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1. EP2029694 - HIGHLY BRANCHED POLYMERIC MATERIALS AS COATING ON WEIGHTING AGENTS

Office European Patent Office
Application Number 07798640
Application Date 15.06.2007
Publication Number 2029694
Publication Date 04.03.2009
Publication Kind A4
IPC
C09K 8/03
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
KMATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
8Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
02Well-drilling compositions
03Specific additives for general use in well-drilling compositions
C09K 8/36
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
KMATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
8Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
02Well-drilling compositions
32Non-aqueous well-drilling compositions, e.g. oil-based
36Water-in-oil emulsions
CPC
C09K 8/36
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
8Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
02Well-drilling compositions
32Non-aqueous well-drilling compositions, e.g. oil-based
36Water-in-oil emulsions
C09K 8/03
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
8Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
02Well-drilling compositions
03Specific additives for general use in well-drilling compositions
Applicants MI LLC
Inventors BALLARD DAVID ANTONY
Priority Data 2007071345 15.06.2007 US
80524606 20.06.2006 US
Title
(DE) HOCHVERZWEIGTE POLYMERMATERIALIEN ALS BESCHICHTUNG AUF GEWICHTUNGSMITTELN
(EN) HIGHLY BRANCHED POLYMERIC MATERIALS AS COATING ON WEIGHTING AGENTS
(FR) MATÉRIAUX POLYMÈRES FORTEMENT RAMIFIÉS EN TANT QUE REVÊTEMENT D'AGENTS ALOURDISSANTS
Abstract
(EN)
A wellbore fluid having at least two phases, the wellbore fluid including a fluid phase; and a solid phase including a powdered solid material coated with a polymer, wherein the polymer is the reaction product of a polyesteramide and a crosslinking agent is disclosed.

(FR)
L'invention concerne un fluide de puits de forage doté d'au moins deux phases, le fluide de puits de forage incluant une phase liquide et une phase solide incluant un matériau solide en poudre revêtu d'un polymère, le polymère étant le produit de réaction d'un polyesteramide et d'un agent de réticulation.

Also published as
NO20090271