C - Chemistry – Metallurgy – 09 – K
Patent
C - Chemistry, Metallurgy
09
K
C09K 8/04 (2006.01)
Patent
CA 2538771
A method of improving lubricity of an aqueous based drilling fluid composed of an aqueous base fluid and a weighting agent is disclosed; this method involves the addition of an effective amount of a phospholipid to substantially reduce the coefficient of friction when compared to the fluid absent the phospholipid. A method of drilling with such a fluid of improved lubricity, as well as corresponding drilling fluids themselves are also disclosed.
La présente invention a trait à un procédé permettant l'amélioration du pouvoir lubrifiant d'un fluide de forage aqueux constitué d'un fluide de base aqueux, et d'un alourdissant. Le procédé comprend l'addition d'une quantité efficace d'un phospholipide pour réduire sensiblement le coefficient de frottement par rapport à l'absence de phospholipide dans le fluide. De préférence, les phospholipides présentent la structure (I), dans laquelle : R et R' sont des groupes hydrocarbonés en C¿6?-C¿25?; et A est un anion pour opposer la charge cationique.
Davis Eric
Patel Arvind D.
Stamatakis Emanuel
Young Steven
Finlayson & Singlehurst
M-I L.l.c.
LandOfFree
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