Location of production zones with pressure gradient logging
Conference
·
· Trans. - Geotherm. Resour. Counc.; (United States)
OSTI ID:6740921
- Instituto Investigaciones Electricas, Mexicali, Mexico
The fact that geothermal wells produce from only a limited number of discrete fractures or feed zones often gives rise to confusing temperature and pressure logs. This is because the wells frequently are flowing from one zone to another while the measurements are made - even though the well is shut in. Interpretation of the temperature and pressure logs is then difficult unless the location of the feed zones can be determined and the internal flows recognized. Although this may often be determined by an experienced reservoir engineer there remains considerable room for ambiguity. A method is presented for locating the feed zones and simultaneously registering upward or downward flows by comparing the measured pressure gradient with the hydrostatic gradient calculated from a simultaneously run temperature log. Demonstration of the technique in Cerro Prierto is shown.
- DOE Contract Number:
- AT03-80SF11459
- OSTI ID:
- 6740921
- Report Number(s):
- CONF-811015-
- Conference Information:
- Journal Name: Trans. - Geotherm. Resour. Counc.; (United States) Journal Volume: 5
- Country of Publication:
- United States
- Language:
- English
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