Flow Characteristics and Relative Permeability Functions for Two Phase Geothermal Reservoirs From a One Dimensional Thermodynamic Model
Abstract/Contents
- Abstract
- Theoretical flow characteristics for a fractured geothermal reservoir have been obtained by modelling the system with a one dimensional thermodynamic model. The model includes the effect of heat transfer from the rock. to the fluid and irreversible processes, such as friction, by using an effective isentropic efficiency term. By approching the problem in this manner it has not been necessary to define the flow geometry or to define such parameters as the two phase friction factor.By comparing the theoretical characteristics generated by the model with field data it is possible t o estimate the flow area and an effective fracture width for the two phase flow into the wellbore from the reservoir. It is also possible to calculate under what conditions choking will occur in the reservoir and hence, the maximum exploitation rate for the reservoir/well system.Field examples are included to illustrate how the flow area and effective fracture width are calculated. It was further found that certain characteristics of the f i e l d flow data could be explained by the concept of choked or critical flow.From the data generated by the model it was possible to derive a unique set of relative permeability curves, independent of the reservoir temperature. They were derived as functions of the in place liquid saturation and could therefore be used in present geothermal simulators. They have been compared with a number of other relative permeability functions and it is concluded that the relative permeability functions developed here are probably more consistent for fractured geothermal reservoirs.
Description
| Type of resource | text |
|---|---|
| Date created | August 1982 |
Creators/Contributors
| Author | Menzies, Anthony J. |
|---|---|
| Primary advisor | Gudmundsson, Jon S. |
| Advisor | Horne, Roland N. |
| Degree granting institution | Stanford University, Department of Petroleum Engineering |
Subjects
| Subject | School of Earth Energy & Environmental Sciences |
|---|---|
| Subject | Stanford Geothermal Program |
| Genre | Thesis |
Bibliographic information
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Preferred citation
- Preferred Citation
- Menzies, Anthony J. (1982). Flow Characteristics and Relative Permeability Functions for Two Phase Geothermal Reservoirs From a One Dimensional Thermodynamic Model. Stanford Digital Repository. Available at: https://purl.stanford.edu/fy535yb8979
Collection
Master's Theses, Doerr School of Sustainability
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