Composition and method for fluid loss control in acid...

Details Composition and method for fluid loss control in acid... Composition and method for fluid loss control in acid...

E - Fixed Constructions

21

B

31/21

E21B 43/26 (2006.01) C09K 8/68 (2006.01) C09K 8/76 (2006.01) E21B 43/27 (2006.01)

Patent

CA 1279469

ABSTRACT OF THE DISCLOSURE Novel compositions and method of controlling fluid loss during acid fracturing employing a gelled acid which is crosslinked by Fe(III) upon spending of the acid. The crosslinking is later reversed by means of a reducing agent which is activated as the pH of the spent acid rises.

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