System for producing a uniform rubble bed for in situ processes
Abstract
A method and a cutter for producing a large cavity filled with a uniform bed of rubblized oil shale or other material, for in situ processing. A raise drill head (72) has a hollow body (76) with a generally circular base and sloping upper surface. A hollow shaft (74) extends from the hollow body (76). Cutter teeth (78) are mounted on the upper surface of the body (76) and relatively small holes (77) are formed in the body (76) between the cutter teeth (78). Relatively large peripheral flutes (80) around the body (76) allow material to drop below the drill head (72). A pilot hole is drilled into the oil shale deposit. The pilot hole is reamed into a large diameter hole by means of a large diameter raise drill head or cutter to produce a cavity filled with rubble. A flushing fluid, such as air, is circulated through the pilot hole during the reaming operation to remove fines through the raise drill, thereby removing sufficient material to create sufficient void space, and allowing the larger particles to fill the cavity and provide a uniform bed of rubblized oil shale.
- Inventors:
-
- Berkeley, CA
- Issue Date:
- Research Org.:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- OSTI Identifier:
- 864604
- Patent Number(s):
- 4391467
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Classifications (CPCs):
-
E - FIXED CONSTRUCTIONS E21 - EARTH DRILLING E21B - EARTH DRILLING, e.g. DEEP DRILLING
E - FIXED CONSTRUCTIONS E21 - EARTH DRILLING E21C - MINING OR QUARRYING
- DOE Contract Number:
- W-7405-ENG-48
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- producing; uniform; rubble; bed; situ; processes; method; cutter; cavity; filled; rubblized; oil; shale; material; processing; raise; drill; head; 72; hollow; 76; circular; base; sloping; upper; surface; shaft; 74; extends; teeth; 78; mounted; relatively; holes; 77; formed; peripheral; flutes; 80; allow; drop; below; pilot; drilled; deposit; reamed; diameter; means; produce; flushing; fluid; air; circulated; reaming; operation; remove; fines; removing; sufficient; create; void; space; allowing; larger; particles; fill; provide; hollow shaft; shale deposit; upper surface; oil shale; void space; larger particles; rubblized oil; drill head; cutter teeth; create sufficient; /299/175/
Citation Formats
Galloway, Terry R. System for producing a uniform rubble bed for in situ processes. United States: N. p., 1983.
Web.
Galloway, Terry R. System for producing a uniform rubble bed for in situ processes. United States.
Galloway, Terry R. Sat .
"System for producing a uniform rubble bed for in situ processes". United States. https://www.osti.gov/servlets/purl/864604.
@article{osti_864604,
title = {System for producing a uniform rubble bed for in situ processes},
author = {Galloway, Terry R},
abstractNote = {A method and a cutter for producing a large cavity filled with a uniform bed of rubblized oil shale or other material, for in situ processing. A raise drill head (72) has a hollow body (76) with a generally circular base and sloping upper surface. A hollow shaft (74) extends from the hollow body (76). Cutter teeth (78) are mounted on the upper surface of the body (76) and relatively small holes (77) are formed in the body (76) between the cutter teeth (78). Relatively large peripheral flutes (80) around the body (76) allow material to drop below the drill head (72). A pilot hole is drilled into the oil shale deposit. The pilot hole is reamed into a large diameter hole by means of a large diameter raise drill head or cutter to produce a cavity filled with rubble. A flushing fluid, such as air, is circulated through the pilot hole during the reaming operation to remove fines through the raise drill, thereby removing sufficient material to create sufficient void space, and allowing the larger particles to fill the cavity and provide a uniform bed of rubblized oil shale.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sat Jan 01 00:00:00 EST 1983},
month = {Sat Jan 01 00:00:00 EST 1983}
}