Process for reducing the production of water in oil wells

Details Process for reducing the production of water in oil wells Process for reducing the production of water in oil wells

2006-02-28

2006-02-28

Suchfield, George (Department: 3676)

Wells

Processes

Cyclic injection then production of a single well

C166S295000, C166S305100, C507S222000, C507S225000, C507S229000, C523S130000

Reexamination Certificate

active

07004253

ABSTRACT:
A process is described for reducing the production of water in oil wells, with temperatures of up to (90° C.), which comprises the injection in the formation around the well of an aqueous solution of one or more polymers selected from those having general formula (I) wherein: n ranges from (0.40) to (0.70), preferably from (0.5) to (0.65); m ranges from (0.15) to (0.65), preferably from (0.3) to (0.5); p ranges from (0.02) to (0.20), preferably from (0.05) to (0.10); n+m+p=1; x1is selected from H and CH3; R1, R2the same or different, are selected from C1–C10monofunctional hydrocarbyl groups

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