Permeable zone and leak plugging using cross-linking composition comprising zirconium triethanolamine complex
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United States of America Patent
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Sep 14, 2010
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Aug 16, 2007
app pub date -
Feb 14, 2006
filing date -
Feb 14, 2006
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Abstract
A method for plugging a permeable zone or leak in a subterranean formation comprises introducing into the formation a cross-linkable organic polymer and a cross-linking composition which comprises a zirconium triethanolamine complex, a tetra(hydroxyalkyl)ethylenediamine, water and optionally, a polyol. The method can be used for cross-linking organic polymers over a wide range of pH. By varying the composition and optionally adding a delay agent, the method provides flexibility in rate of cross-linking.
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