Analytical solution for Joule-Thomson cooling during CO2 geo-sequestration in depleted oil and gas reservoirs
- Resource Type
- Journal Article
- Authors
- Source
- International Journal of Greenhouse Gas Control; 5; Other Information: Journal Publication Date: 2010
- Subject
- 54 ENVIRONMENTAL SCIENCES
58 GEOSCIENCES ANALYTICAL SOLUTION
DESIGN
EVALUATION
RESERVOIR PRESSURE
SCREENS
SIMULATION
SIMULATORS
- Language
- English
Mathematical tools are needed to screen out sites where Joule-Thomson cooling is a prohibitive factor for CO{sub 2} geo-sequestration and to design approaches to mitigate the effect. In this paper, a simple analytical solution is developed by invoking steady-state flow and constant thermophysical properties. The analytical solution allows fast evaluation of spatiotemporal temperature fields, resulting from constant-rate CO{sub 2} injection. The applicability of the analytical solution is demonstrated by comparison with non-isothermal simulation results from the reservoir simulator TOUGH2. Analysis confirms that for an injection rate of 3 kg s{sup -1} (0.1 MT yr{sup -1}) into moderately warm (>40 C) and permeable formations (>10{sup -14} m{sup 2} (10 mD)), JTC is unlikely to be a problem for initial reservoir pressures as low as 2 MPa (290 psi).