Direct Measurement of In-Situ Water Saturation in Geothermal Rocks
Abstract/Contents
- Abstract
- In this study we present a methodology for the direct measurement of in-situ water saturation in geothermal rocks. An experiment was designed to bring a core sample to desired pressure and saturation conditions in order to establish a steam-water environment. X-ray CT scanning was used to measure the in-situ water saturation and the porosity. In CT scanning applications for rock characterization, one of the frequently encountered artifacts is the beam hardening effect. In this work we discuss the physical reasons behind the beam hardening effect and what can be done to minimize such effects. We applied the technique on a rock sample from The Geysers rock. We present the pressure transient for a blowdown experiment on The Geysers rock and plot saturation as a function of pressure. Possibly due to beam hardening effect, however, the results deviate from what is expected. We measured the porosity of The Geysers rock to be 0.03. We present a new design for the core holder to minimize beam hardening effects.
Description
| Type of resource | text |
|---|---|
| Date created | June 2006 |
Creators/Contributors
| Author | Dastan, Aysegul |
|---|---|
| Primary advisor | Horne, Roland N. |
| 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
- Dastan, Aysegul. (2006). Direct Measurement of In-Situ Water Saturation in Geothermal Rocks. Stanford Digital Repository. Available at: https://purl.stanford.edu/dr530wn2701
Collection
Master's Theses, Doerr School of Sustainability
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