Method for reducing aqueous content of oil-based fluids

Details Method for reducing aqueous content of oil-based fluids Method for reducing aqueous content of oil-based fluids

C - Chemistry, Metallurgy

02

F

C02F 1/28 (2006.01) C02F 1/40 (2006.01)

Patent

CA 2674478

A method for reducing the aqueous content of oil-based drilling fluid includes contacting an invert emulsion wellbore fluid with a water absorbing polymer, interacting the water absorbing polymer with the weUborc fluid for a sufficient period of time so that the water absorbing pol>mer absorbs at least a portion of the aqueous fluid form the wellbore fluid: and separating the water absorbing potjmer containing the absorbed water from the wellbore fluid.

L'invention concerne un procédé de réduction de la teneur aqueuse de fluide de forage à base d'huile qui comprend la mise en contact d'un fluide de trou de forage en émulsion inverse avec un polymère absorbant l'eau, l'interaction du polymère absorbant l'eau avec le fluide de trou de forage pendant une période suffisante de sorte que le polymère absorbant l'eau absorbe au moins une partie du fluide aqueux du fluide de trou de forage et la séparation du polymère absorbant l'eau contenant l'eau absorbée du fluide de trou de forage.

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