Method of increasing lubricity of wellbore fluids

US10611948B2 · kind B2 · utility

Assignee

• LAMBERTI SPA · IT

Inventors

• Erik Gallo · Cossato, IT
• Luigi Merli · Saronno, IT
• Pierangelo Pirovano · Cassano Magnago, IT
• Letizia PRIVITERA · Cassano Magnago, IT
• Massimo Cecchetto · Cassano Magnago, IT
• Giovanni Floridi · Novara, IT
• Giuseppe Li Bassi · Varese, IT

Key dates

• Filing date: Nov 6, 2015
• Grant date: Apr 7, 2020
• Expiry date: Nov 6, 2035

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K2208/34
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Method for increasing lubricity of a wellbore fluid comprising the following steps: i) preparing a water in oil microemulsion that contains insoluble particles of metal hydroxides and/or metal oxides in the inner aqueous phase, the insoluble particles being synthesized from their salt precursors in the water droplets of the microemulsion; ii) adding to the wellbore fluid the water in oil microemulsion; iii) injecting the wellbore fluid into a subterranean formation and iv) performing the drilling, completion or coiled tubing operations in the subterranean formation.