Evaluation of the potentiality and suitability for CO2 geological storage in the Junggar Basin, northwestern China

Mi, Zhaoxu; Wang, Fugang; Yang, Yongzhi; Wang, Fang; Hu, Ting; Tian, Hailong

doi:10.1016/j.ijggc.2018.07.024

Cited by 13 publications

(6 citation statements)

References 12 publications

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“…Previous studies have conducted geological site selection and environmental risk assessment for CO 2 sequestration through an analytic hierarchy process, gray correlation method, analytic hierarchy process fuzzy index method, fuzzy comprehensive evaluation method, and numerical simulation method. ,− However, there is still a lack of effective, systematic, and accurate evaluation methods for the feasibility of CO 2 geological sequestration in coal seams . Therefore, the feasibility evaluation of CO 2 geological sequestration in coal seams is proposed in this paper (Figure ).…”

Section: Feasibility Evaluation Of Co2 Storage In Coal Seamsmentioning

confidence: 99%

Influence Factors and Feasibility Evaluation on Geological Sequestration of CO₂ in Coal Seams: A Review

Qin

Zhang

et al. 2023

ACS Omega

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The geological sequestration of CO 2 in coal seams holds significant implications for coalbed methane development and greenhouse gas mitigation. This paper examines the principles, influencing factors, and evaluation methods for geological CO 2 sequestration in coal seams by analyzing relevant domestic and international findings. Suitable geological conditions for CO 2 sequestration include burial depths between 300 and 1300 m, permeability greater than 0.01 × 10 −3 μm 2 , caprock and floor strata with water isolation capabilities, and high-rank bituminous coal or anthracite with low ash yield. Geological structures, shallow freshwater layers, and complex hydrological conditions should be avoided. Additionally, the engineering conditions of temperature, pressure, and storage time for CO 2 sequestration should be given special attention. The feasibility evaluation of CO 2 geological storage in coal seams necessitates a comprehensive understanding of coalfield geological factors. By integrating the evaluation principles of site selection feasibility, injection controllability, sequestration security, and development economy, various mathematical models and "one vote veto" power can optimize the sequestration area and provide recommendations for rational CO 2 geological storage layout.

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Section: Feasibility Evaluation Of Co2 Storage In Coal Seamsmentioning

confidence: 99%

Influence Factors and Feasibility Evaluation on Geological Sequestration of CO₂ in Coal Seams: A Review

Qin

Zhang

et al. 2023

ACS Omega

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“…The results show that this method could effectively utilize expert judgment and minimize decision-maker bias. By combining AHP and fuzzy method, Mi and Wang [25] established the novel index system for evaluating CO 2 geological storage suitability, with 3 index layers and 27 indexes. The evaluation system provides a scientific basis for storage site selection in the Junggar Basin, which could predict the development trend of the structural risk.…”

Section: Introductionmentioning

confidence: 99%

Integrated CO2 Miscible Flooding-Storage Technologies for Complex Fault Block Reservoirs with Low Permeability

Yu¹,

Sun²,

Tang³

et al. 2023

Preprint

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During the production process of complex fault block reservoirs with low permeability, the systematic research on the combination of oil displacement and storage is fuzzy. This work aims at oil displacement and storage to supplement formation energy and evaluate storage potential. Firstly, the optimal development scheme is designed by layer division and miscible and ability. Secondly, based on large amounts of field data, the novel FAHP evaluation system for CO2 storage site selection is established. Thirdly, since judging adaptability evaluation is suitable, the carbon storage simulation is conducted to contain mineralization, dissolved and structural mechanisms. The results indicate that after 1.2HCPV CO 2 injected cumulatively into reservoir, the cumulative oil increase reached 4001.80×10 4 m 3 and the final recovery rate was 44.46%, achieving a good effect. At the stage of injection, the CO2 capacity remaining in the reservoir was nearly 1657.53×10 4 t and the gas storage rate reached 43.84%. The novel evaluation system for CO 2 storage site selection shows that the target reservoir has more storage space, large injection capacity, high safety factor and low storage cost, which is allowed to storage. At the stage of storage, the effective storage capacity of target reservoir was 2257.48×10 4 t, of which the structural storage capacity was 73.43% and the mineral storage capacity was the least (3.46%). The average annual CO 2 storage capacity is about 225.74×10 4 t, which is equivalent to planting 2031.69×10 4 t trees or shutting down 135.69×10 4 cars for one year, achieving oil displacement/storage synergetic optimization. The findings of this study can offer engineers guidance for ensuring the long-term, stable and safe operation of CO 2 storage. For complex fault block reservoirs with low permeability "green, low-carbon, efficient" development has a certain reference.

