Low conductivity water based wellbore fluid

Details Low conductivity water based wellbore fluid Low conductivity water based wellbore fluid

C - Chemistry, Metallurgy

09

K

C09K 8/12 (2006.01) E21B 21/06 (2006.01)

Patent

CA 2727093

A low electrical conductivity water-based wellbore fluid for use in drilling wells through a formation containing a clay which swells in the presence of water, said wellbore fluid that includes an aqueous base fluid; and a polymeric non-ionic tertiary amine is disclosed. Methods of using such fluids are also disclosed.

Linvention concerne un fluide de forage à base deau à faible conductivité électrique destiné à une utilisation dans des puits de forage dans une formation contenant de l'argile qui gonfle en présence d'eau, ledit fluide de forage comprenant un fluide à base aqueuse ; et une amine tertiaire non ionique polymère. L'invention concerne également des procédés d'utilisation desdits fluides.

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