Lamberti Spa

Letizia Privitera

Giovanni Floridi

Luigi Merli

Pierangelo Pirovano

Giuseppe Li Bassi

Lorenzo Giardini

Erik Gallo

Massimo Cecchetto

Giuseppe LiBassi

Cleaning composition for use in cleaning wellbore walls, tubing or casing comprising: (i) from about 5% to 100% by weight of a mixture M consisting of from 10% to 50% by weight of acetophenone, from 5% to 30% by weight of butyl glycol and from 40% to 80% by weight of a surfactant, and (ii) from 0% to 95% by weight of water, in which (i)+(ii) sum up for at least 85% by weight of the cleaning composition; and process for cleaning a wellbore wall.

Process for the cleaning oil and gas wellbores

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.

Method of increasing lubricity of wellbore fluids

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Sumirago, Italy

Letizia Privitera