Economic and operational investigation of CO2 sequestration through enhanced oil recovery in unconventional reservoirs in Colorado, USA

Ning, Yanrui; Tura, Ali

doi:10.1016/j.geoen.2023.211820

Cited by 17 publications

(3 citation statements)

References 13 publications

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“…It can not only produce economic benefits through oil displacement but also reduce emissions of carbon. Injecting CO 2 into reservoirs with complete geological structure, good sealing, and detailed basic data not only improves crude oil recovery but also realizes CO 2 storage. − …”

Section: Co2 Storagementioning

confidence: 99%

Application and Research Progress of CO₂ Stimulation Technology in Unconventional Oil and Gas Reservoirs: A Review and Prospect

Fu,

Shao,

Shao

et al. 2023

Energy Fuels

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Section: Co2 Storagementioning

confidence: 99%

Application and Research Progress of CO₂ Stimulation Technology in Unconventional Oil and Gas Reservoirs: A Review and Prospect

Fu,

Shao,

Shao

et al. 2023

Energy Fuels

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“…In addition, the implementation of the CO 2 huff and puff project can realize geological storage of CO 2 and alleviate the increasingly serious greenhouse gas emission problem. It has the dual effects of economic benefit and environmental protection, and it is of great significance for the realization of national carbon peak and carbon neutralization. − …”

Section: Introductionmentioning

confidence: 99%

Characteristics of Crude Oil Production in Microscopic Pores of CO₂ Huff and Puff in Shale Oil Reservoirs

Song,

Chang,

Guan

et al. 2024

Energy Fuels

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The conversion coefficient C between relaxation time T 2 value and pore size was calibrated by a high-pressure mercury injection experiment, low-temperature nitrogen adsorption experiment, and NMR experiment for clarifying the effect of CO 2 huff and puff on the production characteristics of crude oil in shale micronano pores. Then, the effects of huff and puff rounds, the soaking time, and injection pressure on the seepage law of crude oil in shale pores from the microscopic scale were studied. The results showed that the pore size of the main occurrence space of shale oil was mainly distributed in the range of 1−100 nm. The oil production of matrix/matrix-fractured shale mainly depended on the first two rounds. Combined with MRI imaging technology, in the initial stage, CO 2 mainly used the crude oil in the surrounding area of the core for matrix shale, and CO 2 mainly used the crude oil in the fracture and the surrounding area of the fracture for matrix-fractured shale. With the increase of huff and puff rounds, the crude oil inside the core was gradually utilized through CO 2 diffusion for matrix shale and matrix-fractured shale. Prolonging the soaking time could significantly improve the recovery degree of crude oil in small pores, which increased by 4.21%, but the lower limit of pore size was reduced by only 2−3.4 nm. Increasing the injection pressure could not only reduce the lower limit of pore size, which was reduced by 2.4−3.9 nm, but also effectively improve the recovery degree of crude oil in different pores. Compared with the matrix shale core, the matrix-fractured shale core was more sensitive to the soaking time and injection pressure. The research results could provide some reference and guidance for the field test of CO 2 huff and puff in shale reservoirs.

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“…When it comes to storing CO 2 , saline aquifers are more capable than other storage formations, like unmineable coal beds and depleted hydrocarbon reservoirs [7,8]. CO 2 injection in hydrocarbon reservoirs is a more economically valuable method of storing carbon dioxide because it generates additional money from enhanced oil recovery [9]. To maximise efficiency and guarantee safety, carbon dioxide (CO 2 ) is injected at a depth of more than 800 m, which enables it to achieve a supercritical condition [10,11].…”

Section: Introductionmentioning

confidence: 99%

Optimizing CO2-Water Injection Ratio in Heterogeneous Reservoirs: Implications for CO2 Geo-Storage

Al-Khdheeawi

2024

Energies

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The performance of carbon geo-sequestration is influenced by several parameters, such as the heterogeneity of the reservoir, the characteristics of the caprock, the wettability of the rock, and the salinity of the aquifer brine. Although many characteristics, like the formation geology, are fixed and cannot be altered, it is feasible to choose and manipulate other parameters in order to design an optimized storage programme such as the implementation of CO2 injection techniques, including continuous injection or water alternating CO2, which can significantly increase storage capacity and guarantee secure containment. Although WAG (water-alternating-gas) technology has been widely applied in several industrial sectors such as enhanced oil recovery (EOR) and CO2 geo-sequestration, the impact of the CO2-to-water ratio on the performance of CO2 geo-sequestration in heterogeneous formations has not been investigated. In this study, we have constructed a 3D heterogeneous reservoir model to simulate the injection of water alternating gas in deep reservoirs. We have tested several CO2-water ratios, specifically the 2:1, 1:1, and 1:2 ratios. Additionally, we have estimated the capacity of CO2 trapping, as well as the mobility and migration of CO2. Our findings indicate that injecting a low ratio of CO2 to water (specifically 1:2) resulted in a much better performance compared to situations with no water injection and high CO2-water ratios. The residual and solubility trappings were notably increased by 11% and 19%, respectively, but the presence of free mobile CO2 was reduced by 27%. Therefore, in the reservoir under investigation, the lower CO2-water ratio is recommended due to its improvement in CO2 storage capacity and containment security.

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Economic and operational investigation of CO2 sequestration through enhanced oil recovery in unconventional reservoirs in Colorado, USA

Cited by 17 publications

References 13 publications

Application and Research Progress of CO₂ Stimulation Technology in Unconventional Oil and Gas Reservoirs: A Review and Prospect

Application and Research Progress of CO₂ Stimulation Technology in Unconventional Oil and Gas Reservoirs: A Review and Prospect

Characteristics of Crude Oil Production in Microscopic Pores of CO₂ Huff and Puff in Shale Oil Reservoirs

Optimizing CO2-Water Injection Ratio in Heterogeneous Reservoirs: Implications for CO2 Geo-Storage

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Economic and operational investigation of CO2 sequestration through enhanced oil recovery in unconventional reservoirs in Colorado, USA

Cited by 17 publications

References 13 publications

Application and Research Progress of CO2 Stimulation Technology in Unconventional Oil and Gas Reservoirs: A Review and Prospect

Application and Research Progress of CO2 Stimulation Technology in Unconventional Oil and Gas Reservoirs: A Review and Prospect

Characteristics of Crude Oil Production in Microscopic Pores of CO2 Huff and Puff in Shale Oil Reservoirs

Optimizing CO2-Water Injection Ratio in Heterogeneous Reservoirs: Implications for CO2 Geo-Storage

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About

Application and Research Progress of CO₂ Stimulation Technology in Unconventional Oil and Gas Reservoirs: A Review and Prospect

Application and Research Progress of CO₂ Stimulation Technology in Unconventional Oil and Gas Reservoirs: A Review and Prospect

Characteristics of Crude Oil Production in Microscopic Pores of CO₂ Huff and Puff in Shale Oil Reservoirs