ConocoPhillips
Hydrocarbon recovery with steam and solvent stages

Last updated:

Abstract:

A steam-assisted gravity drainage method includes a two stage solvent injection scheme, wherein steam plus solvent injection is followed by steam plus heavier-solvent injection. The two solvent injections improve recoveries of both the heavy oil and the injected solvent while limiting steam requirements, thus improving the economics of the method.

Status:
Grant
Type:

Utility

Filling date:

14 Nov 2013

Issue date:

28 Jun 2022