Use of invert epoxy emulsions for wellbore stabilization

Details Use of invert epoxy emulsions for wellbore stabilization Use of invert epoxy emulsions for wellbore stabilization

C - Chemistry, Metallurgy

09

K

C09K 8/502 (2006.01) C09K 8/516 (2006.01) E21B 33/138 (2006.01)

Patent

CA 2606537

An invert emulsion wellbore fluid, including: a continuous oleaginous phase; a discontinuous non-oleaginous phase; a stabilizing agent; an oil-immiscible epoxy-based resin; and a hardening agent; wherein the wellbore fluid is a stable emulsion having a viscosity greater than 200 cps. In some embodiments, the hardening agent is an oil-miscible hardening agent; in other embodiments, the hardening agent is an oil-immiscible hardening agent.

Le présent extrait concerne un fluide de puits d'émulsion d'eau dans l'huile comprenant : une phase oléagineuse continue, une phase non oléagineuse discontinue, un agent stabilisant, une résine à base d'époxy non miscible à l'huile, et un agent durcisseur, dans quoi le fluide du forage est une émulsion stable ayant une viscosité supérieure à 200 cps. Dans certaines réalisations, l'agent durcisseur est un agent durcisseur miscible à l'huile; dans d'autres réalisations, l'agent durcisseur est un agent durcisseur non miscible à l'huile.

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