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“…Global warming has posed a serious threat to the life system of the earth. Therefore, there has been a worldwide consensus to minimize the output of greenhouse gases and strictly control the CO 2 content of the atmosphere [1][2][3][4][5]. In addition to active measures for reducing emissions and improving the Earth's land system absorption capacity of CO 2 , the geological storage of this gas has been evaluated in recent years [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Gas–Water Two-Phase Displacement Mechanism in Coal Fractal Structures Based on a Low-Field Nuclear Magnetic Resonance Experiment

Liu,

Gu,

Yang

et al. 2023

Sustainability

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In this paper, the gas–water two-phase seepage process under a real mechanical environment is restored by a nuclear magnetic resonance experiment, and the gas–water two-phase distribution state and displacement efficiency in coal with different porosity under different gas injection pressures are accurately characterized. The fractal dimension of liquid phase distribution under different gas injection pressures was obtained through experiments, and the gas–water two-phase migration law is inverted according to it. Finally, the gas–water two-phase migration mechanism inside the fractal structure of coal was obtained. The results are as follows: 1. Gas will first pass through the dominant pathway (the composition of the dominant pathway is affected by porosity) and it will continue to penetrate other pathways only when the gas injection pressure is high. When the gas injection pressure is low, the displacement occurs mainly in the percolation pores. With the increase in gas injection pressure, the focus of displacement gradually shifts to the adsorption pore. 2. As the gas injection pressure increases, the displacement efficiency growth rate is relatively uniform for the high-porosity coal samples, while the low-porosity coal samples show a trend of first fast and then slow growth rates. When the gas injection pressure reaches 7 MPa, the displacement efficiency of high-porosity coal samples exceeds that of low-porosity coal samples. 3. With the increase in gas injection pressure, the fractal dimension of the adsorption pore section and the seepage pore section shows an increasing trend, but the fractal dimension of the adsorption pore section changes faster, indicating that with the increase in gas injection pressure, gas–water two-phase displacement mainly occurs in the adsorption pore section.

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Evaluation of the potentiality and suitability for CO2 geological storage in the Junggar Basin, northwestern China

Cited by 13 publications

References 12 publications

Influence Factors and Feasibility Evaluation on Geological Sequestration of CO₂ in Coal Seams: A Review

Influence Factors and Feasibility Evaluation on Geological Sequestration of CO₂ in Coal Seams: A Review

Integrated CO2 Miscible Flooding-Storage Technologies for Complex Fault Block Reservoirs with Low Permeability

Gas–Water Two-Phase Displacement Mechanism in Coal Fractal Structures Based on a Low-Field Nuclear Magnetic Resonance Experiment

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Evaluation of the potentiality and suitability for CO2 geological storage in the Junggar Basin, northwestern China

Cited by 13 publications

References 12 publications

Influence Factors and Feasibility Evaluation on Geological Sequestration of CO2 in Coal Seams: A Review

Influence Factors and Feasibility Evaluation on Geological Sequestration of CO2 in Coal Seams: A Review

Integrated CO2 Miscible Flooding-Storage Technologies for Complex Fault Block Reservoirs with Low Permeability

Gas–Water Two-Phase Displacement Mechanism in Coal Fractal Structures Based on a Low-Field Nuclear Magnetic Resonance Experiment

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Influence Factors and Feasibility Evaluation on Geological Sequestration of CO₂ in Coal Seams: A Review

Influence Factors and Feasibility Evaluation on Geological Sequestration of CO₂ in Coal Seams: A Review