Water-based polymer drilling fluid and method of use

Details Water-based polymer drilling fluid and method of use Water-based polymer drilling fluid and method of use

C - Chemistry, Metallurgy

09

K

C09K 8/04 (2006.01) E21B 21/00 (2006.01) E21B 21/14 (2006.01)

Patent

CA 2624834

A water-based drilling fluid comprises a polymer which is a non-ionic polymer or an anionic polymer. The polymer can be a polyacrylamide. The fluid is used for drilling subterranean formations containing heavy crude oil and bitumen- rich oil sands, and may comprise additional fluid components.

L'invention concerne un liquide de forage en polymère à base d'eau, qui comprend un polymère non ionique ou un polymère anionique. Le polymère peut être un polyacrylamide. Le liquide est utilisé pour forer des formations souterraines contenant du pétrole brut lourd et des grès bitumineux, et peut comprendre des constituants liquides complémentaires.

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