ORGANOPHILIC CLAYS AND DRILLING FLUIDS CONTAINING THEM

The organophilic clay comprises a smectite-type clay ion exchanged with quaternary ammonium ions, where at least 75 mol-% of said quaternary ammonium ions are bis-(2-hydroxypropyl)-dimethylammonium fatty acid esters and at least 90 % of the fatty acid moieties of the bis-(2-hydroxypropyl)-dimethylam...

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Hauptverfasser: Hisamoto, Miyako, Smith, Sarah, Davis, Gary, Parrish, Dennis
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creator Hisamoto, Miyako
Smith, Sarah
Davis, Gary
Parrish, Dennis
description The organophilic clay comprises a smectite-type clay ion exchanged with quaternary ammonium ions, where at least 75 mol-% of said quaternary ammonium ions are bis-(2-hydroxypropyl)-dimethylammonium fatty acid esters and at least 90 % of the fatty acid moieties of the bis-(2-hydroxypropyl)-dimethylammonium fatty acid esters have a structure RC(O) with group R being a linear alkyl or alkenyl group containing from 9 to 21 carbon atoms. The organophilic clay is useful for thickening oil based compositions, in particular drilling fluids for drilling oil or gas wells, comprising an oil phase.
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subjects ADHESIVES
CHEMISTRY
DYES
MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
PAINTS
POLISHES
title ORGANOPHILIC CLAYS AND DRILLING FLUIDS CONTAINING THEM
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