Method and compositions for acidizing and fracturing wells

Details Method and compositions for acidizing and fracturing wells Method and compositions for acidizing and fracturing wells

E - Fixed Constructions

21

B

31/23

E21B 43/27 (2006.01) C09K 8/68 (2006.01) C09K 8/72 (2006.01)

Patent

CA 1199784

Abstract of the Disclosure Gelled-acid compositions suitable for matrix-acidizing or fracture-acidizing of subterranean formations and methods of using the composition in these operations are provided wherein the compositions comprise water, water-dispersible acrylamide-derived polymer, an acid and an aldehyde precursor which hydrolyzes in aqueous acid media to produce aldehydes which in turn react with the polymer and gels the resulting mixture.

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