Method for removing polymer plugging in well boreholes

Details Method for removing polymer plugging in well boreholes Method for removing polymer plugging in well boreholes

1988-05-11

1989-10-03

Suchfield, George A.

Wells

Processes

Chemical inter-reaction of two or more introduced materials

166270, 166274, 1663051, 166312, 252 8552, E21B 4322, E21B 4327

Patent

active

048710229

ABSTRACT:
A method of removing polymeric material from injection and producing wells in which an aqueous medium containing, chlorine dioxide or sodium chlorite is introduced into the well and maintained in contact with the polymeric material for a period of time sufficient to degrade the polymeric material to a desired degree and allow enhanced injectivity of polymer flooding medium into the injection well or enhanced production from a producing well.

REFERENCES:
patent: 1999146 (1935-04-01), Ambrose et al.
patent: 3482635 (1969-12-01), Pasini, III
patent: 3482636 (1969-12-01), Crowe
patent: 3556221 (1971-01-01), Haws et al.
patent: 3938594 (1976-02-01), Rhudy et al.
patent: 4741401 (1988-05-01), Walles et al.

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