C - Chemistry – Metallurgy – 01 – B
Patent
C - Chemistry, Metallurgy
01
B
C01B 33/44 (2006.01) C04B 35/58 (2006.01) C09K 8/22 (2006.01)
Patent
CA 2657863
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 further aspect of the invention is a well drilling process which employs a drilling fluid containing the diquaternary ammonium cation functionalized clay described hereafter. A clay/organic chemical composition that comprises: (a) montmorillonite clay and (b) one or more diquaternary ammonium compounds.
L'invention concerne un fluide de forage aqueux contenant une argile fonctionnalisée cationique d'ammonium diquaternaire qui présente un profil rhéologique sensiblement constant, par rapport à la salinité, lorsqu'elle est incorporée à des fluides de forage de puits. Selon un autre aspect de l'invention, un procédé de forage de puits utilise un fluide de forage contenant l'argile fonctionnalisée cationique d'ammonium diquaternaire décrite dans le descriptif. Cette argile/composition chimique organique comprend : (a) une argile Montmorillonite et (b) un ou plusieurs composés d'ammonium diquaternaire.
Dino David
Foley James Michael
Elementis Specialties Inc.
Sim & Mcburney
LandOfFree
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