Feed Zones in Geothermal Wellbores
Abstract/Contents
- Abstract
- The location of feed zones or permeable levels in geothermal reservoirs is of great importance when a reinjection program is being planned in a geothermal field, mainly because it is desire to know where the injected water is going to go into the formation. The location of feed zones can also help us to have a better understanding in the interpretation of downhole measurements. It has been found that when separate feed zones are present in a wellbore, fluid movement results and wellbore pressure and temperature profiles are not those corresponding to reservoirThis fluid movement is the result of two properties of geothermal reservoirs: one is the fractured nature of the reservoir and the other is the non-static reservoir fluid state. Most geothermal fields consist of fractured rock. A well draws its fluid from one, or at most, a few fractures. Often, one dominates. It is only at the depth of the dominant fracture where the well contacts the reservoir and truly reflects reservoir pressure. Pressure measurements taken elsewhere in the well reflect the only weight of the fluid column (water, two phase, steam) in the well. Therefore, if reliable information about the reservoir is desired, a better understanding of the location of the feed zones in a wellbore is necessary.
Description
| Type of resource | text |
|---|---|
| Date created | March 1981 |
Creators/Contributors
| Author | Castaneda, Mario |
|---|---|
| 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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- Use and reproduction
- User agrees that, where applicable, content will not be used to identify or to otherwise infringe the privacy or confidentiality rights of individuals. Content distributed via the Stanford Digital Repository may be subject to additional license and use restrictions applied by the depositor.
Preferred citation
- Preferred Citation
- Castaneda, Mario. (1981). Feed Zones in Geothermal Wellbores. Stanford Digital Repository. Available at: https://purl.stanford.edu/ck609fw9113
Collection
Master's Theses, Doerr School of Sustainability
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