Degree
Doctor of Philosophy (PhD)
Department
Petroleum Engineering
Document Type
Dissertation
Abstract
This dissertation presents a comprehensive study on modeling and simulation for
methane hydrate production and CO2 sequestration. The research focuses on pore-
scale and reservoir-scale modeling techniques to understand the dynamics of gas
hydrate dissociation, the associated risks of subsidence, and the potential for CO2
storage in deep-sea environments.
This dissertation begins with an investigation into pore-scale modeling. Specif-
ically, a detailed pore network model was developed to simulate the processes of
methane hydrate dissociation and formation. However, the numerical simulations
revealed that assuming an isothermal process for hydrate formation and dissociation
is not physically realistic. Consequently, the results obtained from this pore-scale
study were deemed unsuitable for integration into the larger reservoir-scale modeling
efforts.
The second part addresses reservoir-scale subsidence during methane hydrate pro-
duction, with a focus on developing and testing mitigation strategies. This work is
crucial for ensuring the stability and safety of hydrate-bearing sediments.
The final chapters investigate the feasibility of CO2 sequestration in both deep-
sea environments and depleted methane hydrate reservoirs. The research outcomes
provide significant insights into the effectiveness and stability of CO2 storage in these
settings.
Overall, this dissertation contributes to the understanding of methane hydrate
production and CO2 sequestration, offering practical implications for energy security
and climate change mitigation.
iii
Date
4-3-2025
Recommended Citation
Sambo, Chico, "MODELING AND SIMULATION OF METHANE AND CO2 HYDRATES IN POROUS MEDIA" (2025). LSU Doctoral Dissertations. 6763.
https://repository.lsu.edu/gradschool_dissertations/6763
Committee Chair
Dr. Gupta