Process for reducing the production of water in oil wells
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United States of America Patent
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Mar 13, 2007
Grant Date -
Jul 20, 2006
app pub date -
Mar 14, 2006
filing date -
May 25, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A process is described for reducing the production of water in oil wells which comprises the injection into 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 0.70 to 0.98; m ranges from 0.30 to 0.02; n+m=1; X.sub.1 and X.sub.2, the same or different, are selected from H and CH.sub.3; R.sub.1, R.sub.2, R.sub.3, the same or different, are selected from C.sub.1 C.sub.10 monofunctional hydrocarbyl groups; and x ranges from 2 to 5.
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