Development testing of a cornering water-jet drill

Conference · Fri Jan 01 04:00:00 EST 1982

OSTI ID:5034489

Shirey, D L; Love, S L

A drilling system is being developed which uses high pressure water jets to drill horizontal holes in a coal seam accessed through a vertical borehole. For underground coal gasification, these horizontal holes create linking paths between vertical process wells. Currently, the full-scale cornering drill system is undergoing above-ground evaluation tests in Albuquerque. An elevated test platform is being used to permit observation of the cornering and drilling mechanisms during operation. A simulated coal block serves as a convenient drilling target during these tests. Recorded hole location data have been compared with independently determined measurements. Test results to date indicate satisfactory performance of the major drill components. 10 figs.

• Research Organization: Sandia National Labs., Albuquerque, NM (USA)
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 5034489
• Report Number(s): SAND-82-0970C; CONF-820840-9; ON: DE82020354
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010404 -- Coal
Lignite
& Peat-- Gasification
42 ENGINEERING
420206* -- Engineering-- Mining & Drilling Equipment & Facilities-- (1980-1989)
BOREHOLE LINKING
COAL DEPOSITS
COAL GASIFICATION
COAL SEAMS
DRILLING
DRILLING EQUIPMENT
DRILLS
EQUIPMENT
GASIFICATION
GEOLOGIC DEPOSITS
HYDROGEN COMPOUNDS
IN-SITU GASIFICATION
IN-SITU PROCESSING
JET DRILLS
JETS
MINERAL RESOURCES
OXYGEN COMPOUNDS
PERFORMANCE TESTING
PROCESSING
RESOURCES
SIMULATION
TESTING
THERMOCHEMICAL PROCESSES
WATER