Process for stabilized zirconium triethanolamine complex and...

Earth boring – well treating – and oil field chemistry – Well treating – Contains inorganic component other than water or clay

Reexamination Certificate

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C166S285000, C166S308300, C507S211000, C507S244000

Reexamination Certificate

active

07732383

ABSTRACT:
A process for preparing a stable zirconium triethanolamine cross-linking agent comprises contacting a solution of a zirconium triethanolamine complex with water at a temperature of 50° C. to 90° C. at a mole ratio of triethanolamine:zirconium in the range of 3.5:5.5 and at a mole ratio of water:zirconium in the range of 20:1 to 1:1. The stable zirconium triethanolamine complex can be used in a cross-linking composition. Further disclosed are methods to use the composition in oil field applications for hydraulic fracturing and plugging of permeable zones and leaks in subterranean formations.

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