Geologic carbon storage: key components

Alkan, Hakan; Burachok, Oleksandr; Kowollik, P.

doi:10.1016/b978-0-12-823891-2.00009-0

Cited by 7 publications

(5 citation statements)

References 192 publications

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“…Figure 6 depicts the propagation of CO2 saturation, temperature, and pressures over four different time frames, 100 days, one year, 1.5 years, and two years. The gravity override caused by the difference between CO2 and water densities is evident in Figure 6 a-d. (Alkan et al, 2023).…”

Section: Characterization Of Co2 Flow Within the Storage Formationmentioning

confidence: 99%

“…The injection of CO2 into subsurface formations is a well-established technology in the oil and gas industry, serving as an enhanced oil recovery method for several decades (Hill et al, 2013;Kumar et al, 2022). Despite relatively slow development of CCS worldwide, several pilot and commercial scales CO2 storage projects have been or are being performed to prove the reliability and applicability of CO2 injection and to reduce knowledge gaps in providing safe CCS technology (Alkan et al, 2023;Finley et al, 2013;Hovorka et al, 2006;Litynski et al, 2013;Mathieson et al, 2011;Movahedzadeh et al, 2021;Page et al, 2020;Preston et al, 2005;Rangriz Shokri et al, 2021;Sato et al, 2011;Torp & Gale, 2004;Würdemann et al, 2010). Nevertheless, significant CO2 injection over an extended period for storage purposes may pose multiple challenges, including impairments to injectivity and potential leakage from the storage complex.…”

Section: Introductionmentioning

confidence: 99%

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CO2 flow modeling in a coupled wellbore and aquifer system: Details of pressure, temperature, and dry-out

Zamani,

Oldenburg,

Solbakken

et al. 2024

International Journal of Greenhouse Gas Control

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Section: Characterization Of Co2 Flow Within the Storage Formationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

CO2 flow modeling in a coupled wellbore and aquifer system: Details of pressure, temperature, and dry-out

Zamani,

Oldenburg,

Solbakken

et al. 2024

International Journal of Greenhouse Gas Control

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“…The economic and environmental implications of offshore carbon sequestration are intertwined, demanding a holistic approach that aligns financial considerations with ecological preservation. A robust cost-benefit analysis and a comprehensive environmental impact assessment are pivotal steps in ensuring the responsible and sustainable implementation of offshore subsurface carbon storage (Alkan et al, 2023).…”

Section: Economic and Environmental Implicationsmentioning

confidence: 99%

Subsurface Carbon Sequestration Potential in Offshore Environments: A Geoscientific Perspective

Obobi Ume Onwuka,

Akinsola Adu

2024

Eng. sci. technol. j.

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As the global community intensifies efforts to combat climate change, subsurface carbon sequestration emerges as a promising avenue for mitigating greenhouse gas emissions. This paper delves into the geoscientific perspective on the potential for subsurface carbon sequestration in offshore environments. The introduction provides a backdrop on the significance of carbon sequestration and outlines the objectives of exploring the feasibility and challenges associated with offshore subsurface storage. The overview section explores the mechanisms and comparative advantages of offshore carbon sequestration. Geoscientific factors influencing carbon sequestration, including geological characteristics, reservoir assessment, and seismic imaging, are examined in detail. Challenges and risks, both geological and technological, are scrutinized to provide a comprehensive understanding of the complexities involved. Real-world case studies and ongoing research initiatives shed light on successful projects and emerging trends in offshore carbon sequestration. The economic and environmental implications are discussed, emphasizing the need for a thorough cost-benefit analysis and environmental impact assessment. The regulatory framework and compliance standards, both current and future, are explored to ensure responsible implementation. The paper concludes with insights into the future prospects of subsurface carbon sequestration, emphasizing emerging technologies, research priorities, and the imperative for responsible practices. This geoscientific exploration seeks to contribute to the growing body of knowledge guiding sustainable solutions for carbon reduction in offshore environments. Keywords: Subsurface, Carbon, Sequestration Potential, Offshore, Environments, Geoscientific.

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“…CO 2 is the main greenhouse gas that causes heat entrapment in the atmosphere and, eventually, climate change. Many options have been introduced and evaluated to decrease CO 2 emissions into the atmosphere [1,2]. However, geological CO 2 storage is currently the most feasible option that enables rapid and large-scale storage simultaneously in underground formations like aquifers, depleted hydrocarbon reservoirs, coalbed seams, and basalt rocks [3][4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Integrity Experiments for Geological Carbon Storage (GCS) in Depleted Hydrocarbon Reservoirs: Wellbore Components under Cyclic CO2 Injection Conditions

Nassan,

Freese,

Baganz

et al. 2024

Energies

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Integrity of wellbores and near wellbore processes are crucial issues in geological carbon storage (GCS) projects as they both define the confinement and injectivity of CO2. For the proper confinement of CO2, any flow of CO2 along the wellbore trajectory must be prevented using engineered barriers. The effect of cyclic stimuli on wellbore integrity, especially in the context of GCS projects, has been given less attention. In this study, the effect of pressure- and temperature-cycling on two types of wellbore composites (i.e., casing-cement and cement-caprock) have been investigated experimentally in small- and large-scale laboratory setups. The experiments have been carried out by measuring the effective permeability of the composites under pressure and thermal cyclic conditions. Furthermore, the permeability of individual samples (API class G and HMR+ cement and caprock) was measured and compared to the permeability of the composites. The results indicate that the permeability of API class G cement when exposed to CO2 is in the order of 10−20 m2 (10−5 mD) as a result of the chemical reaction between the cement and CO2. In addition, the tightness of the composite cement–rock has been confirmed, while the permeability of the composite casing–cement falls within the acceptable range for tight cement and the CO2 flow was identified to occur through or close to the interface casing–cement. Results from thermal cycling within the range −9 to 14 °C revealed no significant effect on the integrity of the bond casing–cement. In contrast, pressure cycling experiments showed that the effective pressure has a larger influence on the permeability. The potential creation of micro-cracks under pressure variations may require some time for complete closing. In conclusion, the pressure and temperature cycling from this study did not violate the integrity of the casing–cement composite sample as the permeability remained low and within the acceptable range for wellbore cement.

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Geologic carbon storage: key components

Cited by 7 publications

References 192 publications

CO2 flow modeling in a coupled wellbore and aquifer system: Details of pressure, temperature, and dry-out

CO2 flow modeling in a coupled wellbore and aquifer system: Details of pressure, temperature, and dry-out

Subsurface Carbon Sequestration Potential in Offshore Environments: A Geoscientific Perspective

Integrity Experiments for Geological Carbon Storage (GCS) in Depleted Hydrocarbon Reservoirs: Wellbore Components under Cyclic CO2 Injection Conditions

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