Hydraulic mining of tar sands

Details Hydraulic mining of tar sands Hydraulic mining of tar sands

E - Fixed Constructions

21

B

166/31

E21B 43/22 (2006.01) E21B 43/28 (2006.01) E21B 43/29 (2006.01)

Patent

CA 1169353

HYDRAULIC MINING OF TAR SANDS Abstract of the Disclosure Bitumen is separated and recovered from tar sands deposits by use of special hydraulic mining techniques. One or more jets of hydraulic mining fluid are projected by a nozzle or nozzles against a face of a tar sands deposit and advanced towards the face as the face erodes under the jetting action. Sand and bitumen separate, due to the jetting action, and are removed from the eroding area by the flow of hydraulic fluid which is cycled to a recovery zone for separation of fluid, sand, and bitumen. Fluid is recycled, bitumen recovered, and sand disposed of as backfill. Advance of a single nozzle is varied by lateral diversion to erode over a wider area of the face and increase the volume eroded by a single advancing jet.

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