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Polymer gels
are effective for selectively blocking the flow of water to the wellbore,
without adversely affecting the ability of gas to flow to the wellbore.
This occurs because the polymer has a chemical affinity toward water-wet
rock. Click for more information about water
control in gas wells.

The use of
polymers to control water production in producing wells is well documented.
Results have been impressive. Treatments can reduce water production by
an order of magnitude and increase oil production by a comparable factor.
Click for more information about water control
in oil wells.

The primary
waterflood applications of Polymer Gels are injection profile modification
and control of directional channeling and the resulting early water breakthrough
in offset producing wells. Click
for more information about water flood enhancement.

In some circumstances,
Polymer Gels can be used successfully as an alternative to cement, or
in combination with cement, to squeeze casing leaks. A number of processes
have been developed for this application. Click
for more information about casing leaks.

An operator
had been unsuccessful in previous attempts to fish an anchor and 300'
of tubing from a depth of 7500', in an old well in Garvin County, Oklahoma,
because of several deep casing leaks that had been acting as thief zones,
preventing the circulation of fill-up out of the hole, A review of the
casing inspection log led to the decision to spot two 25 bbl slugs of
Leakblock-HD polymer over severe leaks noted at 5800' and 4200', respectively.
Click
for more information about workover applications

Click for more information about Polymer Gel use in the Kansas Arbuckle

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