BOP Ultrasonic Monitoring - ibj-technology.com · BOP Ultrasonic Monitoring F.-M. Jäger IBJ...

BOPUltrasonic Monitoring

F.-M. JägerIBJ Technology

Colkwitzer Weg 704416 Markkleeberg

Germany

fmj@ibj-technology.comwww.ibj-technology.com

IBJ TechnologyIBJ TechnologyIngenieurbüro JägerIngenieurbüro Jäger 1

(IBJ subsea piston position measurement)

Position measurement of hydraulic pistons

IBJ TechnologyIBJ TechnologyIngenieurbüro JägerIngenieurbüro Jäger 2

These piezoelectric elements are attached laterally on the hydraulic cylinder

BOP Ultrasonic Monitoring

Area of the measurement

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Ultrasonic Signals-high frequency

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Without piston - reflection

Ultrasonic Signals-high frequency

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With 10% piston – small reflection

Measurement under the sensors

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The amplitude of echoes is inversely proportional to the surface of the piston

Without piston (0 % piston) With piston (100 % piston)

Waveform of the echos-analog

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The amplitude of echoes without piston

Analog amplitudes in the BOP demonstrator

Waveform of the echos-absolut

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A-Scann Absolut without Filter, without piston

Echo-Amplitudes in the BOP demonstrator

Measurement signal flow

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2 Processor 2, 16 sensors, 16 transmitter, 16 receiver

Measurement between the sensors

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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

Principle of the housing with

2 sensor Strips

IBJ TechnologyIBJ TechnologyIngenieurbüro JägerIngenieurbüro Jäger 12BOP Ultrasonic Monitoring

Measurement with redundant µP

IBJ TechnologyIBJ TechnologyIngenieurbüro JägerIngenieurbüro Jäger 12BOP Ultrasonic Monitoring

96 Modbus Interfaces 95 Processor94 Filter /Reciver /Pulser91 Sensorstrip A92 Sensorstrip B

Measurement with high security

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16 Sensors16 Transmitter16 Receiver

Measurement with 2 processors

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Processor 2 monitors processor 1, Processor 2 can replace 1

Measurement schematic

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2 Processor 2, 16 sensors, 16 transmitter, 16 receiver

Waveform of the echos-absolut

IBJ TechnologyIBJ TechnologyIngenieurbüro JägerIngenieurbüro Jäger 9BOP Ultrasonic Monitoring

A-Scann absolut without Filter, with piston

Echo-Amplitudes in the BOP demonstrator

Measurement of the accumulator

IBJ TechnologyIBJ TechnologyIngenieurbüro 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

Piston Position Software

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For real BOP2 sensorstrips with16 sensors

Real BOP Piston Position

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For real BOP - 2 sensorstrips with16 sensors

BOP Piston Position Patent application

IBJ TechnologyIBJ TechnologyIngenieurbüro 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