Method for controlling permeability of subterranean formations
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United States of America Patent
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Aug 11, 1981
Issued Date -
N/A
app pub date -
Sep 17, 1979
filing date -
Jul 8, 1977
priority date (Note) -
Expired
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Abstract
In the recovery of hydrocarbon materials from subterranean formations, the simultaneous production or loss of other fluids such as water is inhibited by the selective introduction into the subterranean porous structure of discrete spheroidal microgels of a water-swollen or water-swellable, crosslinked polymer such as crosslinked polyacrylamide.
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