Transporting fluids through a conduit

Details Transporting fluids through a conduit Transporting fluids through a conduit

F - Mech Eng,Light,Heat,Weapons

15

D

F15D 1/06 (2006.01) E21B 37/00 (2006.01)

Patent

CA 2548645

A method of sequentially transporting a first and a second fluid at a volumetric flow rate through a conduit having a cross-section, wherein the first and second fluids have different densities, which method comprises the steps of estimating a critical stratification condition for a fluid density profile along the conduit, which condition takes into account the densities of the first and second fluids, the cross-section of the conduit and the volumetric flow rate, and wherein violating the critical stratification condition likely results in stratification of fluids to occur; and feeding sequentially only first fluid, a buffer fluid and only second fluid into the conduit, wherein the buffer fluid has a density between the densities of the first and second fluids, such that a density profile of fluid along the conduit is provided, which does not violate the critical stratification condition.

L'invention concerne un procédé permettant de transporter de manière séquentielle un premier et un second fluides à un débit volumétrique dans un conduit présentant une section transversale. Le premier et le second fluides ont des densités différentes. Ledit procédé consiste à estimer un état de stratification critique concernant un profil de densité fluidique le long du conduit, l'état en question prenant en compte les densités du premier et du second fluides, la section transversale du conduit et le débit volumétrique. La violation de l'état de stratification critique peut probablement résulter dans la survenue de la stratification des fluides. Le procédé consiste ensuite à verser de manière séquentielle dans le conduit seulement le premier fluide, un fluide tampon et seulement le second fluide, le fluide tampon ayant une densité comprise entre celles des premier et second fluides, de façon à produire un profil de densité fluidique dans le conduit qui ne viole pas l'état de stratification critique.

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