Method of using lignosulfonate-acrylic acid graft copolymers as

Details Method of using lignosulfonate-acrylic acid graft copolymers as Method of using lignosulfonate-acrylic acid graft copolymers as

1992-06-23

1993-10-12

Novosad, Stephen J.

Wells

Processes

Distinct, separate injection and producing wells

166273, 252 8554, E21B 4322

Patent

active

052516989

ABSTRACT:
A sacrificial agent method employing lignosulfonate-acrylic acid graft copolymers to reduce chemical loss to the formation during hydrocarbon recovery by surfactant system injection and sweep through an underground formation.

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patent: 4721161 (1988-01-01), Richardson et al.
patent: 4836940 (1989-06-01), Alexander
patent: 5009268 (1991-04-01), Kalfoglou

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