Operational Pipeline Pigging

Tuesday 6th and Wednesday 7th November 2018

Presented by

Tuesday 6th November 2018

Pigging Tutorials

Tuesday 6th November 2018

Pre-seminar evening dinner event

Wednesday 7th November 2018

Seminar Presentations and Exhibition
Seminar Registration from 8.15 am
Seminar Commences 8.50 am
Seminar Ends 5.10 pm

Ardoe House Hotel and Spa

South Deeside Road
Aberdeen AB12 5YP

Tel: +44 1224 398801, Fax: +44 1224 860644
Website: http://www.mercure.com/gb/hotel-6626-mercure-aberdeen-ardoe-house-hotel-and-spa/index.shtml

Plan now to attend this practical and informative one-day seminar and exhibition on pipeline pigging, covering pigging techniques and applications and highlighting the latest developments within the industry.

The seminar presentations will be given by PPSA members, all experts in their own field.

In addition to the seminar you can also choose to attend tutorials and the pre-seminar evening dinner.


This year PPSA members are running 2 tutorials on the day before the main seminar; one in the morning and one in the afternoon. The price of the tutorials is in addition to the seminar price and can be booked separately. The delegate rate for one tutorial is £ 100 (+ VAT) and two tutorials is £ 175 (+ VAT). Places are limited to 30 delegates per tutorial, available on a first-come, first-served basis.

It is not necessary to attend the main seminar in order to attend the tutorials.

The tutorials are as follows:

Offshore Pipeline Legislation
Presented by Dennis Keen, Penspen

Provide those whose work involves them in the planning, design, construction, commissioning, operations, inspection, maintenance or abandonment of offshore pipelines with an understanding of the UK legislation in respect of these activities.

Flow Modelling & Assurance
Presented by Gareth Smith and Ashwin Pinto, ROSEN Group

Pipeline cleaning campaigns are often an essential requirement prior to inspection pigging. This workshop will demonstrate how Flow Assurance methods used in conjunction with steady state and transient thermo-hydraulic modelling are a significant benefit to the efficient design of pig cleaning and inspection programs.

Key issues covered will include:

  • General introduction to Flow Assurance
  • Simulation tools (1D vs 3D modelling)
  • Flow regimes and identification of slugging issues
  • Liquid management and removal for wet gas lines
  • Single & dual line pigging operations
  • Pipeline solids – the “What and Where” (scales waxes, asphaltenes, napthalates, hydrates, black powder etc.)
  • Identification of velocity range issues (maximum and minimum) for both cleaning and inspection pigging.
  • Experimental work to determine pig friction factors
  • Simulation of pigging both with and without bypass.

A number of case studies will be used to illustrate the use of modelling.

Pre-seminar evening event

This year’s pre-seminar evening event will consist of a brief introduction to whisky and the pairings, followed by a 3 course meal where each course is paired with a local single malt whisky.

The event will take place on the evening of Tuesday 6th November 2018 at either the Rye & Soda or the Tippling House in Aberdeen City Centre (depending on numbers). A bus will be provided from and to the Ardoe House Hotel for those staying there.

The price is £ 50 (inc VAT) per person and includes wine and beer at the tables. Places are limited to 50, first-come-first-served.

Show Menu

To Begin...

  • Cock-a-Leekie Terrine – Chicken Skin Crackers – Prune Jam
  • Croquette of Haggis, Neeps & Tatties – Peppercorn Cream
  • Scotch Broth – Crusty Bread (*available as vegetarian)
  • ...all paired with Glen Garioch Founder’s Reserve Single Malt
Main Course...
  • Seared Scottish Salmon – Shetland Black Potatoes – Wild Garlic – Dulse Seaweed Cream
  • Stuffed Chicken – Black Pudding – Clapshot – Thyme Jus
  • Smoked Scotch Beef Brisket – Sweet Potato Stovies – Beetroot – Peat Whisky Sauce
  • ...choice of either Ardmore Legacy Single Malt (peated) or GlenDronach 12 Year Old Sherry Cask (unpeated)
To Finish...
  • Bramble Cranachan – Toasted Oats – Red Berry Jam
  • Local Cheeses – Arran Oatcakes – Apple Chutney
  • ...paired to Royal Lochnagar 12 Year Old Single Malt

Networking breakfast

Delegates staying at the Ardoe House on a Bed & Breakfast basis can have breakfast in the Elliot Suite, which is exclusively reserved for PPSA delegates, on the morning of the seminar.

