Organo-Clay Free Invert Emulsion Fluids
A method of drilling a subterranean formation includes providing an invert emulsion fluid comprising an oleaginous continuous phase; an internal phase comprising water; bentonite; and mixed metal layered hydroxides comprising hydroxide ions associated with at least two metal cations wherein one is d...
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Format: | Patent |
Sprache: | eng |
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Zusammenfassung: | A method of drilling a subterranean formation includes providing an invert emulsion fluid comprising an oleaginous continuous phase; an internal phase comprising water; bentonite; and mixed metal layered hydroxides comprising hydroxide ions associated with at least two metal cations wherein one is divalent and another is trivalent; and drilling the subterranean formation with the drilling fluid. Invert emulsion drilling fluids include an oleaginous continuous phase; an internal phase comprising water; sodium bentonite; and mixed metal layered hydroxides comprising hydroxide ions associated with at least two metal cations. |
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