Method for preparing dilute polymer solutions

Details Method for preparing dilute polymer solutions Method for preparing dilute polymer solutions

1985-06-19

1986-07-29

Schofer, Joseph L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

523318, 523348, 524555, 524827, 5253294, C08L 3326

Patent

active

046031545

ABSTRACT:
A method for preparing dilute aqueous polymer solutions, especially dilute aqueous partially hydrolyzed polyacrylamide solutions, for use in secondary and tertiary oil recovery processes. The method comprises producing a concentrated polymer solution in a polymerization reactor and diluting the resulting gel-like, relatively high concentration polymer solution to obtain a free-flowing, relatively low concentration polymer solution by means of a staged dilution process. In each stage, an aqueous diluent is combined with the polymer solution to produce a nonuniform mixture which is maintained in a vessel in a quiescent state until the mixture becomes uniform. The stages are repeated as many times as necessary until the free-flowing, relatively low concentration polymer solution is obtained.

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patent: 4439334 (1984-03-01), Borchardt
patent: 4508858 (1985-04-01), Luetzelschwab

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