Closed Chamber Well Test Analysis by Superposition of the Constant Pressure Cumulative Influx Solution to the Radial Diffusivity Equation
Abstract/Contents
- Abstract
- A computer program was developed to model the closed chamber test. Superposition of the constant pressure cumulative influx solution was utilized to avoid the problems associated with direct solution of the governing partial differential equations. The model was tested for the ability to generate a slug test response and then used to illustrate the difference between the slug test and closed chamber test. A sensitivity study was conducted by varying tool and reservoir parameters from a control base case. Unlike the slug test, initial fluid level, initial chamber gas pressure, and produced fluid gravity greatly influence the closed chamber pressure response. As a result, the slug test dimensionless group tD / CD is ineffective in collapsing the closed chamber curves. Assuming ideal chamber gas behavior did to not significantly influence the closed chamber pressure response. The developed superposition model was used t o generate dimensionless type curves for a particular tool and reservoir situation. A log-log plot of pD versus to, analogous to the late time slug test format of Ramey et. al (1976), yields the greatest sensitivity to skin analysis.
Description
| Type of resource | text |
|---|---|
| Date created | February 1985 |
Creators/Contributors
| Author | Simmons, Jeffrey F. |
|---|---|
| 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
- Simmons, Jeffrey F. (1985). Closed Chamber Well Test Analysis by Superposition of the Constant Pressure Cumulative Influx Solution to the Radial Diffusivity Equation. Stanford Digital Repository. Available at: https://purl.stanford.edu/yn624nk6045
Collection
Master's Theses, Doerr School of Sustainability
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