terms:spinner
A flowmeter. The downhole instrument consists of an impeller, inside a protective cage, which is caused to rotate by the motion of borehole fluid past the blades. An alternating current, or the frequency of pulses, constitutes the signal sent to the surface and is related to the rate of fluid flow pass the impeller. A survey is made by moving the tool against the flow of fluid, with the flow, or maintained stationary in the hole. Its primary use is in monophasic flow streams.
terms/spinner.txt · Last modified: 2023/11/22 08:42 by 127.0.0.1