| 摘要 |
An apparatus for determining the concentration of a conductive fluid present in a fluid filled borehole. Such water hold-up meters are frequently used in oil, gas and water filled bore holes. In borehole applications, data bandwidth between a down hole device and the surface can be limited, while determining water hold-up based on down hole measurements can be data intensive. A device is proposed for calculating the water hold up that requires less data to be transmitted between the down hole device and the surface. The apparatus may comprise one or more resistance probes, each comprising a housing 12 made of insulating material, a sensor electrode 14 and a reference electrode 16. The apparatus further comprises a processor arranged to receive resistance measurements and calculate a mean and standard deviation of the resistance measurements for determination of the proportion of a conductive fluid or the resistance of one fluid within a mix of fluids or the mean and standard deviation may be transmitted to a second processor at a second location for determination. |
