Continuous Jeweled Bearing Flowmeter (IFJM11)
· Production profiling
· Injection profiling
· Logging in sand screens /slotted liners
· Particularly good for use In high velocity
The Jeweled Bearing Flowmeter (mechanical section) employs jewels for the
support of the spinner pivot to reduce threshold displacement and improve
sensitivity. The tool is very rugged as the housing provides the spinner with
good protection. The flowmeter is applicable to all deviations, from vertical to
The HTF02 is connected to measure the downhole flow rate. The mechanical
section is composed of upper sub, outer cage, spinner and central spindle.
Both ends of the central spindle are supported by a jeweled bearing
respectively. Moving fluids flowing through the spinner may rotate the spinner,
which then rotates the magnetic steel on the central spindle to trigger Hall
device assembly in the HTF02 to generate 10 pulsed signals per revolution.
The signals are processed in circuits first and then transmitted to the surface