Injecting pure N2 and CO2 to coal for enhanced coalbed methane: Experimental observations and numerical simulation

Zhou, Fengde; Hussain, Furqan; Cinar, Yildiray

doi:10.1016/j.coal.2013.06.004

Cited by 133 publications

(63 citation statements)

References 36 publications

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“…This conclusion is consistent with the core flooding results of Connell et al (2011) where binary mixtures were accurately represented with the extended Langmuir model but ternary gas mixtures were subject to greater error. This compares with Zhou et al (2013) who found that extended Langmuir worked well for N 2 ECBM but was less accurate for CO 2 ECBM.…”

Section: Discussionsupporting

confidence: 60%

“…To further that aim and constrain the use of history matching, many properties are measured independently of the core flooding experiments. The current work extends that of Zhou et al (2013) by investigating the models used to represent diffusive exchange between matrix and cleat, using a permeability model specifically developed for hydrostatic conditions and conducting reverse core floods and also repeat core floods to verify observed behaviours.…”

Section: Introductionmentioning

confidence: 95%

“…In addition, the Busch et al (2004) triple porosity model was found to lead to a closer representation of the gas flow process. Zhou et al (2013) present N 2 and CO 2 ECBM core flooding experiments which were used in history matching with an established reservoir simulator used for coal bed methane. In their experiments the observed permeability was approximately constant during the N 2 displacement flood and decreased considerably during the CO 2 flood.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Core flooding experiments of CO2 enhanced coalbed methane recovery

Sander

Connell

Pan

et al. 2014

International Journal of Coal Geology

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Section: Discussionsupporting

confidence: 60%

Section: Introductionmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Core flooding experiments of CO2 enhanced coalbed methane recovery

Sander

Connell

Pan

et al. 2014

International Journal of Coal Geology

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“…Enhanced coalbed methane recovery (ECBM) is the most common method used to solve this problem, such as CO 2 injection, hydraulic slotting, and hydraulic fracturing (Czerw et al, 2016;Jamshidi and Jessen, 2012;Lin et al, 2015;Prusty, 2008, Saghafi, 2010Zhou et al, 2013;Zou et al, 2014). However, these methods have unavoidable limitations.…”

Section: Introductionmentioning

confidence: 99%

Experimental study on the microscopic characteristics affecting methane adsorption on anthracite coal treated with high-voltage electrical pulses

Zhu

Lin

et al. 2017

Adsorption Science & Technology

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The low gas permeability of coal formations with limited coal pores and fractures leads to difficulty in coalbed methane exploration. High-voltage electrical pulse has a potential application in enhanced coalbed methane recovery. In this study, we discuss the microscopic characteristics of anthracite coals treated by high-voltage electrical pulse. We find that C, O, and other coal elements constituting oxygenic groups, which mainly account for gas adsorption, decreased slightly after high-voltage electrical pulse treatment, indicating that elemental variation may have little influence on gas adsorption. The scanning electron microscopy and low-pressure nitrogen gas adsorption (LP-N 2 GA) results show that the cumulative micropore volumes of highvoltage electrical pulse-treated coals were much larger than those of original coals. The mercury intrusion porosimetry results show that the cumulative macropore volumes, which act as gas migration channels in coal increased. Additionally, high-voltage electrical pulse-treated coals were found to have smaller entrapment areas, indicating that gas migration was enhanced.

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“…However, the permeability tests were conducted only with nitrogen and carbon dioxide; methane, the gas of main concern in underground coal mining, was not tested. The influence of gas adsorption on permeability was not considered in the test either, which influenced the accuracy of the results, as coal permeability is pressure-dependent due to different degrees of gas adsorption (Zhou et al, 2013a(Zhou et al, , 2013b.…”

mentioning

confidence: 99%

Potential use of thin spray-on liners for gas management in underground coal mines

Saydam

Mitra

et al. 2016

J. South. Afr. Inst. Min. Metall.

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Coal seam gas problems can adversely affect the safety and productivity of underground coal mines, leading to fatalities and financial losses. Conventional gas management technologies using ventilation and gas drainage are unable to deal with the high and irregular gas emissions associated with high-production longwall mining. New technologies need to be developed to supplement the traditional gas management techniques to minimize the hazard of coal seam gas. Thin spray-on liners (TSLs) have gained some success for rock surface support since their introduction to the mining industry. Due to their relatively low permeability and appropriate mechanical properties, TSLs also show potential to be used as a gas management tool in underground coal mines.In this paper we review the current gas management challenges and discuss the potential use of TSLs as a gas management tool in underground coal mines. This may involve reducing gas migration into the excavations/roadways, enhancing in-seam gas drainage, and preventing spontaneous combustion. Some potential areas for future research work are identified. thin spray-on liner (TSL), gas management, underground coal mining.

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Injecting pure N2 and CO2 to coal for enhanced coalbed methane: Experimental observations and numerical simulation

Cited by 133 publications

References 36 publications

Core flooding experiments of CO2 enhanced coalbed methane recovery

Core flooding experiments of CO2 enhanced coalbed methane recovery

Experimental study on the microscopic characteristics affecting methane adsorption on anthracite coal treated with high-voltage electrical pulses

Potential use of thin spray-on liners for gas management in underground coal mines

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