Simulation of CO2 enhanced coalbed methane recovery in Jharia coalfields, India

Vishal, Vikram; Mahanta, Bankim; Pradhan, Sarada Prasad; Singh, T. N.; Ranjith, P.G.

doi:10.1016/j.energy.2018.06.104

Cited by 64 publications

(30 citation statements)

References 36 publications

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“…However, it should be noted that for CO 2 to flood the CBM reservoir and sweep out the methane, the coal seams should have a moderate to high permeability (at least 1 mD) that may limit the commercial application of ECBM techniques in many coal fields. The technical feasibility of CO 2 driven ECBM has been studied through numerical modeling and simulation studies in Jharia and Raniganj coalfields (Vishal et al, 2013;Vishal et al, 2018). The simulation studies show that 218 Mm 3 of CO 2 can be sequestered in place of 74 Mm 3 of methane produced from chosen dimensions of Raniganj coalfields and approximately 220 Mm 3 of CO 2 can be sequestered in place of 62 Mm 3 methane in Jharia coal fields.…”

Section: Extraction Of Coal Bed Methanementioning

confidence: 99%

A brief overview of CBM Development in India

Sain¹,

Vadapalli²,

Vedanti³

2020

PINSA

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Usage of coal as a source of clean energy is a priority area for Govt. of India to meet the overall objective of a low carbon path; hence Clean Coal Technology (CCT) is being pursued under a National Mission Program. The CCT is a broader term that includes all the technologies which can help reduce emissions during various stages of the coal cycle.Exploration and production of Coal Bed Methane (CBM) and its commercial utilization also comes under a larger umbrella of CCT. Studies show that the CBM reserves in Gondwana basin of India hold significant prospects to ensure sustainable energy supply in the future, and provide a potential option for CO 2 sequestration. According to the DGH, prognosticated CBM resources are about 92 TCF in 12 states of India and the commercial production of CBM in India has already commenced w.e.f. July 2007 in Raniganj (South) block in West Bengal. In this paper, we present a brief overview of development of Coal Bed Methane (CBM) and Coal Mine Methane (CMM) in India.

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Section: Extraction Of Coal Bed Methanementioning

confidence: 99%

A brief overview of CBM Development in India

Sain¹,

Vadapalli²,

Vedanti³

2020

PINSA

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“…For the sake of safety, the gas environment was CO 2 and the gas pressure was 3 MPa.Condition 2: By keeping σ Y and σ Z unchanged, σ X was raised to 20, 25, 30, 35, 40, 45 and 50 MPa.Condition 3: By keeping σ X and σ Z unchanged, σ Y was reduced to 45, 40, 35, 30, 25, 20 and 15 MPa.Condition 4: Z -direction loading, X -direction unloading, Y -direction loading and Z -direction unloading, were continued as described in Conditions 2 and 3. When loaded or unloaded in one direction, the force was kept constant in the other two directions.It is true that CO 2 adsorption will cause the coal matrix swelling [21,22]. Hence, the total strain and permeability of the coal are affected by CO 2 adsorption.…”

Section: Experimental Apparatus and Schemementioning

confidence: 99%

“…It is true that CO 2 adsorption will cause the coal matrix swelling [21,22]. Hence, the total strain and permeability of the coal are affected by CO 2 adsorption.…”

Section: Experimental Schemementioning

confidence: 99%

Influence of principal stress effect on deformation and permeability of coal containing beddings under true triaxial stress conditions

Dai

Liu

2019

R. Soc. open sci.

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In situ stress is generally an anisotropic/true triaxial stress ( σ 1 > σ 2 > σ 3 ). Bedding weakens the continuity and integrity of coal. It is critical to understand the mechanical behaviour and gas migration of coal under true triaxial stress conditions. We performed experiments of cubic coal samples to investigate the permeability evolution and mechanical behaviour of coal under true triaxial stress conditions by using newly developed true triaxial geophysical apparatus. We analysed the effect of principal stresses on deformation and permeability characteristics of coal containing bedding planes. The results show that volumetric strain, stress states and bedding directions determine the permeability comprehensively. The variable quantity of strain was the largest in the direction normal to the bedding plane. The expansion or compression degree was characterized by the difference between the major and minor principal strain ( ɛ 1 − ɛ 3 ). Essentially, this represents the difficulty degree with regard to coal being compressed at the initial stress state and the deformation degree in ɛ 1 and ɛ 3 direction. The variation of ( ɛ 1 − ɛ 3 ) was consistent with that of permeability. Under an identical true triaxial stress condition, permeability was smaller when larger stress was applied in the direction normal to the bedding plane. Additionally, stress level in the direction parallel to the bedding planes and the directions between stresses in the direction parallel to the bedding planes and the flow direction also affect the permeability and strain. By solving lateral expansion coefficient, coal also exhibited anisotropic properties.

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“…Research has been carried out on ECBM through experiments and numerical simulations [7][8][9][10]. When CO 2 is pressurized into coal seams, gas transport mainly includes diffusion, seepage, and competitive adsorption [11].…”

Section: Introductionmentioning

confidence: 99%

Permeability Characteristics of Coal after Supercritical CO₂ Adsorption at Different Temperatures

Liu

et al. 2020

Geofluids

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CO2 storage in coal seams has become one effective method to reduce CO2 emission and help exploit coalbed methane (CBM). The permeability is a key parameter for CBM extraction. In deep coal seams (>800 m), CO2 exists in the supercritical state. In the present work, permeability tests were performed on briquettes before and after supercritical CO2 (SC-CO2) adsorption at various temperatures to investigate the effects of SC-CO2 adsorption on the permeability. Experimental results show that SC-CO2 adsorption leads to volumetric expansion and permeability augment. The permeability enhancement decreases continuously at 35°C, while it initially increases and reduces at pressures exceeding 9 or 10 MPa at 45 or 55°C, respectively. Besides, the permeability enhancement ratio shows a linear increase with the expansion. The research provides a basis for further research on the enhanced coalbed methane (ECBM) recovery.

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Simulation of CO2 enhanced coalbed methane recovery in Jharia coalfields, India

Cited by 64 publications

References 36 publications

A brief overview of CBM Development in India

A brief overview of CBM Development in India

Influence of principal stress effect on deformation and permeability of coal containing beddings under true triaxial stress conditions

Permeability Characteristics of Coal after Supercritical CO₂ Adsorption at Different Temperatures

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Simulation of CO2 enhanced coalbed methane recovery in Jharia coalfields, India

Cited by 64 publications

References 36 publications

A brief overview of CBM Development in India

A brief overview of CBM Development in India

Influence of principal stress effect on deformation and permeability of coal containing beddings under true triaxial stress conditions

Permeability Characteristics of Coal after Supercritical CO2 Adsorption at Different Temperatures

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Product

Resources

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Permeability Characteristics of Coal after Supercritical CO₂ Adsorption at Different Temperatures