Evaluating the recovery potential of CH4 by injecting CO2 mixture into marine hydrate-bearing reservoirs with a new multi-gas hydrate simulator

Tian, Hailong; Yu, Zimeng; Xu, Tianfu; Xiao, Ting; Shang, Songhua

doi:10.1016/j.jclepro.2022.132270

Cited by 16 publications

(3 citation statements)

References 17 publications

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“…Previous laboratory studies − have proven that the CO 2 –CH 4 hydrate replacement reaction can be performed in zones A–D (Figure a). However, the temperature and pressure conditions of typical marine NGH reservoirs − are mainly located in zones D and E (Figure b).…”

Section: Introductionmentioning

confidence: 93%

Liquid CO₂–CH₄ Hydrate Replacement Reaction above 281.15 K: Implication for CH₄ Recovery and CO₂ Sequestration in Marine Environments

You,

Chen,

et al. 2024

Energy Fuels

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Temperature and pressure of natural gas hydrate (NGH) reservoirs influence CH 4 recovery and CO 2 sequestration through the CO 2 −CH 4 hydrate replacement reaction. The typical temperature and pressure in marine NGH reservoirs are mainly 275.65−294.51 K and 8.41−22.25 MPa, respectively. However, the corresponding CO 2 −CH 4 hydrate replacement reaction under the temperature above 281.15 K has been studied little in previous studies. In this work, six experiments were conducted at 281.15− 289.15 K and 15−17 MPa using a self-developed experimental apparatus. These experiments utilized techniques such as general photography, microscopy, temperature and pressure measurements, computational analysis, and gas chromatography to study the dynamic changes in the morphology and distribution of CH 4 , CO 2 , and H 2 O under varying temperatures, pressures, and compositional conditions. The results showed that liquid CO 2 replaced CH 4 in CH 4 hydrates or CH 4 −CO 2 mixed hydrates. This replacement process was featured with multiple mechanisms during the soaking stage and governed by the CH 4 −CO 2 mixed hydrate phase equilibrium, which was controlled by CH 4 −CO 2 mixtures and their compositions. Moreover, the relative increases of the CH 4 molar ratio in the CO 2 -rich fluid phase, the efficiency of CO 2 sequestration, and the CO 2 sequestration amount in comparison with the CH 4 reserves reached 24.97%, 19.53%, and 2.17 times, respectively. CO 2 injection pressure and the initial volume fraction of liquid water and the CO 2 -rich fluid were found to have larger impacts on the CO 2 −CH 4 hydrate replacement reaction above 281.15 K than temperature and the initial volume of CH 4 hydrate. Besides, controlling the composition of the CH 4 −CO 2 −H 2 O mixed system and depressurization were proposed to balance CH 4 recovery and CO 2 sequestration. This work may offer some references for CH 4 recovery and CO 2 sequestration under real settings.

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Section: Introductionmentioning

confidence: 93%

Liquid CO₂–CH₄ Hydrate Replacement Reaction above 281.15 K: Implication for CH₄ Recovery and CO₂ Sequestration in Marine Environments

You,

Chen,

et al. 2024

Energy Fuels

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“…Also, ref evaluated the CH 4 recovery efficiency and CO 2 sequestration in marine hydrate-bearing sediment reservoirs by injecting CO 2 mixture gases. A simulator known as TOUGH + MultiGasHydrate V1.0 (T + MGH V1.0) was developed and verified using field data collected from the SH2 site in the Shenhu area of the South China Sea (SCS), and it was assumed that the hydrate reservoirs contained pure methane at the beginning of the simulation.…”

Section: Modeling and Simulationsmentioning

confidence: 99%

Section: Modeling and Simulationsmentioning

confidence: 99%

Critical Review on Carbon Dioxide Sequestration Potentiality in Methane Hydrate Reservoirs via CO₂–CH₄ Exchange: Experiments, Simulations, and Pilot Test Applications

et al. 2023

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Many researchers have investigated the potential of methane hydrate reservoirs (MHRs) for carbon dioxide (CO2) sequestration and methane (CH4) production through the CO2–CH4 replacement method. This technique is not yet commercially implemented due to various limitations, especially economic reasons. This study investigated recent advancements in MHRs potentiality for CO2 sequestration through CO2 or mixed gas exchange injection while recovering CH4. From the experiments, modeling, and simulations, and one pilot test conducted, it was found that there is a great potentiality of sequestrating CO2 in MHRs while recovering CH4. In addition, it was revealed that to produce more CH4, the nitrogen/hydrogen (N2/H2) mole fraction in the injector gas stream should be more significant than that in CO2, while to sequestrate more CO2, the CO2 mole fraction in the injector gas stream should be greater than the N2/H2 mole fraction. The CO2–mixture gases mole fraction ratio recommended from one successful pilot test conducted was 23:77 (CO2/N2), which revealed that approximately 60% of injected CO2 was sequestrated with 855 × 103 standard cubic feet of CH4 produced. The challenges identified in this review will urge researchers to explore suitable technologies to conduct more pilot tests and pave the way toward entire field operations on CO2 sequestration in MHRs toward decarbonization.

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Synergistic CH4 hydrate recovery and CO2 storage by coupling depressurization with CO2/N2 injection: A pilot-scale investigation

Niu,

Yao,

Yin

et al. 2023

Chemical Engineering Journal

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Evaluating the recovery potential of CH4 by injecting CO2 mixture into marine hydrate-bearing reservoirs with a new multi-gas hydrate simulator

Cited by 16 publications

References 17 publications

Liquid CO₂–CH₄ Hydrate Replacement Reaction above 281.15 K: Implication for CH₄ Recovery and CO₂ Sequestration in Marine Environments

Liquid CO₂–CH₄ Hydrate Replacement Reaction above 281.15 K: Implication for CH₄ Recovery and CO₂ Sequestration in Marine Environments

Critical Review on Carbon Dioxide Sequestration Potentiality in Methane Hydrate Reservoirs via CO₂–CH₄ Exchange: Experiments, Simulations, and Pilot Test Applications

Synergistic CH4 hydrate recovery and CO2 storage by coupling depressurization with CO2/N2 injection: A pilot-scale investigation

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Evaluating the recovery potential of CH4 by injecting CO2 mixture into marine hydrate-bearing reservoirs with a new multi-gas hydrate simulator

Cited by 16 publications

References 17 publications

Liquid CO2–CH4 Hydrate Replacement Reaction above 281.15 K: Implication for CH4 Recovery and CO2 Sequestration in Marine Environments

Liquid CO2–CH4 Hydrate Replacement Reaction above 281.15 K: Implication for CH4 Recovery and CO2 Sequestration in Marine Environments

Critical Review on Carbon Dioxide Sequestration Potentiality in Methane Hydrate Reservoirs via CO2–CH4 Exchange: Experiments, Simulations, and Pilot Test Applications

Synergistic CH4 hydrate recovery and CO2 storage by coupling depressurization with CO2/N2 injection: A pilot-scale investigation

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Liquid CO₂–CH₄ Hydrate Replacement Reaction above 281.15 K: Implication for CH₄ Recovery and CO₂ Sequestration in Marine Environments

Liquid CO₂–CH₄ Hydrate Replacement Reaction above 281.15 K: Implication for CH₄ Recovery and CO₂ Sequestration in Marine Environments

Critical Review on Carbon Dioxide Sequestration Potentiality in Methane Hydrate Reservoirs via CO₂–CH₄ Exchange: Experiments, Simulations, and Pilot Test Applications