Carbon dioxide storage in subsurface geologic medium: A review on capillary trapping mechanism

Raza, Arshad; Rezaee, Reza; Bing, Chua Han; Gholami, Raoof; Hamid, Mohamed Ali; Nagarajan, R.

doi:10.1016/j.ejpe.2015.08.002

Cited by 62 publications

(28 citation statements)

References 49 publications

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“…Chemical trapping consists of mutual dissolution of injected CO 2 and brine and mineral trapping. Local capillary trapping due to storage zone heterogeneity may also be a significant trapping mechanism for heterogeneous storage zones . Structural, residual, and solubility trapping mechanisms are modeled in this study for the injection period only.…”

Section: Introductionmentioning

confidence: 99%

Response surface modeling of CO₂dynamic storage efficiency factor in high permeability thick sandstones

2019

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In order to utilize as much of the pore space for CO2 storage in high permeability thick saline aquifers, it is vital to investigate the interactions of injected CO2 with formation brine and rock. In order to quantify the displacement process, we investigate the dynamic storage efficiency factor (DSEF) for saline aquifers where pressure increase is minimal during the injection phase. Dimensionless numbers are derived from basic governing equations, constitutive equations, initial and boundary conditions using the inspection analysis. Then using the Hammersley sequence sampling, 178 numerical experiments are designed, and a compositional reservoir simulator is used to perform these simulations. In the next step, response surface regression analysis is used to establish a relationship between DSEF obtained from the numerical simulations and the corresponding dimensionless numbers. The simulation results show that for the studied conditions the underground dynamics is mostly influenced by the gravity number, followed by effective aspect ratio and dip numbers. The results from the response surface regression analysis are used to develop a correlation, which can be used to estimate the dynamic CO2 storage capacity of relevant zones. This study provides quantitative measures for the different competing mechanisms involved in underground displacement of fluids in CO2 geological storage, which can serve as a useful tool during planning phase of storage projects. © 2019 Society of Chemical Industry and John Wiley & Sons, Ltd.

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Section: Introductionmentioning

confidence: 99%

Response surface modeling of CO₂dynamic storage efficiency factor in high permeability thick sandstones

2019

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“…Capillary trapping is one mechanism by which supercritical CO 2 (sCO 2 ) can be fixed in porous and permeable units. This has been studied and documented both experimentally and theoretically . This trapping mechanism involves immobilizing a portion of the injected sCO 2 and confining it in the reservoir by means of capillary forces between the supercritical liquid and the surfaces of the pores.…”

Section: Introductionmentioning

confidence: 99%

“…This trapping mechanism involves immobilizing a portion of the injected sCO 2 and confining it in the reservoir by means of capillary forces between the supercritical liquid and the surfaces of the pores. These capillary forces exceed buoyancy forces, implying that capillary trapping is one of the more secure and efficient mechanisms for safely securing the sCO 2 into the subsurface . The portion of the pore space that remains filled with sCO 2 and is immobilized at a given pressure is termed the ‘residual saturation’.…”

Section: Introductionmentioning

confidence: 99%

Pore system characterization of Cambrian‐Ordovician carbonates using a new mercury porosimetry‐based petrofacies classification system: application to carbon sequestration reservoirs

2018

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To better understand injection and post‐injection flow processes and the entrapment of supercritical CO2 during geological carbon sequestration in a carbonate reservoir, the pore system was analyzed in 66 Cambrian‐Ordovician carbonate samples from several locations in the midwestern USA. This work employed standard microphotography from thin sections, helium porosimetry for porosity and permeability, and mercury injection capillary pressure analysis, aiming to understand which elements of the pore system dominantly control the overall flow and CO2 storage potential in the subsurface. In particular, mercury injection capillary pressure analysis has been fundamental in understanding several petrophysical properties of rocks, including porosity, permeability, and the pore‐size distribution of the samples under study. This work analyzes mercury injection capillary pressure data and proposes a petrophysical subdivision of the samples into four petrofacies, based on values of porosity, permeability, and capillary entry pressure. This system aims to predict the portions of the studied carbonate sequence that are more likely to have a higher potential for injectivity and storage, and to better understand how porosity, permeability, capillary entry pressure, and pore size all play a role in ensuring both buoyant and capillary trapping mechanisms to secure the injected supercritical CO2. Results from this investigation suggest that in these Cambrian‐Ordovician carbonate reservoirs, pore size inversely correlates with capillary entry pressure, and that permeability does not always have a direct relationship with pore size but rather relates to the overall interconnectivity of the complex pore system. © 2018 Society of Chemical Industry and John Wiley & Sons, Ltd.

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“…The cryogenic separation method for CO 2 capture is mainly based on the principle of condensation and cooling [106][107][108][109][110]. It is mostly applied in CO 2 capture systems where the gas streams contain a high concentration of CO 2 .…”

Section: Cryogenic Separationmentioning

confidence: 99%

The Potential of CO2 Capture and Storage Technology in South Africa’s Coal-Fired Thermal Power Plants

Yoro

Sekoai

2016

Environments

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Abstract:The global atmospheric concentration of anthropogenic gases, such as carbon dioxide, has increased substantially over the past few decades due to the high level of industrialization and urbanization that is occurring in developing countries, like South Africa. This has escalated the challenges of global warming. In South Africa, carbon capture and storage (CCS) from coal-fired power plants is attracting increasing attention as an alternative approach towards the mitigation of carbon dioxide emission. Therefore, innovative strategies and process optimization of CCS systems is essential in order to improve the process efficiency of this technology in South Africa. This review assesses the potential of CCS as an alternative approach to reducing the amount CO 2 emitted from the South African coal-fired power plants. It examines the various CCS processes that could be used for capturing the emitted CO 2 . Finally, it proposes the use of new adsorbents that could be incorporated towards the improvement of CCS technology.

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Carbon dioxide storage in subsurface geologic medium: A review on capillary trapping mechanism

Cited by 62 publications

References 49 publications

Response surface modeling of CO₂dynamic storage efficiency factor in high permeability thick sandstones

Response surface modeling of CO₂dynamic storage efficiency factor in high permeability thick sandstones

Pore system characterization of Cambrian‐Ordovician carbonates using a new mercury porosimetry‐based petrofacies classification system: application to carbon sequestration reservoirs

The Potential of CO2 Capture and Storage Technology in South Africa’s Coal-Fired Thermal Power Plants

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Carbon dioxide storage in subsurface geologic medium: A review on capillary trapping mechanism

Cited by 62 publications

References 49 publications

Response surface modeling of CO2dynamic storage efficiency factor in high permeability thick sandstones

Response surface modeling of CO2dynamic storage efficiency factor in high permeability thick sandstones

Pore system characterization of Cambrian‐Ordovician carbonates using a new mercury porosimetry‐based petrofacies classification system: application to carbon sequestration reservoirs

The Potential of CO2 Capture and Storage Technology in South Africa’s Coal-Fired Thermal Power Plants

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Response surface modeling of CO₂dynamic storage efficiency factor in high permeability thick sandstones

Response surface modeling of CO₂dynamic storage efficiency factor in high permeability thick sandstones