Earth boring – well treating – and oil field chemistry – Earth boring – Contains organic component
Reexamination Certificate
2009-04-24
2011-11-22
Figueroa, John J (Department: 1765)
Earth boring, well treating, and oil field chemistry
Earth boring
Contains organic component
C507S138000, C507S139000
Reexamination Certificate
active
08062997
ABSTRACT:
Methods for enhancing the stability of ester based drilling fluids for drilling, running casing in, and/or cementing a borehole in a subterranean formation are disclosed, as well as improved ester based drilling fluids for use at high temperatures. The advantages of the invention are realized by inhibiting hydrolysis of the esters in the drilling fluid by adding a monomeric or polymeric carbodiimide hydrolysis inhibitor to the drilling fluid.
REFERENCES:
patent: 7262152 (2007-08-01), Monfreux-Gaillard et al.
patent: 2005/0126785 (2005-06-01), Todd
patent: 2006/0065396 (2006-03-01), Dawson et al.
patent: 2006/0175059 (2006-08-01), Sinclair et al.
patent: 2007/0039732 (2007-02-01), Dawson et al.
Figueroa John J
Halliburton Energy Service,s Inc.
Roddy Craig W.
Tripp Karen B.
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