Mining or in situ disintegration of hard material – Tunnel recovery of fluid material
Patent
1978-12-14
1980-11-04
Pate, III, William F.
Mining or in situ disintegration of hard material
Tunnel recovery of fluid material
166289, 166290, 299 11, 299 13, E21C 4110
Patent
active
042316170
ABSTRACT:
Shale oil is recovered from an underground oil shale deposit by in-situ retorting of rubblized shale in a retort formed in the deposit. Oil shale in a volume in the range of ten to fifty percent of the volume of the retort is mined from the deposit and delivered to the surface to provide void space for the expansion of the shale that occurs on rubblization to form the in-situ retort. The oil shale delivered to the surface is retorted at the surface. After completion of the in-situ retorting, boreholes are drilled downwardly through the retorted shale and a pipe lowered through the borehole to a level near the bottom of the retort. Spent shale from the surface retorting operation is slurried and pumped into the lower end of the in-situ retort. Pumping is continued to squeeze the slurry into the fissures between blocks of spent shale. The slurry is delivered into successively higher levels of the retort and the pumping and squeezing operation repeated at each level. In a preferred operation, slurry discharged into the retort is allowed to set before discharging slurry into the retort at a higher level to avoid excessive hydrostatic pressures on the retort.
REFERENCES:
patent: 1919636 (1933-07-01), Karrick
patent: 2481051 (1949-09-01), Urens
patent: 3001776 (1961-09-01), Van Poollen
patent: 3391737 (1962-07-01), Havens
patent: 3459003 (1969-08-01), O'Neal
patent: 3588175 (1971-06-01), Whiting
patent: 3661423 (1972-05-01), Gavred
Larson Olaf A.
Matthews Charles W.
Gulf Oil Corporation
Pate III William F.
LandOfFree
Consolidation of in-situ retort does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Consolidation of in-situ retort, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Consolidation of in-situ retort will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1641773