Aqueous-based wellbore fluids

The invention provides a wellbore fluid which comprises an aqueous continuous phase and, dissolved in said aqueous continuous phase, at least one salt containing an imidazolium cation having at least 6 carbon atoms, and a method of carrying out a wellbore operation, which comprises introducing into...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Seddon, Kenneth Richard, Aston, Mark, Wassell, David Francis
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:The invention provides a wellbore fluid which comprises an aqueous continuous phase and, dissolved in said aqueous continuous phase, at least one salt containing an imidazolium cation having at least 6 carbon atoms, and a method of carrying out a wellbore operation, which comprises introducing into a wellbore in a clay-containing formation, a wellbore fluid according to the invention. The described salts are effective shale inhibitors.