(METH)ACRYLIC COPOLYMERS AS RHEOLOGICAL ADDITIVES IN DRILLING FLUIDS AND DRILLING FLUIDS COMPRISING SUCH COPOLYMERS

The invention relates to a drilling fluid in the form of a water-in-oil (W/O) emulsion comprising at least components (A) to (D), wherein component (D) is at least one (meth)acrylic copolymer, which contains at least one of structural units (D1), (D2) and (D3) to introduce at least one hydroxyl and/...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	STEINMETZ, Alan, ZODY, George, ADAMS, Justin, BERNERT, Dominika, RUDNER, Jasmin, NAGELSDIEK, René
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ADHESIVES CHEMISTRY COMPOSITIONS BASED THEREON DYES MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS ORGANIC MACROMOLECULAR COMPOUNDS PAINTS POLISHES THEIR PREPARATION OR CHEMICAL WORKING-UP
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