Design and Construction of a New Apparatus For Measuring Oil-Water Capillary Pressure in Unconsolidated Sand At Reservoir Conditions
Abstract/Contents
- Abstract
- Measurement of capillary pressure at elevated temperatures and pressures is usually beset with many experimental difficulties. In the past, relatively large pressures have been applied separately and independently to both phases, the capillary pressure being measured as the difference between the two pressures. This has necessitated the close control of both pressures; any instability or irregularity would lead to a proportionately great fluctuation in capillary pressure with correspondingly large changes in saturations and poor quality of the curve.A simple method has been devised and tested to eliminate this problem. Using a single-charge system to prevent all liquids from flashing to vapor, capillary pressure is applied to the fluids by raising or lowering one arm of a flexibly-connected, heavy-walled mercury manometer which also serves as a liquid pump. Liquid levels in the manometer pump, which is at room temperature, are measured accurately with a traveling microscope and allow precise calculation of small changes in saturation and pressure across the core.The capillary pressure cell for unconsolidated sand uses a relatively large porous diaphragm and a thin sample to speed up the displacement process. Pressure can be applied independently to the porous medium to study the effect of confining pressure on capillary pressure curves.Results are presented on a capillary displacement run made at 120F with 200 psig confining pressure and 50 psig pore pressure.
Description
| Type of resource | text |
|---|---|
| Date created | February 1986 |
Creators/Contributors
| Author | Coulter, Tim |
|---|---|
| Primary advisor | Brigham, William E. |
| Primary advisor | Marsden Jr., Sullivan S. |
| Degree granting institution | Stanford University, Department of Petroleum Engineering |
Subjects
| Subject | School of Earth Energy & Environmental Sciences |
|---|---|
| Subject | Stanford University Petroleum Research Institute |
| Genre | Thesis |
Bibliographic information
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Preferred citation
- Preferred Citation
- Coulter, Tim. (1986). Design and Construction of a New Apparatus For Measuring Oil-Water Capillary Pressure in Unconsolidated Sand At Reservoir Conditions. Stanford Digital Repository. Available at: https://purl.stanford.edu/rs039sc6223
Collection
Master's Theses, Doerr School of Sustainability
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