Method for treating a subterranean formation

Earth boring – well treating – and oil field chemistry – Well treating – Contains organic component

Reexamination Certificate

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C166S307000, C166S312000

Reexamination Certificate

active

06911418

ABSTRACT:
A method for increasing the permeability of a subterranean formation is disclosed in which an amount of an aqueous mixture, sufficient to increase the permeability of the formation, comprising specified aminopolycarboxylic anionic species, and specified cationic species, is injected into the formation matrix.

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patent: WO 99/27225 (1999-06-01), None
patent: 01/83639 (2001-11-01), None
The Influence of Transport and Reaction on Wormhole Formation in Carbonate Porous Media: A Study of Alternative Stimulation Fluids By Christopher N. Fredd (University of Michigan, 1998).
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Alternative Stimulation Fluids and their Impact on Carbonate Acidizing, SPE 31074 (1996); by Fredd, C.N. and Fogler, H.S.
Chelating Agents as Effective Matrix Stimulation Fluids for Carbonate Formations, SPE 37212 (1997) by C.N.Fredd and H.S.Fogler.
The Existence of an Optimum Damköhler Number for Matrix Stimulation of Carbonate Formations, SPE 38167 (1997) C.N.Fredd, R.Tjia, and H.S.Fogler.

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