Precision Directional Drilling of Hot Dry Rock Geothermal Production Well EE-3
- Key words
- Drilling; Hot dry Rock; USA; New Mexico; Directional Drilling; Injections; Fractures; Wellbores; Temperatures; Turbine Motors
- Location
- Fenton Hill, New Mexico; Valles Caldera, New Mexico
- Conference
- Geothermal Resources Council Transactions
- Year
- 1982
- Session
- Drilling; Directional drilling; HDR/EGS; Downhole motors
- Language
- English
Abstract
The deviated directional drilling of the hot dry rock (HDR) geothermal production well EE-3 (Energy Extraction No. 3) was successfully completed on August 1981. The injection well, EE-2, previously had been drilled with its lower part at an inclination of 35° to the vertical. It reached an online depth of 15,292 feet and its bottom hole temperature was 608°F (320°C). The production well EE-3 was required to be drilled 1200 feet (370 m) above and parallel to the injection well. This necessitated high precision, controlled trajectory directional drilling operations. The directional drilling of EE-3 way accomplished within the required tolerances at a depth of 13,933 feet and a bottom hole temperature of 580°F (280°C).
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