QUATERNARY NITROGEN CONTAINING AMPHOTERIC WATER SOLUBLE POLYMERS AND THEIR USE IN DRILLING FLUIDS

The present invention generally relates to water based drilling fluid compositions which contain at least one viscosity builder and at least one rheological control agent wherein said rheological control agent is an amphoteric polymer, the cationic groups of said amphoteric polymer being quaternary...

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Bibliographische Detailangaben
Hauptverfasser:	VAN DER HORST, PETER M, WARREN, BRENT, VAN'T ZELFDE, THEODORUS A
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ADHESIVES CHEMISTRY DYES MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS PAINTS POLISHES
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Beschreibung
Zusammenfassung:	The present invention generally relates to water based drilling fluid compositions which contain at least one viscosity builder and at least one rheological control agent wherein said rheological control agent is an amphoteric polymer, the cationic groups of said amphoteric polymer being quaternary ammonium groups.