"DEVICE AND PROCESS FOR MONITORING THE POSITION OF AN OIL / WATER CONTACT". A device for monitoring the position of an oil / water contact (OWC, 22) between a continuous oil fluid (2o) that overlaps with a continuous water fluid (2w) within a casing tube (7) comprising the following aspects: a transmitter (5) for generating an electromagnetic signal (S ~ T ~), said transmitter (5) provided with electric power (G ~ T ~) from a voltage signal generator (G); said transmitter (5) being arranged within said oil continuous fluid (2 °), and which is above said oil / water contact (22) and which is within said casing tube (7); said electromagnetic wave signal (S ~ T ~) to partially propagate downwardly from said transmitter (5); said electromagnetic wave signal (S ~ T ~) to be partially reflected from said oil / water contact (22) and partially reflected by the end of the coating, giving rise to a reflected upward propagating electromagnetic signal (S ~ R ~); a sensor (6) for detecting said reflected electromagnetic signal (S ~ R ~), and said sensor (6) also arranged above said water / oil contact (22), which provides a sensor signal (R ~ R ~) for a receiver (60) for receiving said sensor signal (R ~ R ~) and further for an analyzer device (61) for analyzing said sensor signal (R ~ R ~), for example, with respect to propagation time in two directions or amplitude to calculate an elevation level for said oil / water contact (22).
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