Precision directional drilling of hot-dry-rock geothermal production well EE-3
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/sup 0/ to the vertical. It reached an on-line depth of 15,292 feet and its bottom-hole temperature was 608/sup 0/F (320/sup 0/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 was accomplished within the required tolerances at a depth of 13,933 feet and a bottom-hole temperature of 580/sup 0/F (280/sup 0/C).
- Research Organization:
- Los Alamos National Lab., NM (USA); Grace, Shursen, Moore and Associates, Oklahoma City, OK (USA)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 5052721
- Report Number(s):
- LA-UR-82-1563; CONF-821007-9; ON: DE82018364
- Resource Relation:
- Conference: Annual goethermal resources council meeting, San Diego, CA, USA, 11 Oct 1982; Other Information: Portions of document are illegible
- Country of Publication:
- United States
- Language:
- English
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Drilling of hot-dry-rock geothermal-energy extraction well EE-3
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