Flow control apparatus and method

G - Physics – 05 – D

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137/138, 251/71

G05D 7/00 (2006.01) E21B 43/20 (2006.01) F15D 1/02 (2006.01)

Patent

CA 1199555

ABSTRACT Apparatus, and method, for controlling the flow of dilute solutions of polymers such as dilute aqueous solutions of partially hydrolyzed polyacryl- amides without causing any significant degradation of the polymer comprising the solutions. In one embodiment, the apparatus comprises a plurality of fixed restrictions connected in series with nipples having a larger internal diameter than the fixed restrictions. In another embodiment, the apparatus comprises at least one fixed restriction in communication with a flow control valve such as a needle valve.

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