Drilling fluids containing an alkali metal formate

Details Drilling fluids containing an alkali metal formate Drilling fluids containing an alkali metal formate

C - Chemistry, Metallurgy

09

K

C09K 8/28 (2006.01) C09K 8/32 (2006.01) C09K 8/36 (2006.01)

Patent

CA 2438465

A drilling fluid or mud is described wherein the drilling fluid contains at least one alkali metal formate or monovalent carboxylic acid salt. The drilling fluid preferably further contains at least one emulsifier or surfactant and at least one hydrocarbon-based fluid. The drilling fluids of the present invention can contain other conventional ingredients. The present invention permits drilling fluids to be essentially solids free due to to the use of the alkali metal formate.

L'invention concerne un liquide de forage ou des boues, ledit liquide de forage contenant au moins un formate de métal alcalin ou un sel d'acide carboxylique monovalent. Le liquide de forage contient de préférence en outre au moins un émulsifiant ou un tensioactif et au moins un fluide à base d'hydrocarbure. Les liquides de forage de la présente invention peuvent contenir d'autres ingrédients. L'invention permet d'avoir des liquides de forage sensiblement exempts de solides, en raison de l'utilisation du formate de métal alcalin.

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