drainage, the deformation instability mechanism of soft coal seams is analyzed, three deformation instability modes are proposed for soft coal seams, namely ...
Xue-Bo Zhang +4 more
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Dynamic leakage mechanism of gas drainage borehole and engineering application
International Journal of Mining Science and Technology, 2018 Borehole leakage not only affects the gas drainage effect but also presents considerable risk to human security. For the research on the leakage mechanism of gas drainage borehole, the rheological and visco-elastic-plastic characteristics were considered
Zhang Junxiang, Li Bo, Sun Yuning
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Energy Science & Engineering, 2023 Gas drainage is an important measure to ensure energy safety in coal mines. However, for mines with high gas content and low permeability, the critical question is how to enhance the drainage effect of drilling.
Xi Jie +3 more
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Gravity drainage during gas injection
Petroleum Geoscience, 1995 The drainage of oil under gravitational forces has been an important mechanism in the production of many oil fields. In order to extend the economic implementation of gas injection into more marginal fields, a reduction in the uncertainties associated with gravity drainage is required.
P. Naylor +4 more
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A New Method for Horizontal Axis Wind Turbine (HAWT) Blade Optimization
International Journal of Renewable Energy Development, 2016 Iran has a great potential for wind energy. This paper introduces optimization of 7 wind turbine blades for small and medium scales in a determined wind condition of Zabol site, Iran, where the average wind speed is considered 7 m /s.
Mohammadreza Mohammadi +2 more
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Influence of interlayer channeling of composite reservoir on gas drainage
Meikuang Anquan, 2022 In order to investigate the influence of surrounding rock characteristics on gas drainage of through layer borehole in composite reservoir, the seepage law of gas in coal seam and rock stratum is analyzed.
ZHANG Zhiyuan +3 more
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Study on Gas Control Methods Optimization for Mining Safety
Advances in Civil Engineering, 2021 Effective gas control is of significance for safe efficient coal mining in Haizi Coal Mine and other mines with similar geological conditions. This study concentrates on gas control theories and techniques in multiple coal seams of Haizi Coal Mine (No. 7,
Liwen He +5 more
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Gas seepage law and drainage borehole layout considering coal body creep
Gong-kuang zidonghua, 2019 In order to research influence of deep coal body creep on gas seepage, mathematical models of multi-field coupling including coal body deformation field, gas diffusion field and gas seepage field were established considering creep action.
SONG Hongli, ZHAO Yang, LI Qingzhao
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