Method for delaying the setting of and acid-settable liquid in a

Details Method for delaying the setting of and acid-settable liquid in a Method for delaying the setting of and acid-settable liquid in a

1973-11-23

1976-03-09

Rzucidlo, Eugene C.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

166295, 260 296R, 260 67FA, C08G 400

Patent

active

039430847

ABSTRACT:
In an improved method for the treatment of a permeable formation or zone adjacent to the bore of an oil well, the setting time of an acid-settable liquid is predictably delayed by use of a novel catalyst system. The method provides an effective means for controlling the reduction of the permeability of the formation or zone in a single stage treatment by dissolving the catalyst in the liquid and introducing the solution into the formation. The catalyst system comprises a mixture of a suitable acid-releasing compound and a base.

REFERENCES:
patent: 2399055 (1946-04-01), Nordlander
patent: 2471600 (1949-05-01), Adams Jr. et al.
patent: 2499275 (1950-02-01), McWhorter
patent: 3209826 (1965-10-01), Young
patent: 3597386 (1971-08-01), Brabander
patent: 3700604 (1972-10-01), Metil
patent: 3759327 (1973-09-01), Carnes

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