The Experts below are selected from a list of 1749 Experts worldwide ranked by ideXlab platform
Jishan Liu - One of the best experts on this subject based on the ideXlab platform.
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recent developments in coal mine methane extraction and utilization in china a review
Journal of Natural Gas Science and Engineering, 2016Co-Authors: Fubao Zhou, Tongqiang Xia, Xinxin Wang, Yifan Zhang, Yuning Sun, Jishan LiuAbstract:Abstract Over past decades, China has changed the manner in which coal mine methane (CMM) was treated: from mitigating its dangers as a mining hazard to developing its potential as an Unconventional Gas Resource. CMM is rich in China coal seams. These coal seams normally have three distinct characteristics: high pressure, strong adsorption and low permeability. These characteristics require novel extraction and utilization technologies. This paper presented a comprehensive review of how these technologies evolve with time from underground extraction to surface drainage to combined surface-underground approach. Major conclusions include: (1) CMM is mainly drained through underground extraction technologies. In order to improve the drainage efficiency, these technologies usually combine with mining-induced stress relief or other active stimulation techniques and modern borehole sealing techniques; (2) Several innovative surface CMM extraction technologies have been proved as effective for Chinese CMM formation conditions, such as gob surface well extraction, stress-relieved seams surface well extraction, multi-branch horizontal directional surface well extraction, and multipurpose surface well extraction; (3) A combined surface-underground approach has been applied to Huainan and Jincheng coal mines. These applications represent the new development trend of CMM extraction and control in China; and (4) Apart from the CMM extraction technologies, utilization technologies also achieved significant progresses in China. The electricity generation and safe transportation technologies of low-concentration Gas have also been developed to improve the Gas utilization rate and guarantee the safe long distance and large flow transportation of low-concentration Gas in China. The implementation of CMM extraction and utilization technologies has led to a large increase of coal production, Gas extraction and utilization, and a significant reduction of fatality.
Tongqiang Xia - One of the best experts on this subject based on the ideXlab platform.
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recent developments in coal mine methane extraction and utilization in china a review
Journal of Natural Gas Science and Engineering, 2016Co-Authors: Fubao Zhou, Tongqiang Xia, Xinxin Wang, Yifan Zhang, Yuning Sun, Jishan LiuAbstract:Abstract Over past decades, China has changed the manner in which coal mine methane (CMM) was treated: from mitigating its dangers as a mining hazard to developing its potential as an Unconventional Gas Resource. CMM is rich in China coal seams. These coal seams normally have three distinct characteristics: high pressure, strong adsorption and low permeability. These characteristics require novel extraction and utilization technologies. This paper presented a comprehensive review of how these technologies evolve with time from underground extraction to surface drainage to combined surface-underground approach. Major conclusions include: (1) CMM is mainly drained through underground extraction technologies. In order to improve the drainage efficiency, these technologies usually combine with mining-induced stress relief or other active stimulation techniques and modern borehole sealing techniques; (2) Several innovative surface CMM extraction technologies have been proved as effective for Chinese CMM formation conditions, such as gob surface well extraction, stress-relieved seams surface well extraction, multi-branch horizontal directional surface well extraction, and multipurpose surface well extraction; (3) A combined surface-underground approach has been applied to Huainan and Jincheng coal mines. These applications represent the new development trend of CMM extraction and control in China; and (4) Apart from the CMM extraction technologies, utilization technologies also achieved significant progresses in China. The electricity generation and safe transportation technologies of low-concentration Gas have also been developed to improve the Gas utilization rate and guarantee the safe long distance and large flow transportation of low-concentration Gas in China. The implementation of CMM extraction and utilization technologies has led to a large increase of coal production, Gas extraction and utilization, and a significant reduction of fatality.
Fubao Zhou - One of the best experts on this subject based on the ideXlab platform.
