Lamberti Spa

Lorenzo Giardini

Giovanni Floridi

Giuseppe Li Bassi

Luigi Merli

Pierangelo Pirovano

Andrea Balestrini

Mauro Parini

Valentina Langella

Angelo Casiraghi

Barbara Biasotti

Mauro Riccaboni

Mauro Tenconi

Roberto Macchi

Letizia Privitera

Giuseppe LiBassi

Gianfranco Paganini

Enrico Cavo

Serena Gazzo

Non-aqueous suspensions of water-soluble polymers may comprise water-soluble polymers selected among polysaccharides, derivatives of polysaccharides, and mixtures thereof and may further comprise a carrier fluid, an emulsifier, and a suspending agent. The suspending agent may be obtained by polymerization of: (I) from 20 to 70% by weight of a monoethylenically unsaturated monomer containing a carboxylic group; (II) from 20 to 70% by weight of a (meth)acrylic acid ester; (III) from 0 to 3% by weight of a polyethylenically unsaturated monomer; and (IV) from 0 to 10% by weight of a nonionic acrylic associative monomer. The sum of I and II may represent at least 80% by weight of the monomer mixture.

Non-aqueous drift control suspensions

Non-aqueous suspension composition of water-soluble polymers and method for treating a subterranean formation comprising the step of placing an aqueous fluid containing the suspension composition into the subterranean formation.

Non-aqueous suspensions

The present invention relates to a method to inhibit gas hydrate formation in the field of crude oil and natural gas extraction, transportation and processing.

Gas hydrate inhibitors

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 of treating a portion of a subterranean formation comprising the injection of an aqueous fluid containing a modified polysaccharide bearing ethylenically unsaturated double bonds and an initiator of radical polymerization.

Method for treating subterranean formations

The present disclosure relates to a method of treating a portion of a subterranean formation comprising the use of an aqueous fracturing fluid containing a fast dissolving and easily dispersible unpunfied polygalactomannan ether.

Method of treating subterranean formations

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Casella, Italy

Lorenzo Giardini