Water-based drilling fluid

Details Water-based drilling fluid Water-based drilling fluid

C - Chemistry, Metallurgy

09

K

C09K 8/12 (2006.01)

Patent

CA 2677550

A water based drilling fluid contains as additive one or more alkyl ethoxylates having the formula RO(CH2CH2O)nH; wherein: R is a C16-22alkyl group (preferably R is aliphatic and more preferably R is linear), and n is an integer in the range 2-30. The fluid further contains one or more viscosifying agents, and is substantially clay-free.

L'invention concerne un fluide de forage à base aqueuse contenant comme additif, un ou plusieurs alkyl-éthoxylates de formule RO(CH2CH2O)nH ; dans laquelle : R est un groupe alkyle en C16-22 (de préférence, R est un groupe aliphatique et de manière davantage préférée, R est linéaire), et n est un nombre entier de l'ordre de 2 à 30. Le fluide contient en outre un ou plusieurs agents de viscosification et est substantiellement dépourvu d'argile.

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