Geomechanical risk and mechanism analysis of CO2 sequestration in unconventional coal seams and shale gas reservoirs

Kuang, Nian-jie; Zhou, Junping; Xian, Xuefu; Zhang, Chengpeng; Yang, Kailun; Dong, Zhiqiang

doi:10.1016/j.rockmb.2023.100079

Cited by 31 publications

(4 citation statements)

References 142 publications

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“…Sobolik et al [11] established geomechanical modeling to predict wellbore stresses and strains for the design of wellbore seal repair materials for use at a CO 2 injection site. During the injection of carbon dioxide, changes in temperature may lead to stress changes that can further damage the well, threatening its integrity [12][13][14]. This research has shown that CO 2 injection into the wellbore could lead to changes in wellbore stress and strain.…”

Section: Introductionmentioning

confidence: 92%

The Influence of CO2 Physical Properties on Casing and Its Prediction Method

Cai,

Li,

et al. 2024

Processes

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In order to reveal the physical properties of CO2 under actual formation conditions, this paper establishes a mathematical model of the temperature field and pressure field in the wellbore under CO2 injection conditions, optimizes the state equation of CO2 physical-property parameters, calculates the change trend of CO2 density, viscosity, and compression factor along the wellbore, and obtains the influence law of CO2 corrosion on the casing and interface. The viscosity showed a downward trend along the well depth; the compression factor showed an upward trend. The surfaces of the three casings were smooth and flat without obvious defects, the cement structure was dense, and there was no obvious pore structure. After corrosion, with the increase of Cr content, the change of interfacial corrosion decreases. The morphology of the Q125 and 3Cr interface is loose after corrosion, while there is no obvious change in the 13Cr interface. With the prolongation of corrosion time, low wellbore internal pressure easily causes casing yield, and high wellbore internal pressure easily causes cement-sheath compression failure. The circumferential stress of the casing increases with the corrosion time extension, and the radial stress of the casing and cement sheath decreases first and then increases with the corrosion time. The compressive strength of the cement sheath does not exceed the compressive strength.

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Section: Introductionmentioning

confidence: 92%

The Influence of CO2 Physical Properties on Casing and Its Prediction Method

Cai,

Li,

et al. 2024

Processes

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“…Developing countries consider the reciprocal connection between CO 2 emissions and catch-up economic growth as tangible manifestations of proficiently managing sustainable development via energy production and consumption [ 87 , 88 ]. Indeed, the general populace delivered a compelling exhibition that shed light on the pressing environmental issues that confront the global community [ 80 , 89 ].…”

Section: Literature Reviewmentioning

confidence: 99%

Catch-up growth with alpha and beta decoupling and their relationships between CO2 emissions by GDP, population, energy production, and consumption

Khan

2024

Heliyon

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“…Spontaneous imbibition (SI) refers to the process in which the wetting phase automatically replaces the nonwetting phase under the action of capillary forces . SI has an important influence on the enrichment and flow of fluids in reservoirs, such as the ratio of free oil and brine in the pores of organic matter and inorganic minerals, the loss of fracturing fluid during hydraulic fracturing, , and the leakage of subsurface CO 2 sequestration. , In recent years, many physical experiments and numerical simulations have been carried out on the SI characteristics of shale reservoirs. Xue et al conducted a comparative study on the SI characteristics of sandy interlayer and lake-phase shale.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation on the Spontaneous Imbibition Characteristics of Shale under the Combined Action of CO₂ and Water

Tang,

Wu,

Cheng

et al. 2024

Energy Fuels

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Spontaneous imbibition can impact the fluid distribution and saturation within the shale reservoirs, which, in turn, has an impact on the production and storage of shale oil and gas. The spontaneous imbibition characteristics of shale reservoirs under the CO 2 -brine-rock system will change. In order to understand the spontaneous imbibition characteristics of shale (before and after treatment with different pressures in CO 2 -brine), we researched the rock samples of shale from Chang 7 3 submember of Ordos Basin accordingly to conduct CO 2 -brine immersion treatment under different pressure tests, spontaneous imbibition tests (AFO), NMR T 2 tests, contact angle tests, and XRD tests. The results show that the final imbibition mass of/the initial imbibition rate of/the imbibition volume of brine and dodecane for the shale increase with the treatment pressure (CO 2 -brine immersion stage) increasing on the shale. It is the result of the combination of porosity, wettability, and mineral composition. Although the water wettability of the shale decreases and the relative content of water-wet (oil-wet) minerals decreases (increases), the porosity of the shale increases, so that the final imbibition mass of both brine and dodecane increases. Therefore, porosity has a greater influence on SI. CO 2 -water treatment at different pressures improves the spontaneous imbibition capacity of shale into water and oil, which will be beneficial to the flowback of fracturing fluid and the recovery of crude oil in the process of shale oil production.

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Geomechanical risk and mechanism analysis of CO2 sequestration in unconventional coal seams and shale gas reservoirs

Cited by 31 publications

References 142 publications

The Influence of CO2 Physical Properties on Casing and Its Prediction Method

The Influence of CO2 Physical Properties on Casing and Its Prediction Method

Catch-up growth with alpha and beta decoupling and their relationships between CO2 emissions by GDP, population, energy production, and consumption

Experimental Investigation on the Spontaneous Imbibition Characteristics of Shale under the Combined Action of CO₂ and Water

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Geomechanical risk and mechanism analysis of CO2 sequestration in unconventional coal seams and shale gas reservoirs

Cited by 31 publications

References 142 publications

The Influence of CO2 Physical Properties on Casing and Its Prediction Method

The Influence of CO2 Physical Properties on Casing and Its Prediction Method

Catch-up growth with alpha and beta decoupling and their relationships between CO2 emissions by GDP, population, energy production, and consumption

Experimental Investigation on the Spontaneous Imbibition Characteristics of Shale under the Combined Action of CO2 and Water

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Experimental Investigation on the Spontaneous Imbibition Characteristics of Shale under the Combined Action of CO₂ and Water