Method and composition for acidizing subterranean formations

Details Method and composition for acidizing subterranean formations Method and composition for acidizing subterranean formations

E - Fixed Constructions

21

B

31/23

E21B 43/27 (2006.01) C08L 33/24 (2006.01) C09K 8/72 (2006.01) C09K 17/22 (2006.01)

Patent

CA 1073655

METHOD AND COMPOSITION FOR ACIDIZING SUBTERRANEAN FORMATIONS Abstract of the Disclosure Gelled acidic compositions suitable for either matrix acidizing or fracture-acidizing of subterranean formations, and methods of using com- positions in acidizing operations, are provided. Said compositions comprise water, a water-dispersible polymer of acrylamide, an acid, and an aldehyde capable of causing gelation of an aqueous dispersion of said polymer, said acid, and said aldehyde.

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