The Seminar

The seminar presentations will be given by PPSA members, all experts in their own field.

Presentations include:

Multi-Diameter Pig Development for the Gannet Field
Presented by Michael Cridland, Shell UK

Oil is exported from the Gannet platform to the 3rd party operated Fulmar platform via a 16” 107km pipeline.

An alternative export route is required as the Fulmar platform will cease production prior to the Gannet field. A project is underway to bypass the Fulmar platform and tie directly into the Judy 24” pipeline and subsequently into the 34” Norpipe system terminating at Teesside.

Operational pigging for the existing 16” pipeline from Gannet to Fulmar is currently completed on a 2-weekly frequency to remove wax and water drop-out using bi-directional pigs.

The new routing will require the use of pigs that can traverse the complex geometry of the new Gannet oil export routing with changes in diameter from 16” to 24” and 34”.

A series of optimisation trials with a pigging vendor have been completed with the purpose of designing and testing a pig that can clean the 16” and 24” pipeline sections and remain neutrally buoyant in the 34” Norpipe system.

The paper will share the details of these trials, collaboration with the pigging vendor to optimise the pig design and share the findings and benefits of the technology to the wider oil and gas industry.

The Apache Intelligent Pigging Project
Presented by Tom Steinvoorte, ROSEN Group, Netherlands and Apache, UK

In-line inspection of offshore aging pipelines can become an increasingly challenging task, for example because of wax build up or depleting production and consequently low flows.

This paper discusses a recent example of such a case: the in-line inspection of PL120; an offshore 18”-20” pipeline that transports stabilized crude oil from Beryl B to Beryl A platform in the North Sea.

The challenges to inspecting PL120 can be summarized as:

  • Pipeline operates at low pressure and with low flow
  • Is known to produce wax and is difficult to clean
  • Has complex geometry (short traps, 1.5D b2b bends, large ID variation)

Despite comprehensive pre-inspection cleaning campaigns, attempts to inspect the line using UT technology failed because of excessive wax on the internal surface of the pipeline. Although MFL technology is generally better able to deal with waxy debris, the magnetic forces make it significantly more difficult to negotiate a geometrically complex line with unfavorable operating conditions. This paper will discuss how the Apache – ROSEN team tackled these challenges and successfully developed and applied an MFL based solution that could safely inspect PL120.

Successful Inspection of a Critical UK Gas Supply Pipeline
Presented by Baker Hughes, a GE company, UK

Customer operates a gas export pipeline which connects a platform to a pipeline network in the North Sea.

The pipeline is linked to the network via a wye connection. From the wye, the pipeline continues to a terminal.

The pipeline had never been inspected previously and there were a number of important challenges to be considered when inspecting one of the UK’s critical gas supply lines, notably:

  • Passage of a subsea wye with multimodule pigs
  • Careful debris handling at receive during gauging and cleaning operations
  • Achieving a reliable detection and sizing specification in the thick wall onshore pipeline sections.

This paper describes how, in collaboration, the customer and BHGE, delivered a successful inspection project for the entire pipeline in one campaign.

Pressure Wave Analysis Streamlines Pipeline Pigging
Presented by Thomas Redares and Neil Stewart, Halliburton, UK

When planning a pipeline cleaning campaign, an operator often has limited knowledge of the actual conditions within the pipeline and therefore uses a conservative approach based on assumption and experience to design a pigging program for a pipeline. This therefore limits the ability to plan pigging operations optimally, cost effectively, and safely.

