Polymer solutions for use in oil recovery containing a complexing agent for multivalentions
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United States of America Patent
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May 5, 1981
Grant Date -
N/A
app pub date -
Jun 20, 1979
filing date -
Jun 23, 1978
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A process for preparing a polymer solution for use in 'polymer based' oil recovery comprises adding to water the polymer in the form of an aqueous solution, a dry particulate solid or a suspension in a non-aqueous liquid, and also adding a complexing agent for multivalent ions and, where the solution so formed does not already contain an alkali metal salt, subsequently incorporating therein an alkali metal salt. The polymer may be a substantially cell-free microbial polysaccharide gum, a polyacrylamide or a cellulose derivative.
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