Increasing the clay dissolving capability of a buffer-regulated

Details Increasing the clay dissolving capability of a buffer-regulated Increasing the clay dissolving capability of a buffer-regulated

1976-12-27

1978-05-23

Guynn, Herbert B.

Wells

Processes

Placing fluid into the formation

252 855C, E21B 4327

Patent

active

040905632

ABSTRACT:
The clay dissolving capability of an aqueous mud acid solution of weak acid, weak acid salt and fluoride salt (of the type described in the E. A. Richardson U.S. Pat. No. 3,889,753) can be increased by including in the solution a partial salt of an aminopolyacetic acid chelating or complex-forming agent.

REFERENCES:
patent: 2803306 (1957-08-01), Hower
patent: 2877848 (1959-03-01), Case
patent: 3481404 (1969-12-01), Gidley
patent: 3543856 (1970-12-01), Knox et al.
patent: 3797575 (1974-03-01), Dill et al.
patent: 3826312 (1974-07-01), Richardson et al.
patent: 3828854 (1974-08-01), Templeton et al.
patent: 3889753 (1975-06-01), Richardson

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