Using currently available pressure wave analysis technology, pipeline operators can non-intrusively survey their assets to obtain a clear understanding of the pipeline’s deposit profile in a safe and cost-effective manner, without having to stop production or risk inserting tools into the pipeline. This information can then be used to identify the best approach forward for cleaning the pipeline based on the analysis results. The pressure wave analysis provides the internal pipeline bore and key data points to consider, such as whether the pipeline is in a piggable condition, requires chemical treatment, or a more direct intervention is recommended. Whichever method is necessary, the knowledge achieved by performing a non-intrusive survey upfront helps ensure pigging or maintenance is executed effectively, economically, and with minimal risk. This technique can be further implemented throughout any pigging campaign to track and optimize the program as it progresses and confirm the efficiency of the pigging methodology.

The paper discusses how using this latest pipeline deposit surveying technique allows operators to plan a pigging campaign in a safe, timely, and cost-effective manner.

Ultrasonic Geometry: Proven accuracy for reliable assessment
Presented by Dr. Henrik Witte, NDT Global GmbH & Co. KG, Germany

State of the art and future assessment methodologies for geometrical defect types in pipelines benefit from superior inline inspection data. Post-inspection assessment of deformations such as strain, fatigue life, or finite element modelling require the most detailed, accurate and high-resolution data of the pipeline available.

Therefore, NDT Global has developed and validated a fleet with a new, reliable, and robust technology for pipeline geometry measurement, based on the ultrasonic measurement principle with inherent advantages such as bidirectional capabilities and wall thickness data acquisition in one pass.

Since the first successful commercial inspection in March 2016, the Atlas UG tool fleet has successfully conducted more than 3,100 km worldwide, achieving a 100% first run success rate and received positive feedback from operators.

Extensive testing and field verifications prove the accuracy and reliability of the ultrasonic technology.

Extrudable Welding Plugs
Presented by Michal Szczegolski, Aubin Group, UK

Even very slight temperature variations can cause a disruptive “suck and blow effect” effect within pipelines, which can prove problematic during welding activities. In 2016 Aubin provided elastomeric plugs designed to resist the pressure differential, to temporarily plug the pipe. Once the plugs were in place, welding operations would commence, then the pig train would be extruded through a subsea discharge port.

The client provided design constraints, causing Aubin’s in-house engineering team to design a specialised pig launcher. The constraints were:

  • Removable
  • Easy to use
  • Doesn’t require a flanged connection
  • Mechanical pig launch
  • No contact between duplex pipe and any metal.

The designed pig launcher used a nylon disk to push the elastomeric plug into the duplex pipeline, and was operated using a battery powered drill, which was supplied with the pig launcher.

Feedback from the client was that the launcher and pigs performed perfectly, as well as they had during testing. The pigs were inserted into three different dry lines, approximately 30Km long. The pigs were left in the lines for seven months, before being extruded through a 1” port subsea. The client is now planning to use these plugs in other welding and plugging operations.

Flexible Riser Life Extension with FlexIQ
Presented by Konrad Reber and Sebastian Hartmann, Innospection Ltd and Kirsten Oliver, INTECSEA, UK

This paper presents a novel approach to flexible riser life extension through FlexIQ which combines inspection data with a fully simulation-based irregular wave approach to provide life extension assessments.

FlexIQ combines the two proprietary technologies: MEC-FIT™ inspection technique from Innospection and FLEXAS™ numerical solver from Intecsea which allows high-resolution stochastic fatigue life to be captured based on realistic conditions. Reducing uncertainty in the design calculations enables operators to continue operating their assets safely and with improved confidence.

FlexIQ has established a step change for industry technology and has been recently successfully deployed on two offloading risers in West Africa with a total inspection length of 2.5km.

