Abstract: Method of separating two dispersed-phase immiscible liquids. The two liquids are fed into a gravity separator where both liquids are separated by decantation. A first phase consisting of a first liquid is obtained at the bottom of the separator, a second phase consisting of the second liquid is obtained at the tap of the separator, a third phase containing the two dispersed-phase immiscible liquids and a fourth phase containing the two immiscible liquids in a dense bed are obtained. Physico-chemical properties of the liquids and of the dispersed phase are measured, and a physical separation model is defined. This model is defined considering that the separator works under stationary conditions, using a matter conservation balance for the first fluid within the dense bed, while taking account of a first phenomenon of coalescence between water drops within the third phase, and of a second phenomenon of coalescence between water drops of the fourth phase and the first phase.

Abstract: 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.

Abstract: 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.

Abstract: 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 (01) of amplitude a1 and at least a second series of surfaces (02) of amplitude a2. The second series of surfaces (02) is arranged so as to be superposed on the first series of surfaces (01), the first series of surfaces (01) allowing inhibition of at least turbulence of great amplitude and the second series of surfaces (02) 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.

Abstract: A method for transporting a fluid, for instance gas under pressure, in a pipe while reducing head loss to a minimum, comprises injecting into the pipe a fraction of a liquid with a predetermined flow rate so that the combination formed by the gas flow and the injected liquid fraction has the form of a ring-shaped control flow over at least the length of the pipe, and on delivery separating the injected liquid fraction from the gas under pressure.

Abstract: 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.