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