Device for measuring function of blowout preventers, has parallel lines of ultrasonic sensors that are connected with burst transmission unit and booster assembly, where output signals are supplied to output signal amplitude comparison unit.

1. BOP
Ultrasonic Monitoring
F.-M. Jäger
IBJ Technology
Colkwitzer Weg 7
04416 Markkleeberg
Germany
fmj@ibj-technology.com
www.ibj-technology.com
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Ingenieurbüro JägerIngenieurbüro Jäger 1
(IBJ subsea piston position measurement)

2. Position measurement of hydraulic
pistons
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Ingenieurbüro JägerIngenieurbüro Jäger 2
These piezoelectric elements are attached
laterally on the hydraulic cylinder
BOP Ultrasonic Monitoring

3. Area of the measurement
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Ingenieurbüro JägerIngenieurbüro Jäger 3BOP Ultrasonic Monitoring

4. Ultrasonic Signals-high frequency
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Ingenieurbüro JägerIngenieurbüro Jäger 4BOP Ultrasonic Monitoring
Without piston - reflection

5. Ultrasonic Signals-high frequency
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Ingenieurbüro JägerIngenieurbüro Jäger 5BOP Ultrasonic Monitoring
With 10% piston – small reflection

6. Measurement under the sensors
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Ingenieurbüro JägerIngenieurbüro Jäger 6BOP Ultrasonic Monitoring
The amplitude of echoes is inversely proportional to the surface of the piston
Without piston (0 % piston) With piston (100 % piston)

7. Waveform of the echos-analog
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Ingenieurbüro JägerIngenieurbüro Jäger 7BOP Ultrasonic Monitoring
The amplitude of echoes without piston
Analog amplitudes in the BOP demonstrator

8. Waveform of the echos-absolut
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Ingenieurbüro JägerIngenieurbüro Jäger 8BOP Ultrasonic Monitoring
A-Scann Absolut without Filter, without piston
Echo-Amplitudes in the BOP demonstrator

9. Waveform of the echos-absolut
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Ingenieurbüro JägerIngenieurbüro Jäger 9BOP Ultrasonic Monitoring
A-Scann absolut without Filter, with piston
Echo-Amplitudes in the BOP demonstrator

10. Measurement between the sensors
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Ingenieurbüro JägerIngenieurbüro Jäger 10BOP Ultrasonic Monitoring
The amplitude of echoes is inversely proportional to the surface of the piston
With 70 % pistonWith 20 % piston With 50 % piston
Amplitudes in the demonstrator hydraulic accumulator

11. Principle of the housing with
2 sensor Strips
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Ingenieurbüro JägerIngenieurbüro Jäger 12BOP Ultrasonic Monitoring

12. Measurement with redundant µP
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Ingenieurbüro JägerIngenieurbüro Jäger 12BOP Ultrasonic Monitoring
96 Modbus Interfaces
95 Processor
94 Filter /Reciver /Pulser
91 Sensorstrip A
92 Sensorstrip B

13. Measurement with high security
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Ingenieurbüro JägerIngenieurbüro Jäger 13BOP Ultrasonic Monitoring
16 Sensors
16 Transmitter
16 Receiver

14. Measurement with 2 processors
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Ingenieurbüro JägerIngenieurbüro Jäger 14BOP Ultrasonic Monitoring
Processor 2 monitors processor 1, Processor 2 can replace 1

15. Measurement schematic
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Ingenieurbüro JägerIngenieurbüro Jäger 15BOP Ultrasonic Monitoring
2 Processor 2, 16 sensors, 16 transmitter, 16 receiver

16. Measurement signal flow
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Ingenieurbüro JägerIngenieurbüro Jäger 16BOP Ultrasonic Monitoring
2 Processor 2, 16 sensors, 16 transmitter, 16 receiver

17. Measurement of the accumulator
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Ingenieurbüro JägerIngenieurbüro Jäger 17BOP Ultrasonic Monitoring
For 1.2 m 6 sensorstrips
and 3 processor units
The reflection on the wall
is better than on the piston
rod

18. Piston Position Software
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Ingenieurbüro JägerIngenieurbüro Jäger 18BOP Ultrasonic Monitoring
For real BOP
2 sensorstrips
with16 sensors

19. Real BOP Piston Position
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Ingenieurbüro JägerIngenieurbüro Jäger 19BOP Ultrasonic Monitoring
For real BOP - 2 sensorstrips with16 sensors

20. BOP Piston Position Patent
application
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Ingenieurbüro JägerIngenieurbüro Jäger 20BOP Ultrasonic Monitoring
Device for measuring function of
blowout preventers, has parallel
lines of ultrasonic sensors that are
connected with burst transmission
unit and booster assembly, where
output signals are supplied to
output signal amplitude
comparison unit