S.p.c.m. Sa

Snf Group

Snf S.a.s.

Poweltec

Veolia Water Solutions & Technologies Support

Cédrick Favero

Johann Kieffer

Olivier Braun

Jing Ling

Nicolas Gaillard

Thierry Leblanc

Benoît Legras

Nicolas Boisse

Frédéric Daguerre

Morgan Tizzotti

Bruno Tavernier

Lionel Lauber

Renaud Souzy

Bruno Giovannetti

Pierrick Cheucle

Alain Zaitoun

Arthur Marais

Alexandre Omont

Ludwig Gil

Mouloud Hendou

Camille Sagne

Christophe Rivas

Raphaël Doudin

Marc-Edouard Michel

Gilles Zakosek

Bernard Quillien

Jérôme Bouillot

Nazanin Salehi

Jun Gao

Bruno Michel

Thierry Bessenet

Julien Bonnier

Siham Telilel

Sebastien Coccolo

Emmanuelle Read

Thomas Divers

Morgan Tizzoti

Dennis Marroni

Amelia E Taylor

Christophe Roux

Olivier Ratel

Bruno Giovanneti

Kemin Xie

Alexis Guillard

Elvire Tognisso

Thomas Brichart

Siham Telitel

Thomas Boursier

Jean-Sébastien Fruchart

Pïerrick Cheucle

Morgan Tiizzotti

Benoit Legras

Johann Kiefer

Flavien Gathier

Sébastien Coccolo

Aurélien Duchadeau

The invention relates to a novel sulfobetaine monomer and to a process for the preparation thereof, advantageously by reaction between a vinyl-amine compound and a vinyl-sulfonic acid compound, preferably in the presence of a solubilizing agent. The invention also relates to the (co)polymers obtained from this novel type of sulfobetaine monomer, and to the use thereof, for example as a flocculant, dispersing agent, thickening agent, absorbent agent or friction-reducing agent.

Sulfobetaine monomers, process for preparing same, and uses thereof

An injection fluid for hydraulic fracturing including at least one synthetic water-soluble polymer with a weight average molecular weight greater than or equal to 1 million daltons, the fluid being prepared according to a method including preparing, by radical polymerization an invert emulsion including between 15% and 40% by weight of the polymer, between 20% and 60% by weight of water and at least one hydrocarbon-based solvent, distilling the invert emulsion to obtain a dispersion including between 40% and 60% by weight of particles of the polymer, less than 10% by weight of water and at least one hydrocarbon-based solvent, and diluting the dispersion with 1% to 15% by weight of an aqueous solution including between 20% and 60% by weight of salts.

Dispersion of water-soluble polymer for hydraulic fracturing

A method for obtaining N-vinylformamide including the reaction between an acetaldehyde and a formamide, one of the two, preferably both, being at least partially renewable and non-fossil. A bio-sourced N-vinylformamide monomer, a bio-sourced polymer obtained by polymerization including at least N-vinylformamide monomer, and the use of the polymer in various technical fields.

Method for obtaining bio-sourced N-vinylformamide

The invention relates to a composition for preparing injection fluid in oil and gas recovery comprising an inverse emulsion of an associative water-soluble polymer A comprising at least one hydrophobic monomer or hydrophobic macromonomer, and solid particles of a water-soluble polymer B, said polymer B being preferably associative. The invention also relates to a method of treating a portion of subterranean formation comprising providing the composition, preparing an injection fluid with at least the composition, introducing the injection fluid into portion of the subterranean formation. The composition is particularly useful to prepare fracturing fluid in fracturing operations.

Composition for oil and gas recovery

A continuous process for filtering a suspension of 2-acrylamido-2-methylpropane sulfonic acid crystals by means of a rotary pressure filter equipped with a drum, a surface of which is provided with cells covered with a filter medium, the drum rotating within a fixed concentric cylinder comprising at least three zones sealed from each other, respectively a filtration zone, a washing zone and a discharge zone, each zone opening onto the cells.

