Institut Francais Du Pe'trole

Ifp Energies Nouvelles

Thierry Palermo

Alexandre Rojey

Jean Falcimaigne

Christine Dalmazzone

Jean-Claude P Collin

Lionel Rousseau

In order to determine the gas hydrate anti-agglomeration power of a system composed of an aqueous phase dispersed in a liquid hydrocarbon phase in the presence of a gas, at least two successive cycles of hydrate formation and dissociation is carried out by cooling and reheating a sample of said system placed in the cell of a calorimeter to record thermograms; the anti-agglomeration power of said system is determined by comparing the thermograms obtained during the various cycles.

Method for determining the gas hydrate anti-agglomeration power of a water/oil system

The invention is a structure for inhibiting the turbulence phenomena of a fluid, exhibiting a surface geometry comprising at least one series of inhibition surfaces which inhibit turbulence present in a boundary layer of the fluid in proximity to the wall of the structure and which extend substantially longitudinally in the direction of flow of the fluid. The inhibition surfaces comprise at least a first series of surfaces (,) of amplitude a,and at least a second series of surfaces (,) of amplitude a,. The second series of surfaces (,) is arranged so as to be superposed on the first series of surfaces (,), the first series of surfaces (,) allowing inhibition of at least turbulence of great amplitude and the second series of surfaces (,) allowing inhibition of at least turbulences of low amplitude. The structure has an application for forming at least part of a pipe for conveying a pressurized gas.

Modified surface for reducing the turbulences of a fluid and transportation process

Method of transporting gas under pressure in the presence of a liquid

A method and device for separating a continuous phase from at least one dispersed phase, with the phases having different densities. A mixture of the phases to be separated is supplied into a device including at least one cylindrical chamber vertically disposed and at least one static helically-shaped member is accommodated in the chamber. At least one face of the helically-shaped member is formed by a helicoidal surface. A maximum free path of a dispersed phase particle in a radial direction prior to colliding with the helically-shaped member is less than one quarter of a peripheral diameter of the member and, preferably, less than one tenth of an internal diameter of the chamber. The method and apparatus are capable of separating an aqueous phase from an organic phase such as, a petroleum fluid, with the mixture to be separated also possibly including a gaseous phase and a solid phase.

Method and a device for separating a continuous fluid phase from a

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La Garenne Colombes, France

Thierry Palermo