Arrangement for improved water-oil ratio measurements

G - Physics – 01 – F

Patent

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Details

G01F 1/74 (2006.01) G01N 33/28 (2006.01) G01N 35/00 (2006.01)

Patent

CA 2370232

A method of, and apparatus for measuring the relative propor-tions of oil and water in a flowing multiphase fluid comprising allowing the gas, oil and water phases of the multiphase fluid at least partially to separate, diverting at least some of the separated gas phase from the flowing fluid, into a bypass conduit, through a separating mod-ule, such as the tank of a homogenising unit, wherein the gas phase tends to separate and collect above a pool of fluid, and measuring the relative proportions of oil and water in the undiverted fluid. A valve is located in the bypass conduit which has an inlet leading from the upper section of the tank (where gas collects) and an outlet joining the outlet pipe leading from the homogenising unit downstream of meter-ing apparatus.

L'invention concerne un procédé et un appareil pour mesurer les proportions relatives d'huile et d'eau dans un écoulement de fluide multiphasique. Ce procédé consiste à assurer la séparation des phases de gaz, d'huile et d'eau du fluide au moins partiellement, et à faire dévier au moins une partie de la phase de gaz séparée à partir dudit fluide, dans une conduite de dérivation, à l'aide d'un module de séparation, telle que la cuve d'une unité d'homogénéisation. La phase gazeuse tend alors à se séparer et à se collecter au-dessus du fluide. Ce procédé consiste enfin à mesurer les proportions relatives d'huile et d'eau dans un fluide non dévié. Une soupape est placée dans la conduite de dérivation qui comporte une entrée provenant de la section supérieure de la cuve (où le gaz se collecte) et une sortie rejoignant la conduite de sortie et provenant de l'unité d'homogénéisation en aval de l'appareil de mesure.

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