Institut Francais Du Pe'trole

Claude Gatellier

Jean-Pierre Durand

Patrick Gateau

Philippe Renault

Christian Bocard

Henri Seris

Andree Plessis

Lucien Bourguet

A method and device are provided for assessing the clogging risks of a well or bore hole into which a fluid is injected or pumped. According to this method controlled amounts of said fluid are caused to flow through a plurality of samples representative of the porous reservoir which are fed in parallel and whose temperature is maintained substantially constant, and the loss of permeability of said samples is measured as a function of time.

Method and device for assessing the clogging risks of a well or bore

Dispersant and biodegradant formulations are manufactured by admixing at least one melamine derivative with at least one compound having a hydroxy function, at least one phosphorus compound and at least one surfactive agent. Aqueous emulsions obtained from these formulations are also provided.

Dispersant and biodegradant formulations for treating

Process for absorbing hydrocarbons or organic solvents, particularly in solution or suspension in water at a low concentration, by means of an absorption mass consisting of rubber particles of from 0.1 to 3 mm, subjected to a treatment with an organic or inorganic acid or an aqueous solution or emulsion thereof.

Modified rubber, its use as hydrocarbon absorber

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Boulogne, France

Claude Gatellier