Lignosulfonate gels for sweep improvement in flooding...

Details Lignosulfonate gels for sweep improvement in flooding... Lignosulfonate gels for sweep improvement in flooding...

E - Fixed Constructions

21

B

31/19

E21B 43/20 (2006.01) C09K 8/88 (2006.01)

Patent

CA 1042647

ABSTRACT Improved sweep efficiency in oil-bearing reservoirs having high permeability streaks therein can be effected by first injecting a gel-forming solution consisting essentially of a dichromate activator in a lignosulfonate solution, modified by the presence of an alkali metal halide or an alkaline earth metal halide, such as, for example, sodium chloride or calcium chloride. This system has the advantage of high- temperature tolerance and the gel-forming characteristics thereof are not appreciably affected either by formation brine or CO2. Gel-forming solutions can be designed requiring from 10 to 2,000 hours to form a gel.

221979

Affiliated with

Also associated with

Rating

Lignosulfonate gels for sweep improvement in flooding... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Lignosulfonate gels for sweep improvement in flooding..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lignosulfonate gels for sweep improvement in flooding... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1006225