System for producing a uniform rubble bed for in situ processes

Details System for producing a uniform rubble bed for in situ processes System for producing a uniform rubble bed for in situ processes

1981-04-10

1983-07-05

Purser, Ernest R.

Mining or in situ disintegration of hard material

Tunnel recovery of fluid material

175 53, 175391, 175393, 299 90, E21C 4110

Patent

active

043914675

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.

REFERENCES:
patent: 2775439 (1956-12-01), McCarthy
patent: 2800316 (1957-07-01), Henderson
patent: 3460867 (1969-08-01), Cameron et al.
patent: 3765722 (1973-10-01), Crumb
patent: 3967689 (1976-07-01), Cherrington

Affiliated with

Also associated with

Rating

System for producing a uniform rubble bed for in situ processes does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with System for producing a uniform rubble bed for in situ processes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System for producing a uniform rubble bed for in situ processes will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1437137