METHOD FOR EXTRACTING BITUMEN FROM AN AGED OIL SANDS ORE STREAM
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United States of America Patent
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N/A
Issued Date -
Jun 25, 2015
app pub date -
Dec 17, 2014
filing date -
Dec 19, 2013
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The present invention provides a method for extracting bitumen from an aged oil sands ore stream, the method comprising at least the steps of:
- (a) providing an aged oil sands ore stream, the oil sands ore stream containing connate water;(b) contacting the aged oil sands ore stream with a solvent thereby obtaining a solvent-diluted oil sand slurry;(c) filtering the solvent-diluted oil sand slurry obtained in step (b), thereby obtaining a solids-depleted stream and a solids-enriched stream;(d) removing solvent from the solids-depleted stream obtained in step (c) thereby obtaining a bitumen-enriched stream;wherein the solvent as used in step (b) comprises a non-aqueous solvent; andwherein the connate water in the aged oil sands ore stream as provided in step (a) has a sulphate concentration of at least 50 ppmv, as determined by ASTM D516.
First Claim
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