Method for enhanced recovery of oil from oil reservoirs

Details Method for enhanced recovery of oil from oil reservoirs Method for enhanced recovery of oil from oil reservoirs

2011-03-29

2011-03-29

Bates, Zakiya W. (Department: 3676)

Wells

Processes

Distinct, separate injection and producing wells

C166S275000, C166S300000

Reexamination Certificate

active

07913759

ABSTRACT:
The present invention provides a method for recovering oil from a subterranean reservoir using waterflooding, wherein the flooding fluid used in the waterflooding process comprises water and one or more ionic polyvinyl alcohol copolymers. The use of one or more ionic polyvinyl alcohol copolymers is expected to increase the recovery of oil by improving both the oil/water mobility ratio and the sweep efficiency in reservoirs with a high degree of heterogeneity.

REFERENCES:
patent: 2802785 (1957-04-01), Nowak et al.
patent: 3085063 (1963-04-01), Turbak
patent: 3421582 (1969-01-01), Fallgatter et al.
patent: 3757863 (1973-09-01), Clampitt et al.
patent: 4678032 (1987-07-01), Shu
patent: 4885105 (1989-12-01), Yang et al.
patent: 6818709 (2004-11-01), Viari
patent: 2003/0191030 (2003-10-01), Blair et al.
patent: 2005/0154120 (2005-07-01), Echt et al.
patent: 2006/0035042 (2006-02-01), Morken
patent: 2007/0034575 (2007-02-01), Tufano et al.
T. Moritani et al., Functional Modification of Poly (Vinyl Alcohol) by Copolymerization: II. Modification with a Sulfonate Monomer, Polymer, 1998, vol. 39:553-557.
E. Chiellini et al., Biodegradation of Poly (Vinyl Alcohol) Based Materials, Prog. Polym. Sci., 2003, vol. 28:963-1014.
U.S. Appl. No. 12/023,166, filed Jan. 31, 2008, Applicant: Scott Christopher Jackson.

Affiliated with

Also associated with

Rating

Method for enhanced recovery of oil from oil reservoirs does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for enhanced recovery of oil from oil reservoirs, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for enhanced recovery of oil from oil reservoirs will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2727604