Abstract: In a method for determining a total hydrocarbon composition of a multiphase flow including gas and liquid, the method includes taking different samples of the gas and liquid at at least two different thermodynamic states of the multiphase flow. The method further includes analyzing the different samples, and using a molar balance of the different samples at the at least two different thermodynamic states to calculate a gas molar fraction and a liquid molar fraction. The gas molar fraction and liquid molar fraction may be used for deriving an overall composition of the multiphase flow and for deriving the gas and liquid volume fractions.

Abstract: In a method for determining a total hydrocarbon composition of a multiphase flow including gas and liquid, the method includes taking different samples of the gas and liquid at t least two different thermodynamic states of the multiphase flow. The method further includes analyzing the different samples, and using a molar balance of the different samples at the at least two different thermodynamic states to calculate a gas molar fraction and a liquid molar fraction. The gas molar fraction and liquid molar fraction may be used for deriving an overall composition of the multiphase flow and for deriving the gas and liquid volume fractions.

Abstract: An apparatus for displacing an article or a person in parallel with the curvature of and in proximity to a surface of variable profile possessing convex and/or concave parts, as the case may be, comprising a support for the article to be displaced in the vicinity of the surface, having at least two guide rollers, engaged respectively in each of two separate rail-forming grooves made in a structure for bearing on the ground which is moveable and which is located as near as possible to the surface, this structure having a profile corresponding substantially to that of this surface, the two rollers being arranged in their respective grooves in such a way that they are always separated by an invariable distance, a motor being provided for displacing the rollers in their grooves, wherein the grooves receiving the rollers are open outwards and provided on either side of a upright belonging to the bearing structure, these grooves having different profiles which are a function of the curvature of the surface and whic

Abstract: Device for the curved displacement of an object in contact with a surface, such as a convex, concave or complex surface, comprising a vertical support frame, arranged in the vicinity of the surface, and a bearing arm consisting of at least one pantograph, one end of which, integral with the vertical support frame, can be displaced over the height of the latter, and the other end of which carries the object to be displaced at an appropriate distance from, and out of contact with, the surface, wherein at least one of the hinge pins of the arm of the pantograph is displaced, with the movement of the arm relative to the frame, in a groove whose profile is homothetic with that of the surface, and situated in a vertical plane containing the pantograph arm.