In situ separation of bitumen from bitumen-bearing deposits

Details In situ separation of bitumen from bitumen-bearing deposits In situ separation of bitumen from bitumen-bearing deposits

1981-06-04

1983-02-08

Leppink, James A.

Wells

Processes

Separating material entering well

166267, 166274, 166304, E21B 4322, E21B 4340

Patent

active

043723837

ABSTRACT:
A method for in situ separation of bitumen from bitumen-bearing subterranean deposits includes the step of injecting a solvent composition into the deposit. The solvent composition must have an inverse critical solution temperature in a two-phase system with water and be selected from a particular group of amines that includes triethylamine and diisopropylamine. When the solvent composition contacts the bitumen in the deposit, the bitumen is dissolved by the solvent. Thereafter, the bitumen/solvent mixture is removed and separated into a bitumen component and a solvent component. The bitumen is thereafter processed to yield a usable petroleum product.

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patent: 4156463 (1979-05-01), Hall
patent: 4191252 (1980-03-01), Buckley et al.
patent: 4212353 (1980-07-01), Hall

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