High-temperature directional drilling turbodrill

Technical Report · Mon Feb 01 04:00:00 EST 1982

DOI:https://doi.org/10.2172/5564079· OSTI ID:5564079

Neudecker, J W; Rowley, J C

The development of a high-temperature turbodrill for directional drilling of geothermal wells in hard formations is summarized. The turbodrill may be used for straight-hole drilling but was especially designed for directional drilling. The turbodrill was tested on a dynamometer stand, evaluated in laboratory drilling into ambient temperature granite blocks, and used in the field to directionally drill a 12-1/4-in.-diam geothermal well in hot 200/sup 0/C (400/sup 0/F) granite at depths to 10,5000 ft.

• Research Organization: Los Alamos National Lab., NM (USA)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 5564079
• Report Number(s): LA-9231-MS; ON: DE82009712
• Country of Publication: United States
• Language: English

Related Subjects

15 GEOTHERMAL ENERGY
150901* -- Geothermal Engineering-- Drilling Technology & Well Hardware
DESIGN
DIRECTIONAL DRILLING
DRILL BITS
DRILLING
DRILLING EQUIPMENT
DRILLS
DYNAMOMETERS
ENERGY SYSTEMS
EQUIPMENT
GEOTHERMAL SYSTEMS
GEOTHERMAL WELLS
GRANITES
Geothermal Legacy
HIGH TEMPERATURE
HOT-DRY-ROCK SYSTEMS
IGNEOUS ROCKS
MEASURING INSTRUMENTS
OPERATION
PERFORMANCE
PLUTONIC ROCKS
ROCKS
TESTING
WELLS