Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Jiang-fu He"'
Publikováno v:
Energy Science & Engineering, Vol 7, Iss 5, Pp 2223-2236 (2019)
Abstract Coalbed methane, which is a significant potential unconventional source of energy, exhibits considerable challenges in the implementation of the exploration and production process, especially the degasification in low permeability of coal se
Externí odkaz:
https://doaj.org/article/ef01d130f30d4c0b924f26599f03d92d
Publikováno v:
Geofluids, Vol 2021 (2021)
As one of the most important unconventional hydrocarbon resources, the oil shale has been extracted with a frozen wall to successfully increase the shale oil production and reduce environmental pollution, which results from the harmful liquids in the
Externí odkaz:
https://doaj.org/article/5851ba8006024496805f3563db0a63ca
Publikováno v:
PLoS ONE, Vol 13, Iss 5, p e0196234 (2018)
Rapid horizontal directional well drilling in hard or fractured formations requires efficient drilling technology. The penetration rate of conventional hard rock drilling technology in horizontal directional well excavations is relatively low, result
Externí odkaz:
https://doaj.org/article/60868ac7c02c4c4c82fb921c7708137b
Publikováno v:
Frattura ed Integrità Strutturale, Vol 9, Iss 34, Pp 564-573 (2015)
Due to some drawbacks of conventional drilling methods and drilling tools, the application of hydraulic hammers with a fluidic amplifier have been extensively popularized since its emergence in recent years. However, the performance life of a fluid
Externí odkaz:
https://doaj.org/article/b5a8b59cbedf49ef8fe999f22a95fd94
Publikováno v:
Frattura ed Integrità Strutturale, Vol 11, Iss 42 (2017)
Hydraulic hammers have been extensively applied to horizontal directional well drilling in hard rock formations. However, the service life of a hydraulic hammer is still unsatisfactory due to the heavy wear or abrasion of the horizontal anvil, which
Externí odkaz:
https://doaj.org/article/c77cd0197088411e82e73a37bac50664
Publikováno v:
Energy Science & Engineering, Vol 7, Iss 5, Pp 2223-2236 (2019)
Coalbed methane, which is a significant potential unconventional source of energy, exhibits considerable challenges in the implementation of the exploration and production process, especially the degasification in low permeability of coal seams with
Publikováno v:
International Journal of Mining, Reclamation and Environment. 34:19-33
Rescue drilling with large-diameter escape shafts is the most efficient methods to get through the trapped miners. In order to improve the penetration rate of rescue drilling technology dur...
Publikováno v:
Geofluids, Vol 2021 (2021)
As one of the most important unconventional hydrocarbon resources, the oil shale has been extracted with a frozen wall to successfully increase the shale oil production and reduce environmental pollution, which results from the harmful liquids in the
Publikováno v:
Energy Science & Engineering. 6:475-483
Publikováno v:
Tunnelling and Underground Space Technology. 71:391-402
The presence of respirable dust in underground space causes serious health hazards for workers while in tunnel drilling, which could result in pneumoconiosis and silicosis. In order to control the dust dispersion and improve the environment quality o