Hydrophobically modified fluid loss additives and...

Details Hydrophobically modified fluid loss additives and... Hydrophobically modified fluid loss additives and...

C - Chemistry, Metallurgy

09

K

C09K 8/035 (2006.01) C09K 8/36 (2006.01) E21B 21/14 (2006.01)

Patent

CA 2654591

A wellbore fluid that includes an oleagninous continuous phase; a non- oleaginous phase; and a polymeric additive formed by reaction of at least one lipophilic epoxy modifier and at least one epoxide-reactive agent, wherein the at least one epoxide-reactive agent comprises at least one selected from lignins, tannins, biopolymers, starches, carboxy methyl cellulose, polyacrylates, polyacrylamides, and synthetic polymers is disclosed.

L'invention porte sur un fluide pour puits de forage qui comprend une phase continue oléagineuse ; une phase non-oléagineuse ; et un additif polymère formé par réaction d'au moins un modifiant époxy lipophile et d'au moins un agent apte à réagir avec un époxyde, le ou les agents capables de réagir avec un époxyde comprenant au moins l'un élément parmi les lignines, les tannins, les biopolymères, les amidons, la carboxy méthyl cellulose, les polyacrylates, les polyacrylamides et les polymères de synthèse.

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