Treating wells with ion-exchange-precipitated scale inhibitor

Details Treating wells with ion-exchange-precipitated scale inhibitor Treating wells with ion-exchange-precipitated scale inhibitor

1981-04-09

1983-07-19

Padgett, Benjamin R.

Wells

Processes

Material placed in pores of formation to treat resident...

166305R, 252 855B, E21B 4316, E21B 4325, C09K 300

Patent

active

043939384

ABSTRACT:
The scaling of a production well in a clay-containing reservoir is inhibited by injecting a scale inhibitor dissolved in an aqueous solution having a pH and ratio of monovalent-to-multivalent cations such that multivalent cation salts of the inhibitor are precipitated as a result of a cation-exchange within the reservoir.

REFERENCES:
patent: 3481400 (1969-12-01), Kerver
patent: 3483925 (1969-12-01), Slykar
patent: 3633672 (1972-01-01), Smith
patent: 4074755 (1978-02-01), Hill
patent: 4357248 (1982-11-01), Berkshire et al.

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