Results 1 to 10 of about 218 (99)
Experimental Investigation on the Impact of Coal Fines Migration on Pores and Permeability of Cataclastic Coal [PDF]
ACS Omega, 2023 During the production process of coalbed methane, the generation and migration of coal fines can obstruct fractures in coal reservoirs and reduce their permeability. In order to investigate the effects of coal fines migration on the porosity and permeability of coal reservoirs, we conducted core water flooding experiments, low-field nuclear magnetic ...
Tiancheng Xie +5 more
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International Journal of Coal Science & TechnologyThe deposition of coal fines in fractures reduces fracture conductivity and hampers efficient coalbed methane production. The results of the multiphase flow visualization experiment indicate that, at low flow rates, fines primarily deposit at the bottom ...
Wei Li +5 more
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An Experimental Study on Coal Fines Migration during Single Phase Water Flow [PDF]
Geofluids, 2020 Coal fines migration and intrusion in coal fractures affect coalbed methane (CBM) wells performance by reducing reservoir permeability and production continuity. Physical simulations are conducted to investigate the permeability variation under different
Wenlong Han +5 more
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Coal fines migration: A holistic review of influencing factors
Advances in Colloid and Interface Science, 2022 Coal fines can substantially influence coal seam gas reservoir permeability, thus impeding the flow of gas in coal microstructure. The coal fines generation and migration are influenced by several factors, wherein coal fines are generally hydrophobic and aggregate in natural coal seam gas (CSG) under prevailing conditions of pH, salinity, temperature ...
Faisal Ur Rahman Awan +2 more
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Meitan xuebao, 2023 During the hydraulic fracturing of coalbed methane (CBM) well, the deposition of coal fines in propped fractures and the migration of coal fines in cleats will damage the permeabilities of propped fractures and cleats, consequently affecting the ...
Fansheng HUANG +5 more
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Effect of hydrochemical properties on the migration of coal fines in propped fractures
Meitan xuebao, 2023 The problem of coal fines restricts the efficient development of coalbed methane in China. The coal sample of No. 3 coal seam in the Shanxi Formation in the Hancheng mining area was selected for carrying out a physical simulation experiment on the effect
Ziliang LIU +5 more
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Experimental investigation on the impact of coal fines generation and migration on coal permeability [PDF]
Journal of Petroleum Science and Engineering, 2017 Measurements of the coal fines production and the impact of these fines on the permeability of two coals from the Bowen Basin, Australia, were performed at different flow conditions (single-phase water or gas, two-phase water and gas) and pressure conditions. The fines collected from each coal samples ranged in size from 1 mu m to 14 mu m.
Tianhang Bai +2 more
exaly +4 more sources
Experimental Investigation of the Impact of Coal Fines Migration on Coal Core Water Flooding [PDF]
Sustainability, 2018 Coalbed Methane (CBM) has become an important gas resource in recent decades. The brittle property of coal matrix and overactive operation make the migration of coal fines inevitable. Blockage by coal fines that plugs flow paths is a non-negligible issue that results in a significant decline in gas production.
Dapeng Gao
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Geofluids, 2019 Coal fines migration exerts negative impacts on early water drainage of undersaturated coal seam gas (CSG) reservoirs. The complicated migration process results in ineffective and inaccurate forecast of coal fines production.
Xiaolong Peng +6 more
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Visual physical simulation experiment of coal fines migration and blockage removal in fractures
Meitan xuebaoThe deposition of coal fines in fractures can reduce the fracture conductivity and restrict the efficient and stable development of coalbed methane wells.
Yingchun WEI +7 more
doaj +2 more sources