Patent Number: 6,305,472

Title: Chemically assisted thermal flood process

Abstract: An enhanced oil recovery process uses an injectant containing water and an additive. The additive is an organic compound having a total of 1 to 10 carbons and at least one functional group containing a heteroatom. The additive is present at a concentration of between about 0.01% and about 20% by weight of the composition. The injectant is injected at a temperature of between about F. to about F. Hot water flooding with the additive provides enhanced oil recovery in medium to heavy oil reservoirs.

Inventors: Richardson; William C. (Bellaire, TX), Kibodeaux; Kenneth R. (Katy, TX)

Assignee: Texaco Inc.

International Classification: C09K 8/58 (20060101); C09K 8/592 (20060101); E21B 43/16 (20060101); E21B 43/34 (20060101); E21B 43/24 (20060101); E21B 43/40 (20060101); E21B 043/16 (); E21B 043/24 ()

Expiration Date: 10/23/2018