Buffered steam drive oil recovery process

Details Buffered steam drive oil recovery process Buffered steam drive oil recovery process

E - Fixed Constructions

21

B

166/31

E21B 43/24 (2006.01)

Patent

CA 1258421

BUFFERED STEAM DRIVE OIL RECOVERY PROCESS ABSTRACT Steam injected into a subterranean formation comprises a liquid phase and a vapor phase. Oil displacement by the liquid phase is not as efficient as the oil displacement in the portion of the formation contacted by the vapor phase. The effectiveness of the oil recovery process in the portion of the formation being contacted by the liquid phase is increased by contacting that portion of the formation with an aqueous solution containing from 0.005 to 2.0 percent by weight of an alkalinity agent, preferably sodium hydroxide and from 0.01 to 5.0 percent by weight of a buffering agent, preferably sodium carbonate. The mixture of sodium hydroxide and sodium carbonate may be co-mixed with the steam introduced into the formation, or may be introduced as a separate liquid containing both the sodium carbonate and sodium hydroxide, or separate slugs containing sodium carbonate and sodium hydroxide may be injected.

517271

Affiliated with

Also associated with

Rating

Buffered steam drive oil recovery process does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Buffered steam drive oil recovery process, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Buffered steam drive oil recovery process will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1237823