Total Compagnie Francaise Des Petroles

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Total Compagnie Franciase Des Petroles

Jean-Pierre P Binon

Jean-Jacques Fery

Marie-Christine P Leblanc

Josiane A Durrieu

Gerard G Provin

An emulsifying agent according to formula (I) having a molecular weight of between 3000 and 10000: ##STR1## where A represents a terminal group for polyacrylates R.sub.1 represents an oleyl group containing up to 20 mol % stearyl groups: R.sub.2 is a residue with the formula --(CH.sub.2 H.sub.4 O).sub.x (C.sub.3 H.sub.16 0).sub.y --CH.sub.3, where x is between 8 and 24 and y is between 0.75 and 2.25; l is between 1 and 3 is between 0.85 and 3.5; and n is between 0.12 and 0.5. A method of forming a reverse emulsion using this emulsifying agent. A heavy reverse emulsion, without solids comprising: 10 to 70% by volume of a dispersed brine phase having a density of between 1.20 and 2.77; 90 to 30% by volume of a continuous oil phase, and 15 to 60 g/liter of this emulsifying agent.

Emulsfiying agent, reverse emulsions produced using this emulsifying

Process for treating an aqueous solution of acrylamide resin, characterized in that an emulsifier which is preferably nonionic or anionic, a solution of initiator comprising an organic peroxide, preferably a diperoxide, and optionally a solution of a retarder preferably consisting of a phenol derivative or an alkali metal inorganic derivative are added slowly and with stirring, preferably in the form of a pre-emulsion, to an aqueous solution of acrylamide resin monomer.

Process for treating an aqueous solution of acrylamide resin in order to

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Saint-Raphael, France

Jean-Pierre P Binon