Analysis of Gas Gravity Drainage in Horizontal Wells
Abstract/Contents
- Abstract
- One of the major forces affecting the recovery of oil from reservoirs through horizontal wells is gravity. It has been found elsewhere that injection of inert gases such as nitrogen and carbon dioxide assists the gravity drainage process in reservoirs, and injecting inert gases through horizontal wells at the top of the reservoir has been found to maintain a stabilized gas front. In this study, the effect of gas injection through horizontal wells on the gravity-drainage process for non-water wet systems has been studied experimentally using a CT scanner. The movement of gas within the core was obtained using the CT scanner for different well configurations. In all cases, large amounts of oil were left unrecovered in the bottom of the core away from the producer. It was found that the staggered horizontal injector and producer well has the highest sweep efficiency among the cases studied. The cumulative oil production and the saturation profiles were compared to those obtained by simulation and the results were found to match well. A single conventional Corey-type model for relative permeability was sufficient to match all cases.
Description
| Type of resource | text |
|---|---|
| Date created | September 1998 |
Creators/Contributors
| Author | Venkataraman, Mahadevan |
|---|---|
| Primary advisor | Aziz, Khalid |
| 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
- Venkataraman, Mahadevan. (1998). Analysis of Gas Gravity Drainage in Horizontal Wells. Stanford Digital Repository. Available at: https://purl.stanford.edu/yt019js0079
Collection
Master's Theses, Doerr School of Sustainability
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