Viscoelastic polymer bank with improved mobility control

Details Viscoelastic polymer bank with improved mobility control Viscoelastic polymer bank with improved mobility control

1978-12-26

1981-04-21

Novosad, Stephen J.

Wells

Processes

Distinct, separate injection and producing wells

166275, 252 855D, E21B 4322

Patent

active

042627460

ABSTRACT:
A viscoelastic polymer such as polyacrylamide is first prehydrated in an aqueous fluid having a low degree of hardness and the prehydrated viscoelastic polymer solution is mixed with hard brine to provide a polymer bank with improved mobility control. This improved mobility control is obtained by mixing the hard brine with the prehydrated viscoelastic polymer at high volume ratios of hard brine to the polymer.

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Jeanes et al., "Polysaccharide B-1459: A New Hydro Colloid Polyelectrolyte Produced from Glucose by Bacterial Fermentation", Journal of Applied Polymer Science, vol. 5, No. 17, pp. 519-526, (1961).

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