An Analytical Model for Simulating Heavy-oil Recovery by Cyclic Steam Injection Using Horizontal Wells
Abstract/Contents
- Abstract
- In this investigation, existing analytical models for cyclic steam injection and oil recovery are reviewed and a new model applicable to horizontal wells is proposed. A new flow equation for oil production during cyclic steaming of horizontal wells is developed. The model accounts for the gravity-drainage of oil along the steam-oil interface and through the steam zone. Oil viscosity, effective permeability, geometry of the heated zone, porosity, mobile oil saturation, and thermal diffusivity of the reservoir influence the flow rate of oil in the model. The change in reservoir temperature with time is also modeled, and it results in the expected decline in oil production rate during the production cycle as the reservoir cools. Wherever appropriate, correlations are incorporated to minimize data requirements. A limited comparison to numerical simulation results agrees well indicating that essential physics are successfully captured.Cyclic steaming appears to be a systematic method for heating a cold reservoir provided that a relatively uniform distribution of steam is obtained along the horizontal well during injection. A sensitivity analysis shows that the process is robust over the range of expected physical parameters.
Description
| Type of resource | text |
|---|---|
| Date created | June 1999 |
Creators/Contributors
| Author | Diwan, Utpal |
|---|---|
| Primary advisor | Kovscek, Anthony R. |
| Degree granting institution | Stanford University, Department of Petroleum Engineering |
Subjects
| Subject | School of Earth Energy & Environmental Sciences |
|---|---|
| Genre | Thesis |
Bibliographic information
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Preferred citation
- Preferred Citation
- Diwan, Utpal. (1999). An Analytical Model for Simulating Heavy-oil Recovery by Cyclic Steam Injection Using Horizontal Wells. Stanford Digital Repository. Available at: https://purl.stanford.edu/pt274km1220
Collection
Master's Theses, Doerr School of Sustainability
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