The Significance of CO2 Solubility in Deep Subsurface Environments
Abstract/Contents
- Abstract
- This paper considers the idea of CO2 injection into the subsurface with the goal of sequestering carbon dioxide. This may occur in a couple of ways: in the traditional sense, carbon capture and sequestration would involve direct injection into the ground with the goal of sequestering as much as possible. In addition, the concept of CO2 sequestration has been modified in within the past ten years to consider circulating CO2 through the subsurface in order to simultaneously produce heat and sequester CO2 via fluid loss. To use current terminology, the carbon dioxide would be used as the working fluid in an Engineered Geothermal Systems (EGS). This scenario would have the two-fold advantage of providing renewable electricity generation with simultaneous CO2 sequestration via subsurface fluid loss. In order to entertain this idea seriously, it is necessary to consider the interactions between CO2 and the reservoir rock and connate fluid. Laboratory experiments and theoretical work were designed to investigate thermodynamic effects that may occur when solubility is taken into account. A core-scale experiment measured relative permeabilities in the two-phase system, a micromodel experiment qualitatively observed the dynamic dissolution phenomenon, and theoretical analyses put the findings in context and provided a framework to predict results under varied conditions. The purpose of this research was to analyze and quantify the magnitude of dissolution effects through laboratory and theoretical work. An additional goal was to evaluate the time and length-scales of dissolution and diffusion effects relative to standard hydrodynamic behavior.
Description
| Type of resource | text |
|---|---|
| Date created | June 2011 |
Creators/Contributors
| Author | Pistone, Sarah |
|---|---|
| Primary advisor | Horne, Roland N. |
| Degree granting institution | Stanford University, Department of Energy Resources Engineering |
Subjects
| Subject | School of Earth Energy & Environmental Sciences |
|---|---|
| Genre | Thesis |
Bibliographic information
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Preferred citation
- Preferred Citation
- Pistone, Sarah. (2011). The Significance of CO2 Solubility in Deep Subsurface Environments. Stanford Digital Repository. Available at: https://purl.stanford.edu/rh712qk7553
Collection
Master's Theses, Doerr School of Sustainability
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- brannerlibrary@stanford.edu
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