Wells – Processes – Distinct – separate injection and producing wells
Patent
1976-07-15
1977-09-27
Novosad, Stephen J.
Wells
Processes
Distinct, separate injection and producing wells
166273, 166302, E21B 4322
Patent
active
040505138
ABSTRACT:
Polymer flooding is an effective means of increasing the sweep efficiency of a displacement process for recovering petroleum from a subterranean, petroleum containing formation; however, most polymers suitable for use in flooding operations hydrolyze or otherwise decompose at temperatures above about 150.degree. F to 200.degree. F, and the temperature of many subterranean petroleum-containing formations is in excess of 150.degree. F-200.degree. F. Polymers may be employed in tertiary recovery in formations whose temperatures are greater than the temperature stability limit of the polymer if the formation temperature is first reduced by introducing an aqueous fluid such as water at a temperature substantially below the temperature limit of the polymer into the formation for a period of time sufficient to reduce the formation temperature to a value at or below the temperature tolerance level of the polymer.
REFERENCES:
patent: 3437141 (1969-04-01), Brandner et al.
patent: 3858656 (1975-01-01), Flournoy et al.
patent: 3924682 (1975-12-01), Wu et al.
patent: 3946812 (1976-03-01), Gale et al.
Brown Alfred
Huang Wann-Sheng
Shum Yick-Mow
Wu Ching H.
Novosad Stephen J.
Park Jack H.
Ries Carl G.
Texaco Inc.
Whaley Thomas H.
LandOfFree
Method of treating a high temperature formation to permit the us 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 of treating a high temperature formation to permit the us, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of treating a high temperature formation to permit the us will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1809092