Process for filtering 2-acrylamido-2-methylpropane sulfonic acid

The present invention relates to a method for modifying the water permeability of a subterranean formation which comprises oil, said method comprising at least the following steps:

Method for modifying the water permeability of a subterranean formation

Process for the production of 2-dimethylaminoethyl (meth)acrylate in multiple stage batch reactions involving the recycling of the catalyst (DBTO) in subsequent reaction, the addition a certain amount of fresh catalyst to the recycled catalyst, the use of said catalysts in the subsequent reaction, and wherein the volume decrease due to azeotropic distillation is compensate in order to keep the volume constant in the reactor during the reaction by the continuous addition of a composition comprising methyl(meth)acrylate and dimethylaminoethanol.

Method for producing 2-dimethylaminoethyl (meth)acrylate

The invention relates to a new dialkyl tin oxide catalyst composition and its use for the synthesis of amino alkyl (meth)acrylates by transesterification from an alkyl (meth)acrylates and an amino alcohol, and especially 2-dimethylaminoethyl (meth)acrylate. The invention also relates to polymers made with quaternized amino alkyl (meth)acrylates and use of said polymers in water treatment, sludge dewatering, papermaking process, agriculture, cosmetic and detergency composition, textile process, oil and gas recovery process such as enhanced oil recovery, fracturing, mining operation such as tailings treatment.

Dialkyl tin oxide composition and process for producing 2-dimethylaminoethyl (meth)acrylate

The invention relates to a method for modifying the water permeability of a subterranean formation, comprising at least the following steps:

A method is provided for enhanced oil recovery in a subterranean carbonate formation by injecting an aqueous composition having at least one water-soluble polymer containing acrylamidopropyltrimethylammonium chloride (APTAC). The water soluble polymer used in the method is an amphoteric polymer and contains at least one anionic monomer, wherein the number of acrylamidopropyltrimethylammonium chloride units in the water-soluble polymer is between 20 and 99.9 mol percent relative to total number of moles of monomer units of the water-soluble polymer. The method is advantageous because it improves the efficacy of enhanced oil recovery in subterranean carbonate formations using specific water-soluble polymers.

Method for enhancing oil recovery in a subterranean carbonate formation using an injected amphoteric water-soluble polymer

The invention relates to a method for the purification of acrylamido-2-methyl-2-propanesulphonic acid comprising the following successive steps: The invention also relates to a polymer obtained from acrylamido-2-methyl-2-propanesulphonic acid crystals or its salts, obtained according to such a method, and to the use of said polymer in oil and gas recovery, in water treatment, in sludge treatment, in manufacturing paper, in construction, in mining, in cosmetic formulation, in detergent formulation, in textile making, or in agriculture.

Method for the purification of acrylamido-2-methyl-2-propanesulphonic acid

Process for preparing water-soluble polymers in powder form by polymerization of water-soluble monoethylenically unsaturated monomers comprising the successive steps:

Process for the preparation of polyacrylamides using an eco-friendly lubricant composition

The invention relates to an inverse polymer emulsion having the particular feature of auto-inverting without any need for the use of an inverting agent and containing a polymer of at least one water-soluble monomer and at least one LCST macromonomer. The invention also relates to the use of the inverse emulsion in the fields of the oil and gas industry, water treatment, slurry treatment, paper manufacturing, construction, mining, cosmetics, textiles, detergents or agriculture.

Auto-invertible inverse polymer emulsion

The present invention relates to a water-soluble polymer obtained by polymerization of at least a 2-dimethylaminoethyl acrylate monomer and/or its salts, in presence of at least a tocopherol and/or its derivatives, or a tocotrienol and/or its derivatives, and its uses.

2-dimethylaminoethyl acrylate polymers and their preparation method

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Andrezieux Boutheon, France

Cédrick Favero