Results 161 to 170 of about 330 (198)
Modeling of Coal Fine Migration During CBM Production in High-Rank Coal
Transport in Porous Media, 2017 During CBM (coalbed methane) production, the interaction of coal fracture surface with water flow commonly generates and starts coal fine flow. Part of flowing coal fines deposit in coal fracture system due to water production reduction and methane production increase.
Suyang Zhu +7 more
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Transport in Porous Media, 2013 A simple and effective experimental method is proposed to simulate coal fines migration through the proppant pack; such migration inevitably occurs during the process of fracturing fluid flowback or dewatering and gas production in coalbed methane (CBM) reservoirs.
Yushi Zou, S. C. Zhang, J. Zhang
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The APPEA Journal, 2023 Fines migration in coalbed methane (CBM) fields comprises a serious environmental and gas-production challenge. The literature widely reports two kinds of fines: potential coal fines, which are a part of the coal body and can be detached by breakage under a significant drag force exerted from the inflowing water, and detrital coal fines, which are ...
Abolfazl Hashemi +4 more
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Energy & Fuels, 2021 Fracture and cleats development controls the permeability of coal reservoirs, while the migration of coal fines can block fractures and affect coalbed methane (CBM) production performance.
Wenlong Han +6 more
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An experimental study of coal-fines migration in Coalbed-methane production wells
Journal of Natural Gas Science and Engineering, 2015 Abstract Coalbed Methane (CBM) has become an important gas resource in the last several decades. The brittle property of coal matrix and overflushing operation make the migration of coal fines inevitable. As the liquid flows below a critical velocity, the coal-fines accumulate in the bottomhole.
Guoqing Han +5 more
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Fuel, 2021 Abstract Coal gasification fine slag is a kind of industrial waste produced from coal gasification process, and high-moisture coal gasification fine slag filter cake has brought challenges to environment and coal energy suatainable development.
Fanhui Guo +8 more
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Advanced Powder Technology, 2020 Abstract The vibrated dense medium fluidized bed is an efficient waterless dry coal separation technology. In order to reduce the interference of the macroscopic migration of the entire bed with the coal settlement process, the material composition and diffusion behavior of the binary medium are studied.
Enhui Zhou +6 more
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Enrichment and migration regularity of fine coal particles in enhanced gravity concentrator
International Journal of Mineral Processing, 2017 Abstract Enrichment and migration regularity of coal particles in compound force field provided by Falcon concentrator were studied. Influence of centrifugal force and fluidization water pressure on the distribution rates and ash contents of materials that enriched in overflow, top separation area and bottom separation area were tested respectively ...
Xiangnan Zhu +3 more
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Journal of Natural Gas Science and Engineering, 2016 Abstract This study presents a systematic experimental methodology to investigate permeability damage caused by fines migration. The workflow starts with a thorough characterization of a bituminous coal sample by the XRD, SEM-EDX, petrographic, proximate and ultimate methods.
Zhenghuai Guo +2 more
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Energy & Fuels, 2013 Drilling through coal beds and high initial fluid production rates can lead to shear and compressive failure of coal, resulting in the creation of coal fines. In overbalanced drilling, these fines mix with the drilling fluid and are carried into the near-wellbore zone. During initial water production, the fines are transported to the producing wellbore
P. Massarotto +3 more
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