How the Use of Tem Changed the Resistivity Model of Oxarfjordur Temperature Field from an Earlier DC Survey - a Case History
- Key words
- DC survey, TEM survey, Resistivity model
- Location
- Oxarfjordur, Iceland
- Conference
- World Geothermal Congress
- Year
- 2010
- Session
- 13. Geophysics
- Language
- English
- Paper number
- 1350
Full text
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Abstract
A resistivity survey in Oxarfjordur temperature field in north Iceland, performed by the use of the Schlumberger (DC) method showed a resistivity structure interpreted as a high temperature reservoir with temperatures exceeding 240°C. Drilling into the field however did not confirm an active high temperature field nor temperatures exceeding 190 °C. A TEM (Transient Electro Magnetic) survey explained the structure with a better resolution at depth, as a geothermal fracture dominated field within sedimentary surroundings at temperatures as high as 190°C
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