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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


Stages of Pig Monitoring

Confirmation of Pig Launch

Onshore Launcher/ReceiverMagnetic Signalling

References: Heimdal to Brae ProjectZirku Island, UAE



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


15:40:3224/04/08

PIGDETECTED

Magnets

Pig Launch


Mechanical Signaller

OEL MAGSIG® 4001D ATEX

GSM Unit ATEX

Pig Passed 1st Valve

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OEL MAGSIG® 4001D


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)



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


4000SDNon Intrusive Signalling

Pipeline

Event Call Up

Log Up to 99 Events

DETECTED!

Optional Strobe/ Pinger

OUTPUT

Heimdal to Brae Project4000SD Magnetic Subsea Signaller



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


Confirmation of Pig Passage

Background Ping Rate

Buried Line Pig Monitoring

Remote Pig Tracking:

Reference:

BP CATS Trans Alaska Pipeline


Remote Pig Tracking


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


Message received by up to

to 4 mobiles

BP CATS Remote Pig Monitoring


3003X ATEX Antenna Strapped to Pipe

Signal transmitted via cable to 3002X ATEX Receiver


The antenna cable runs across the road to the valve station control room


Trans Alaska Pipeline

Valve Station Control Room


3002E Remote Receiver in Control Room


3002E Receiver inside the control room

Confirmation of Pig Receipt


Three independent methods of

confirmation of pig receipt required

(Reference: Kinneil)


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


Many thanks for your attention.

Alan WebsterSpecial Projects Manager

www.online-electronics.com turnkey solutions for non-intrusive pig monitoring alan webster special...

Documents

valve pig

signal of pig

launcher pig

point of pig passage

remote pig trackingwww

launch operations

launch site

compig launch indicationit