DEVICES FOR CHARACTERIZING A MULTIPHASE FLUID HAVING A CONTINUOUS CONDUCTIVE PHASE

摘要

The invention relates in particular to a device for determining the mean resistivity of a multiphase fluid having a continuous conductive phase, the device including a pipe segment (4) of insulating material and means (6) for generating an electric current in the fluid flowing along the pipe. The device has two measurement electrodes (10, 11) spaced apart in the axial direction of the insulating segment to measure the electrical resistance between said two electrodes, the measurement electrodes being applied to the outside of the wall of the segment to perform measurement by capacitive coupling, and the device further having means (12-22) for measuring the voltage between the measurement electrodes. The invention is applicable to determining the volume fraction ("holdup") of water in a mixture of water and hydrocarbons.