Field experience on how FlexIQ has been used to re-evaluate the design life and determine the suitability for life extension of the risers will be presented.

The analysis predicted safe and reliable operation of the assets well beyond the original design life, provided the asset management recommendations made within the study are adhered to.

Pathfinder - A New Direction in Pipeline Proving and Operational Pigging Performance Management
Presented by Peter Ward / David Cockfield, Pipeline Innovations Ltd, UK

The Pathfinder foam geometry tool was originally developed as a low risk, cost effective soft bodied tool for measuring pipeline geometry. In recent years through continuous improvement the Pathfinder has developed into a recognised, well established technology with an extensive track record for pipeline proving, internal diameter profiling, bend measurement reduced bore location, debris mapping and assessment.

Pathfinder is currently being used by service companies and operators a like on a regular basis to support a wide range of pipeline construction, commissioning and operational workscopes around the world.

This paper sets out to demonstrate the functionality of the Pathfinder and the extent of its operational capability through several high level case studies.

Innovative design developments and current trials on further improving minimum bore negotiation capabilities are also introduced.

Pipeline Innovations’ changing approach to pipeline pigging data acquisition has led to further development of the Pathfinder electronics operating platform to provide a range of standalone pipeline data loggers. The specifications and operational benefits of which are also discussed as part of the technical paper.

Breathing New Life to Aging Pipeline Infrastructure Using Unique Wireline Inspection Techniques and Pipe-Lining Technology
Presented by Clay Goudy, Q-Inline, USA

Mexico’s Energy Reform has opened up various interesting and unique opportunities for energy infrastructure. A CO2 pipeline project that is underway in southern Mexico provides a perfect example of how to breathe new life to deteriorated pipeline infrastructure – infrastructure that would have typically been written off. By coupling a unique pipeline inspection method with a novel lining system, two 28-kilometer pipelines were rehabilitated in record time and in a cost effective manner. The project consisted of two 12 and 18 inch CO2 transport pipelines that were out of service for 22 years and that are a central component of a high-profile fertilizer project.

To put this aging infrastructure back in service, it was essential to assess the condition of the pipelines with a high level of accuracy and precision which would allow for the installation of a structural liner to extend the system’s serviceable life. The challenge, however, was that these pipelines were un-piggable by traditional methods. By using a tethered MFL and Caliper ILI solution, the pipelines were inspected in 13 separate sections with the level of detail necessary to assess the condition and suitability of the rehabilitation strategy selected for the project. Fast-track scheduling constraints required 24-hour data analysis turn-around of reports identifying and discriminating areas of modest and significant corrosion as well as deformations including areas of significant weld slag, which could prohibit the insertion of the liners.

Once high quality data was available, pinpoint repairs were possible and the pipelines were then internally lined with a patented process that effectively provides a double containment system. A grooved liner and the host steel pipe create an annular space that is pressurized with air and remotely monitored. The system is able to detect even a small pressure drop in the annulus that would occur in case the steel pipe’s integrity is ever breached. In case a pinhole develops in the steel pipe, a repair can be conducted while the line continues to operate without interrupting CO2 service to the plant.

By applying these novel solutions, the rehabilitated pipelines will transport carbon dioxide to a revitalized fertilizer plant for the next 25 years in a safe and efficient manner.


PPSA members can book exhibition space. This includes a 100 word company description published in the delegate pack and on the website.

The exhibition is a great opportunity to network and find out about what's new in the industry.


  • One tutorial - £ 100 (+ VAT) per delegate includes lunch
  • Two tutorials - £ 175 (+ VAT) per delegate includes lunch
  • Pre-seminar evening reception - £ 50
  • Seminar – Member rate - £ 175*/£ 215 (+ VAT), Non-member rate - £ 255*/£ 290 (+ VAT).
  • Exhibition space (PPSA members only) - £ 120 (+ VAT).

* Early bird bookings before 5th October.

Register Now

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