Limitations of the Dp/q Approximation in the Analysis of Pressure Drawdown Interference with Variable Flow Rate
Abstract/Contents
- Abstract
- Conventional drawdown interference analysis assumes that the producing well flows at a constant flow rate. Several methods have been developed to handle variation of flow rate during the test.In this work, the method of superposition of continuously changing rates was used to generate dimensionless pressure solutions based on the instantaneous rate for a variety of functional forms of rate variation.Curves relating dimensionless pressure , dimensionless time, and a correlation parameter defined by reservoir properties and rate variation were constructed. Error curves were constructed that can be used as diagnostic tools to determine the validity of the Dp/q approximation.When the method of stepwise change in rate is t o be used in analyzing the data, it was shown that the pressure data at the end of the step period should be used. An equation has been developed to determine the duration of the flow rate in each step change to provide desired accuracy.
Description
| Type of resource | text |
|---|---|
| Date created | June 1979 |
Creators/Contributors
| Author | Al-Yousef, Hasan Y. |
|---|---|
| Primary advisor | Cinco-Ley, Heber |
| 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
- Al-Yousef, Hasan Y. (1979). Limitations of the Dp/q Approximation in the Analysis of Pressure Drawdown Interference with Variable Flow Rate. Stanford Digital Repository. Available at: https://purl.stanford.edu/vf157zf7232
Collection
Master's Theses, Doerr School of Sustainability
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