Societe Nationale Elf Aquitaine (Production)

Societe Nationale Elf Aquitaine

Jean-Francois Coste

Henri Grangette

Jacques Tellier

Claude Chambu

Jacques De Lautrec

Jean-Paul Barriol

Aqueous micro-emulsions of organic substances

Oil and water microemulsions having a high salt content and intended for assisted petroleum recovery are prepared from a concentrate containing:

Concentrate for the preparation of oil and water microemulsions having

A defoaming apparatus comprising a column having three levels, a lower level, an intermediate level, and an upper level. The foam to be broken is injected into the lower level with mud. A shaft in the intermediate level serves as an aspirator. Air or another gas is injected into the shaft and the vacuum thus produced pulls the foam upwardly. The foam is discharged from the shaft against vanes located in the upper level where upon the foam is broken into gas which is discharged and liquid which is recovered. Sediment from the foam is drawn off at the bottom of the apparatus.

Defoaming apparatus

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Muret, France

Jean-Francois Coste