3D hybrid coupled dual continuum and discrete fracture model for simulation of CO2 injection into stimulated coal reservoirs with parallel implementation

Chen, Min; Masum, Shakil; Thomas, Hywel Rhys

doi:10.1016/j.coal.2022.104103

Cited by 14 publications

(8 citation statements)

References 39 publications

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“…As a part of future work, we can use our reservoir model as a reference for underground natural gas storage, CO 2 injection in coal reservoirs, and enhanced oil recovery [37][38][39][40].…”

Section: Future Workmentioning

confidence: 99%

A Reservoir Modeling Study for the Evaluation of CO2 Storage Upscaling at the Decatur Site in the Eastern Illinois Basin

Rathmaier,

Naim,

William

et al. 2024

Energies

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The study of geological CO2 sequestration and its long-term implications are crucial for ensuring the safety and sustainability of carbon capture and storage (CCS) projects. This work presents a numerical reservoir modeling study to upscale CO2 injection in the Eastern Illinois Basin to a cumulative value of 27 Mt within the next 20 years, adding one proposed Class VI injector well to the two already existing ones in this field. Along with the reservoir simulations that include the main CO2 trapping mechanisms that ensure a minimum of a 100-year Area-of-Review containment, we describe a step-by-step approach to enhance measurement, monitoring, and verification (MMV) plans, starting from low-cost methods such as repeated 1D VSP in existing boreholes to 2D seismic surveys and higher-cost data acquisition techniques.

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“…As a part of future work, we can use our reservoir model as a reference for underground natural gas storage, CO 2 injection in coal reservoirs, and enhanced oil recovery [37][38][39][40].…”

Section: Future Workmentioning

confidence: 99%

A Reservoir Modeling Study for the Evaluation of CO2 Storage Upscaling at the Decatur Site in the Eastern Illinois Basin

Rathmaier,

Naim,

William

et al. 2024

Energies

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“…The mass transfer term in eqs and depends on the mass exchange rate and the difference between the gas concentrations in the fracture continuum and matrix continuum, , given as where τ is the diffusion time.…”

Section: A1mentioning

confidence: 99%

“…where k is the fracture permeability, the stress-dependent permeability model by Chen, et al 54 is used for estimating permeability evolution, μ is the viscosity of the gas, p f is the gas pressure, which can be estimated using the real gas law p f = ZRTρ f /M, Z is the gas compressibility factor, which is calculated using the Peng−Robinson equation of state, R is the universal gas constant, T is the temperature, and M is the molar mass. The mass transfer term in eqs B1 and B2 depends on the mass exchange rate and the difference between the gas concentrations in the fracture continuum and matrix continuum, 45,55 given as (B4) where τ is the diffusion time.…”

Section: B1 Theorymentioning

confidence: 99%

Modeling Gas Adsorption–Desorption Hysteresis in Energetically Heterogeneous Coal and Shale

et al. 2023

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Adsorption of gases in porous adsorbents such as coal and shale generally exhibits the phenomenon of hysteresis. Most of the previous studies on desorption hysteresis were conducted via experimental tests. However, few theoretical models that represent adsorption−desorption hysteresis of gases in porous sorbents are available. To address this issue, this work develops a new adsorption−desorption model for describing adsorption and desorption isotherms of gases with hysteresis. Particularly, the energetically heterogeneous surfaces of an adsorbent are considered via the patchwise model. Based on the change in site energy distribution, a logarithmically pressure-dependent hysteresis index, which is used to measure the degree of hysteresis, is derived for quantitative assessment of the degree of hysteresis. Besides, the correlation between the desorption isotherm and initialized pressure for desorption is established. The accuracy of the proposed model to adequately describe the adsorption−desorption hysteresis of gas in coal and shale is demonstrated by validating the model against laboratory experiments obtained from the literature. The results indicate that the adsorption isotherm depends significantly on site energy distribution. By comparing the site energy distributions for adsorption and desorption isotherms, it is found that the desorption hysteresis can be attributed to the change in pore size distribution caused by adsorption-induced deformation. The analyses support that the proposed model can be used as an effective tool to quantitatively predict the amount of released gas during desorption, which is significant for designing coalbed methane or shale gas production and assessing long-term CO 2 storage behavior.

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“…The model predicted results are compared with relevant experimental data collected from literatures. More validation exercises can be found in our previous work, including the role of discrete fractures in flow process and numerical algorithm (Chen et al, 2020a(Chen et al, , 2022. Wang et al (2017) conducted experimental test on a nitrogen (N 2 ) diffusion (adsorption kinetic) in coals.…”

Section: Model Validationmentioning

confidence: 99%

“…When gas is injected in coalbeds, it firstly flows through fractures, and then diffuses into porous coal matrices. Coal matrix contains numerous pores, which provide the potential sites that have strong affinity to certain gases, such as CO 2 , CH 4 (Chen et al, 2022;Shi and Durucan, 2003), as shown in Fig. 1(b).…”

Section: Introductionmentioning

confidence: 99%

Three-dimensional cleat scale modelling of gas transport processes in deformable fractured coal reservoirs

Chen¹,

Masum²,

Thomas³

2023

Gas Science and Engineering

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3D hybrid coupled dual continuum and discrete fracture model for simulation of CO2 injection into stimulated coal reservoirs with parallel implementation

Cited by 14 publications

References 39 publications

A Reservoir Modeling Study for the Evaluation of CO2 Storage Upscaling at the Decatur Site in the Eastern Illinois Basin

A Reservoir Modeling Study for the Evaluation of CO2 Storage Upscaling at the Decatur Site in the Eastern Illinois Basin

Modeling Gas Adsorption–Desorption Hysteresis in Energetically Heterogeneous Coal and Shale

Three-dimensional cleat scale modelling of gas transport processes in deformable fractured coal reservoirs

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