Wells – Processes – Cementing – plugging or consolidating
Patent
1972-11-06
1976-08-10
Purser, Ernest R.
Wells
Processes
Cementing, plugging or consolidating
166247, E21B 3313, E21B 4300
Patent
active
039736296
ABSTRACT:
The injectivity profile of a heterogeneous formation and/or vertical conformance is improved by injecting an aqueous solution into the formation, the solution containing a polymer obtained as a product of radiation-induced polymerizatin of acrylamide and/or methacrylamide and acrylic acid, methacrylic acid, and/or alkali metal salts thereof. The polymerization is preferably carried out in a 10-60% aqueous solution with gamma radiation; the aqueous monomer solution preferably contains 25-99% acrylamide and 1-75% sodium acrylate. Immiscible, miscible, or miscible-like displacing processes can be used in conjunction with this invention.
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Gogarty William B.
Knight Bruce L.
Rhudy John S.
Ebel Jack E.
Herring Joseph C.
Hummel Jack L.
Purser Ernest R.
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