Downhole tool for measuring the dielectric characteristics of reservoir fluid

In work the device for measurement of dielectric characteristics of a reservoir fluid is presented. This device is designed to work in a well with a depth of up to 5 km. Measurements of dielectric characteristics are made by the capacitive divider method, and both amplitude and phase changes of high frequency oscillations passing through two measuring capacitor cells filled with the investigated fluid are taken into account. Measuring cells differ in the length of the central electrode and are designed to work in different parts of the oil-water concentration range. Based on the results of the tests, the optimal range of operating frequencies of the device is determined, depending on the design of the cells used.