USE OF HIGH RATIO AQUEOUS ALKALI SILICATES FOR PROFILE MODIFICATION, WATER CONTROL AND STABILIZATION
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United States of America Patent
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Issued Date -
Sep 27, 2012
app pub date -
Mar 20, 2012
filing date -
Mar 21, 2011
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Abstract
Soluble silicates are commonly used to block and strengthen permeable zones in subterranean formations. These applications include conformance for oil field, grouting for the construction industry and water shut-off for mining. It was discovered that set times and set properties could be improved by using novel, high ratio alkali silicates. Ratio being defined as the mol ratio of SiO2:Me2O, where Me is an alkali metal and is most commonly sodium or potassium (i.e. Na2O and K2O).
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