Self-breakable yield point enhancer for oil based drilling mud

Details Self-breakable yield point enhancer for oil based drilling mud Self-breakable yield point enhancer for oil based drilling mud

2011-06-07

2011-06-07

Gulakowski, Randy (Department: 1766)

Earth boring, well treating, and oil field chemistry

Earth boring

Contains organic component

C507S138000, C528S291000

Reexamination Certificate

active

07956014

ABSTRACT:
The present invention relates to a liquid, self-breakable, temporary viscosifier agent (yield point enhancer) for oil based drilling muds, obtained by reacting one or more dicarboxylic fatty acids with a secondary dialkanolamine and thereafter with a tertiary tialkanolamine, and to oil based drilling muds containing it.

REFERENCES:
patent: 4330339 (1982-05-01), Nimerick
patent: 4816551 (1989-03-01), Oehler et al.
patent: 4822507 (1989-04-01), Kanamori et al.
patent: 5681915 (1997-10-01), Lechner et al.
patent: 5705663 (1998-01-01), Brock et al.
patent: 2004/0038829 (2004-02-01), Thaemlitz

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