Christopher Alan Angelo

US Patent:

7891427, Feb 22, 2011

Filed:

Apr 10, 2007

Appl. No.:

11/818941

Inventors:

David William Tuk - Fairfield CA, US
James Richard Ouimette - Bakersfield CA, US
James Lee Brink - Bakersfield CA, US
Christopher Angelo - Bakersfield CA, US

Assignee:

Chevron U.S.A. Inc. - San Ramon CA

International Classification:

E21B 43/24
E21B 36/00
E21B 47/06

US Classification:

166303, 16625006, 1662723, 7315213, 374136, 702 6

Abstract:

The invention includes a method for determining a steam injection schedule for a set of subsurface formation subsurface regions of an oil field, the method including the steps of determining a thermal maturity for each subsurface region of the set; calculating a latent heat target for each subsurface region according to the determined thermal maturity therefore; calculating a steam injection target for each subsurface region according to the calculated latent heat target therefore; determining the availability of steam for injection to the subsurface regions; and calculating a steam injection schedule for each subsurface region according to the determined steam availability and calculated steam injection targets for all subsurface regions of the set.