Oil-based drilling fluid comprising a temperature-stable and...

Details Oil-based drilling fluid comprising a temperature-stable and... Oil-based drilling fluid comprising a temperature-stable and...

2007-07-24

2007-07-24

Sellers, Robert (Department: 1712)

Earth boring, well treating, and oil field chemistry

Earth boring

Contains organic component

C507S138000, C507S925000

Reexamination Certificate

active

10297478

ABSTRACT:
A temperature-stable, non eco-toxic oil-base well fluid that is particularly suitable for high pressure/high temperature drilling comprises an emulsification system comprising at least one superamide that may or may not be polyalkoxylated, optionally associated with a non-ionic co-surfactant. The oil-base well fluid comprising such a system can be used at temperatures of up to about 200° C. due to the production of highly temperature-stable reverse emulsions.

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