Functionalized clay compositions for aqueous based drilling...

Details Functionalized clay compositions for aqueous based drilling... Functionalized clay compositions for aqueous based drilling...

2011-08-02

2011-08-02

Kugel, Timothy J. (Department: 1763)

Earth boring, well treating, and oil field chemistry

Well treating

Contains organic component

C507S129000

Reexamination Certificate

active

07989402

ABSTRACT:
An aqueous drilling fluid which contains a diquaternary ammonium cation functionalized clay which provides a substantially constant rheological profile, with respect to salinity, when incorporated into well drilling fluids. A clay/organic chemical composition includes: (a) montmorillonite clay and (b) one or more diquaternary ammonium compounds. A further aspect of the invention is a well drilling process which employs a drilling fluid containing the diquaternary ammonium cation functionalized clay described hereafter.

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