Www.online-electronics.com Turnkey Solutions for Non-Intrusive Pig Monitoring Alan Webster Special...
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Transcript of Www.online-electronics.com Turnkey Solutions for Non-Intrusive Pig Monitoring Alan Webster Special...
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Turnkey Solutions for Non-Intrusive Pig
Monitoring
Alan WebsterSpecial Projects Manager
Confirmation of Pig Launch
Subsea Pig Monitoring
Buried Line Pig Monitoring
Confirmation of Pig Receipt& Position
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Stages of Pig Monitoring
Confirmation of Pig Launch
Onshore Launcher/ReceiverMagnetic Signalling
References: Heimdal to Brae ProjectZirku Island, UAE
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Pig Launch Indication
It is a common Operator requirement to accurately determine when a pig has been launched successfully. This is usually monitored at a number of locations during launch operations:
• Pig exiting the launcher
• Pig entering and leaving first valve
• Pig having left the launch site
The method discussed will illustrate how non-intrusive magnetic signallers can accurately determine the success of a pig launch.
4001D MAGSIG® Non-Intrusive Signalling
Pipeline
Event Call Up
Log Up to 99 Events
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15:40:3224/04/08
PIGDETECTED
Magnets
Pig Launch
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Mechanical Signaller
OEL MAGSIG® 4001D ATEX
GSM Unit ATEX
Pig Passed 1st Valve
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OEL MAGSIG® 4001D
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Launcher/Receiver Pig Position
Used to indicate pig at door
Used to indicate pig in trap Used to indicate pig
passed pigging valveUnreliable signalling
Subsea Pig Monitoring
Magnetic Signalling Subsea to
Vessel (Reference: Heimdal to
Brae Project)
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Pig Passage Indication Subsea
Non-intrusive pig signalling methods can also enable monitoring of subsea pig passage remotely from a vessel.
• Receive an acoustic or electromagnetic signal via ROV umbilical.
• Having a diver/ROV monitor a signaller display
• Transmitting the data autonomously using acoustic technology
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4000SDNon Intrusive Signalling
Pipeline
Event Call Up
Log Up to 99 Events
DETECTED!
Optional Strobe/ Pinger
OUTPUT
Heimdal to Brae Project4000SD Magnetic Subsea Signaller
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Remore Sub-Sea Signalling4000SD with 1260 pinger
Event/Data Logging•Detects Magnetically equipped objects in subsea lines / receivers• Integrated counter• Rated to 3000mtrs
User Configurable:Deployment timeTrigger levelDelay time between events Event deletion
Surface Hydrophone
2001 Acoustic Receiver in Control Room
4000SD Linked to 1260 Pinger
Acoustic Receiver on Vessel
Topside Acoustic Receiver connected to a laptop operating Audioscope software to provide Graphic information on signal of pig
passage
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Confirmation of Pig Passage
Background Ping Rate
Buried Line Pig Monitoring
Remote Pig Tracking:
Reference:
BP CATS Trans Alaska Pipeline
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Remote Pig Tracking
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To remotely monitor pigs passing certain points onshore, the information needs to be transmitted from the point of pig passage on the pipeline to the location of the operator which in practice could be many miles apart. Two methods of data communication were employed:
– GSM unit connected directly to signaller/receiver which transmits information directly to an operator’s phone
– Remote EM Receiver which receives information from an antenna on a pipeline and then transmits this information via a company network or GSM.
3002XGSM Output
DETECTED!GSM LINK
Pipeline
3002X remotely transmits signal
to GSM
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Message received by up to
to 4 mobiles
BP CATS Remote Pig Monitoring
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3003X ATEX Antenna Strapped to Pipe
Signal transmitted via cable to 3002X ATEX Receiver
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The antenna cable runs across the road to the valve station control room
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Trans Alaska Pipeline
Valve Station Control Room
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3002E Remote Receiver in Control Room
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3002E Receiver inside the control room
Confirmation of Pig Receipt
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Three independent methods of
confirmation of pig receipt required
(Reference: Kinneil)
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00 00 01 01
Confirmation of Pig Receipt
1. MAGSIG
2. 3002x EM
1. MAGSIG
Scan performed to find pig
Bypass closedmore
2. 3002x EM
70cm
id5000a Active Ultrasonic Pig Detector
Transmits ultrasonic sound pulses across
pipeline.
Pulses echoed back by back wall of
pipeline
Continuous ‘beam’ of sound generated
across pipeline until interrupted by pig
passing
On pig detection relay contacts close to signal passage
remotely
id5000aSensor
70cm
31cm
Identification of Pig or Plug Location
Location of clearzone in pipeline
confirmed
id5000a
Sensor
Search for start of pigScan to confirm profile of pig/plug
31cm
Scan made at equidistant points
along receiver
Debris Mapping Using Id5000A
id5000a
SensorReceiver
Door
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Many thanks for your attention.
Alan WebsterSpecial Projects Manager