Eni S.p.a.

Polimeri Europa S.p.a.

Versalis S.p.a.

Alessandra Belloni

Lucilla Del Gaudio

Paola Albonico

Thomas Paul Lockhart

Alberto Cesana

Rossella Bortolo

Davide Moscatelli

Roberto Tassinari

Giuseppe Leo

Claudio Riccardo Pratesi

Iole Moroni

A treatment fluid may be suitable for a hydrocarbon fluid extraction well. Such a treatment fluid may include a water-in-oil emulsion. The water-in-oil emulsion may include: an oily continuous phase; and an aqueous discontinuous phase comprising water and a plurality of particles comprising a hydrogel comprising a cationic polymer. The cationic polymer may include, in polymerized form, a monomer with one or more cationic groups. The cationic group may be a —N—RRRgroup, wherein R, R, and R, are independently H or a Cto Calkyl group.

Formulation for inhibiting water permeation in an extraction well of a hydrocarbon fluid from an underground reservoir

A method for inhibiting water permeation in an extraction well of a hydrocarbon fluid from an underground reservoir may include: supplying a water-in-oil emulsion including an oily continuous phase and an aqueous discontinuous phase containing a plurality of particles of at least one hydrogel containing a cationic polymer; and positioning the water-in-oil emulsion in contact with the underground reservoir. A treatment fluid for hydrocarbon fluid extraction wells may contain a water-in-oil emulsion including an oily continuous phase and an aqueous discontinuous phase containing a plurality of particles of at least one hydrogel containing a cationic polymer.

Method for inhibiting water permeation in an extraction well of a hydrocarbon fluid from an underground reservoir

A process for the recovery of heavy oil from an underground reservoir, comprising: injecting an oil-in-water nanoemulsion into one or more injection wells; recovering said heavy oil from one or more production wells. Said process is particularly advantageous for enhancing the recovery of heavy oils from underground reservoirs within the range of technologies for tertiary recovery, usually known as 'EOR' (Enhanced Oil Recovery').

Process for the recovery of heavy oil from an underground reservoir

Process for the preparation of a water-in-oil or oil-in-water nanoemulsion wherein the dispersed phase is distributed in the dispersing phase in the form of droplets having a diameter ranging from 1 to 500 nm, comprising:

Process for the preparation of water-in-oil and oil-in-water nanoemulsions

Process for the removal of deposits from an oil or gas well, and/or from surface structures, and/or from the equipment connected therewith, and/or from hydrocarbon-bearing formations, comprising:&#x2014;injecting at least one oil-in-water nanoemulsion into said oil or gas well, and/or surface structures, and/or equipment connected therewith, and/or hydrocarbon bearing formations; leaving said nanoemulsion in said oil or gas well, and/or surface structures, and/or equipment connected therewith, and/or hydrocarbon bearing formations, for a predetermined time.

Process for the removal of deposits from an oil or gas well, and/or from the surface structures, and/or from the equipment connected therewith, and/or from hydrocarbon bearing formations

Process for the preparation of a water-in-oil or oil-in-water nanoemulsion wherein the dispersed phase is distributed in the dispersing phase in the form of droplets having a diameter ranging from 1 to 500 nm, comprising: 1) the preparation of a homogeneous water/oil blend (I) characterized by an interface tension lower than 1 mN/m, comprising water in an amount of 30 to 70% by weight, at least two surface-active agents having a different HLB, selected from non-ionic, anionic, polymeric surface-active agents, said surface-active agents being present in such a quantity as to make the blend homogeneous; 2) the dilution of the blend (I) in a dispersing phase consisting of oil or water with the addition of a surface-active agent, selected from non-ionic, anionic, polymeric surface-active agents, the quantity of the dispersing phase and surface-active agent being such as to obtain a nanoemulsion having a HLB different from that of the blend (I).

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Cerro al Lambro, Italy

Alessandra Belloni