E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
31/16
E21B 43/22 (2006.01) C09K 8/88 (2006.01)
Patent
CA 1137289
TITLE. METHOD OF RECOVERING PETROLEUM FROM A SUBTERRANEAN RESERVOIR INCORPORATING POLYEPOXIDE CONDENSATES OF RESINOUS POLYALKYLENE OXIDE ADDUCTS AND POLYETHER POLYOLS ABSTRACT OF THE INVENTION The method of recovering petroleum from a subterranean reservoir preferably comprising the steps of: (1) introducing through an injection well a predeterminable amount of a poly- epoxide condensate of at least one of: (a) a polyalkylene oxide adduct of a fusible, water-insoluble organic aromatic hydrocarbon solvent-soluble synthetic resin, wherein said resin has from between about 4 to about 15 phenolic groups and is an alkyl or cycloaliphatic substituted phenol-aldehyde condensate of an ortho- or para-substituted phenol and an aldehyde, said condensate resin being thereafter further condensed with an alkylene oxide containing less than about five carbon atoms in an amount equal to at least one mole of alkylene oxide per phenolic moiety of said resin, the weight ratio of oxide to condensation product in a solvent-free state being between about 1-to-10 and about 10-to-1; and (b) a polyether polyol having the formula: Image wherein: A is an alkylene oxide group, -CiH2iO-; O is oxygen; i is a positive integer from 2 to about 10 inclusive, j is a positive integer no greater than about 100; k is a positive integer no greater than about 100; N is nitrogen; R1 is one of hydrogen, a monovalent hydrocarbon group containing less than about C11, or [ALH]; L is a positive integer no greater than about 100; R is a hydrocarbon moiety of a polyol, a primary or secondary amine t a primary or secondary polyamine, a primary or secondary amino alcohol, or hydrogen; and m + n is no greater than about 4 when R is other than hydrogen and one of m and n is zero and the other is unity when R is hydrogen, said polyepoxide condensate at about 25°C: (i) being less than about 1% by volume soluble in water and in isooctane; (ii) having a solubility parameter in the range of between about 6.9 and about 8.5; and (iii) spreading at the interface between distilled water and refined mineral oil to form a film having a thickness no greater than about 20 Angstroms at a film pressure of about 16 dynes per cm; (2) contacting said petroleum in said reservoir with an effective thin film forming amount of said polyepoxide condensate; and (3) introducing into the formation an aqueous injection medium to urge said petroleum toward and through a producing well. 1a
353233
Borden Ladner Gervais Llp
Magna Corporation
LandOfFree
Polyepoxide for petroleum recovery does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Polyepoxide for petroleum recovery, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polyepoxide for petroleum recovery will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1121834