Rhodia Operations

Ifp Energies Nouvelles

Institut Francais Du Pe'trole

Brigitte Bazin

Mikel Morvan

Patrick Moreau

Herve Adam

Patrick Gateau

Dominique Labarre

James Wilson

Jean-Francois Argillier

Benjamin Herzhaft

Jean-François Argillier

David Rousseau

Hervé Adam

Michel Quintard

Rene Tabary

Charles Edouard Cohen

Didier Ding

The invention relates to the use of at least one compound corresponding to the formula below:R&#x2014;O&#x2014;(&#x2014;CH&#x2014;CH(&#x2014;CH)&#x2014;O&#x2014;)&#x2014;(&#x2014;CH&#x2014;CH&#x2014;O&#x2014;)&#x2014;Hin which:

Ethoxylated desorbing agents for enhanced oil recovery

The inhibition of anionic surfactant retention phenomena in an oil reservoir, especially in a carbonate-based or argillaceous reservoir, by the use of at least one compound corresponding to the formula R&#x2014;O-(A)m-H, in which R is a hydrocarbon-based group comprising from 6 to 40 carbon atoms, A is a hexose or pentose unit, and m is a non-zero number ranging from 1 to 10, is described herein.

Alkyl polyglucoside desorbents for enhanced oil recovery

Method of modelling the evolution of the pH value of a porous medium after injection of an alkaline agent solution into this medium. The alkaline agent is considered as a soda pseudo-constituent of concentration equal to an OH&#x2014; concentration corresponding to the pH value of the alkaline agent solution injected. An adsorption equation calibrated to experimental data is then used to determine an amount of soda pseudo-constituent adsorbed, from the concentration of the soda pseudo-constituent. Finally, the evolution of the pH value is modelled by modelling the transport of the alkaline agent solution by means of a soda transport simulator, by replacing the soda by the soda pseudo-constituent.

Method of determining an amount of alkaline agent to be injected within the context of enhanced oil recovery

Provided is a process of enhanced oil recovery from an oil reservoir of an underground formation by using a compound of formula (I) to inhibit the phenomena of retention of anionic surfactants within an oil-bearing reservoir, such as a carbonate or clay reservoir: R&#x2014;O&#x2014;(&#x2014;CH&#x2014;CH(&#x2014;CH)&#x2014;O&#x2014;)&#x2014;(&#x2014;CH&#x2014;CH&#x2014;O&#x2014;)&#x2014;H, wherein: R is a hydrocarbon-based group comprising from 6 to 40 carbons; m ranges from 0 to 20; n is greater than m and ranges from 5 to 40.

Desorbants for enhanced oil recovery

The invention relates to a copolymer having: The invention also relates to a method for preparing such a copolymer, an inhibitor composition including such a copolymer, and a method for inhibiting inorganic deposits in a petroleum reservoir by means of said inhibitor composition.

Copolymer for inhibiting inorganic deposits

Method for modeling acidification within a porous medium as a result of the injection of an acid. A dual-medium model is constructed, considering a first sub-medium favorable to dissolution breakthroughs and a second sub-medium not favorable to dissolution breakthroughs. For each one of these sub-media, a metric-scale description of the acid transport, of the sub-medium and acid mass conservation and of the acid transfer from one sub-medium to the other sub-medium is achieved. This dual-medium model is then initialized from experimental calibrations. Finally, acidification of the medium is modelled by means of this dual-medium model.

Method for large-scale modelling and simulation of carbonate wells stimulation

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Rueil-Malmaison, France

Brigitte Bazin