Geothermal down-well instrumentation (during drilling). Final report

Technical Report · Fri Jun 01 00:00:00 EDT 1979

DOI:https://doi.org/10.2172/5534523· OSTI ID:5534523

Kent, W H; Mitchell, P G; Row, R V

The object of the work was to investigate acoustic and electromagnetic telemetry methods which could be used as a basis for geothermal MWD systems. The emphasis has been on methods which employ the drill string and/or the formation surrounding the borehole as a signalling media. The investigations have been confined to the transmission characteristics of these media and have excluded the area of downwell measurements. Work performed includes: laboratory measurement of acoustic attenuation in drill pipe; field measurement of acoustic attenuation in drill pipe; measurements of drill string vibrations (drilling noise) during drilling; evaluation of drill string vibration dampers; modeling of electromagnetic propagation in the borehole region; and field measurements of attenuation of a downwell electromagnetic signal source. (MHR)

• Research Organization: Sperry Research Center, Sudbury, MA (USA)
• DOE Contract Number: EY-76-C-02-2817
• OSTI ID: 5534523
• Report Number(s): COO-2817-T1
• Country of Publication: United States
• Language: English

Related Subjects

15 GEOTHERMAL ENERGY
MWD SYSTEMS
TESTING
WELL LOGGING EQUIPMENT
ACOUSTIC MEASUREMENTS
BOREHOLES
DRILL BITS
DRILL PIPES
ELECTROMAGNETIC SURVEYS
NOISE
PROBES
SONIC LOGGING
TELEMETRY
WELL DRILLING
CAVITIES
COMMUNICATIONS
DATA TRANSMISSION
DRILLING
DRILLING EQUIPMENT
ELECTRICAL SURVEYS
EQUIPMENT
GEOPHYSICAL SURVEYS
WELL LOGGING
Geothermal Legacy