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recent developments in coal mine methane extraction and utilization in china a review
Journal of Natural Gas Science and Engineering, 2016Co-Authors: Fubao Zhou, Tongqiang Xia, Xinxin Wang, Yifan Zhang, Yuning Sun, Jishan LiuAbstract:Abstract Over past decades, China has changed the manner in which coal mine methane (CMM) was treated: from mitigating its dangers as a mining hazard to developing its potential as an Unconventional Gas Resource. CMM is rich in China coal seams. These coal seams normally have three distinct characteristics: high pressure, strong adsorption and low permeability. These characteristics require novel extraction and utilization technologies. This paper presented a comprehensive review of how these technologies evolve with time from underground extraction to surface drainage to combined surface-underground approach. Major conclusions include: (1) CMM is mainly drained through underground extraction technologies. In order to improve the drainage efficiency, these technologies usually combine with mining-induced stress relief or other active stimulation techniques and modern borehole sealing techniques; (2) Several innovative surface CMM extraction technologies have been proved as effective for Chinese CMM formation conditions, such as gob surface well extraction, stress-relieved seams surface well extraction, multi-branch horizontal directional surface well extraction, and multipurpose surface well extraction; (3) A combined surface-underground approach has been applied to Huainan and Jincheng coal mines. These applications represent the new development trend of CMM extraction and control in China; and (4) Apart from the CMM extraction technologies, utilization technologies also achieved significant progresses in China. The electricity generation and safe transportation technologies of low-concentration Gas have also been developed to improve the Gas utilization rate and guarantee the safe long distance and large flow transportation of low-concentration Gas in China. The implementation of CMM extraction and utilization technologies has led to a large increase of coal production, Gas extraction and utilization, and a significant reduction of fatality.
Zain Rasheed - One of the best experts on this subject based on the ideXlab platform.
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East coast Gas: Resource potential at different Gas price scenarios (Part 1: quantification of Unconventional Gas Resource potential)
The APPEA Journal, 2019Co-Authors: Ian Cockerill, Joe Collins, Zain RasheedAbstract:A qualitative ranking of the remaining Gas potential of Australian east coast basins was undertaken using a spatial analysis methodology of play fairway sweet-spot mapping. Play components considered important for the presence and recovery of Unconventional Gas were mapped across the plays of interest in Australian east coast basins. Modelled horizontal well type curves and development plans from North American analogues for Unconventional Gas production were used to quantify the sweet-spot mapping using a methodology we developed called common recovery segment mapping. A range of potential Resource numbers were calculated for each play, leading to a quantification of the potential Resource across the entire area of interest. Part 2 of this paper will show how these undeveloped Unconventional Gas Resources may ultimately contribute to the east coast Australia energy mix.
Jiro Nagao - One of the best experts on this subject based on the ideXlab platform.
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key findings of the world s first offshore methane hydrate production test off the coast of japan toward future commercial production
Energy & Fuels, 2017Co-Authors: Yoshihiro Konno, Tetsuya Fujii, Akihiko Sato, Koya Akamine, Motoyoshi Naiki, Yoshihiro Masuda, Koji Yamamoto, Jiro NagaoAbstract:Marine methane hydrate in sands has huge potential as an Unconventional Gas Resource; however, no field test of their production potential had been conducted. Here, we report the world’s first offshore methane hydrate production test conducted at the eastern Nankai Trough and show key findings toward future commercial production. Geological analysis indicates that hydrate saturation reaches 80% and permeability in the presence of hydrate ranges from 0.01 to 10 mdarcies. Permeable (1–10 mdarcies) highly hydrate-saturated layers enable depressurization-induced Gas production of approximately 20,000 Sm3/D with water of 200 m3/D. Numerical analysis reveals that the dissociation zone expands laterally 25 m at the front after 6 days. Gas rate is expected to increase with time, owing to the expansion of the dissociation zone. It is found that permeable highly hydrate-saturated layers increase the Gas–water ratio of the production fluid. The identification of such layers is critically important to increase the en...
