Process for reducing the production of water in oil wells
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United States of America Patent
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Feb 28, 2006
Grant Date -
Jul 29, 2004
app pub date -
May 13, 2002
filing date -
May 25, 2001
priority date (Note) -
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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; x1 is selected from H and CH3; R1, R2 the same or different, are selected from C1-C10 monofunctional hydrocarbyl groups ##STR1##
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