Lignosulfonates carboxylated with chloroacetic acid as additives

Details Lignosulfonates carboxylated with chloroacetic acid as additives Lignosulfonates carboxylated with chloroacetic acid as additives

1979-07-05

1981-05-19

Guynn, Herbert B.

Wells

Processes

Distinct, separate injection and producing wells

166274, 252 855D, E21B 4322

Patent

active

042678862

ABSTRACT:
A process for producing petroleum from subterranean formations is disclosed wherein production from the formation is obtained by driving a fluid from an injection well to a production well. The process involves injecting via the injection well into the formation an aqueous solution of lignosulfonates carboxylated with chloroacetic acid as a sacrificial agent to inhibit the deposition of surfactant and/or polymer on the reservoir matrix. The process may best be carried out by injecting the lignosulfonates carboxylated with chloroacetic acid into the formation through the injection well mixed with either a polymer, a surfactant solution and/or a micellar dispersion. This mixture would then be followed by a drive fluid such as water to push the chemicals to the production well.

REFERENCES:
patent: 3700031 (1972-10-01), Germer et al.
patent: 3777817 (1973-12-01), Feuerbacher et al.
patent: 3797574 (1974-03-01), Feuerbacher et al.
patent: 4172497 (1979-10-01), Kalfoglou

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