Results 181 to 189 of about 344 (189)
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The CO2 storage in coal seams at the influence of coal fines migration
2023Abstract: the pressure of the coal seam decays to a certain value due to the production of CH4, the production wells are switched to CO2 injection wells. The injection of CO2 can improve the CH4 recovery and realize the CO2 geological storage.The reverse migration of coal fines produced in the CH4 development stage can be caused by CO2 injection, which
Qian Wang +3 more
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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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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
openaire +1 more source
Enrichment and migration regularity of fine coal particles in enhanced gravity concentrator
International Journal of Mineral Processing, 2017Abstract 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 ...
Xiang-nan Zhu +3 more
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Energy & Fuels, 2014
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
Massarotto, Paul +3 more
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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
Massarotto, Paul +3 more
openaire +4 more sources
The APPEA Journal, 2023
Presented on Wednesday 17 May: Session 22 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 ...
openaire +1 more source
Presented on Wednesday 17 May: Session 22 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 ...
openaire +1 more source
Fuel, 2017
Abstract Long-term pore pressure depletion significantly alters reservoir stresses, which are known to have a substantial impact on permeability in fractured reservoirs. Increased effective stresses resulting from depletion often induce a decrease in permeability.
Igor Shovkun, D. Nicolas Espinoza
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Abstract Long-term pore pressure depletion significantly alters reservoir stresses, which are known to have a substantial impact on permeability in fractured reservoirs. Increased effective stresses resulting from depletion often induce a decrease in permeability.
Igor Shovkun, D. Nicolas Espinoza
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Physics of Fluids
The migration, deposition, and retention of coal fines carried by drainage fluids in gas production wells of coalbed methane (CBM) wells severely restrict CBM production. This study establishes a numerical model to investigate the coupled gas–liquid–coal fines seepage law in the horizontal wellbore annulus during gas production stage using a ...
Xitu Zhang +4 more
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The migration, deposition, and retention of coal fines carried by drainage fluids in gas production wells of coalbed methane (CBM) wells severely restrict CBM production. This study establishes a numerical model to investigate the coupled gas–liquid–coal fines seepage law in the horizontal wellbore annulus during gas production stage using a ...
Xitu Zhang +4 more
openaire +3 more sources
Experimental Investigation on Coal Fines Migration: Proppant Conductivity Studies
SSRN Electronic Journal, 2022Faisal Awan +4 more
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Permeability variation associated with fines production from anthracite coal during water injection
International Journal of Coal Geology, 2015By Professor Furqan Hussain +2 more
exaly