When an old wellhead meets a modern BOP, loading can become a problem

Older subsea wells can have conductors and wellhead systems that were never designed to support the size and weight of today’s BOP stacks. BOP tethering can provide a way to manage that challenge.

When an old wellhead meets a modern BOP, loading can become a problem

Older subsea wells can have conductors and wellhead systems that were never designed to support the size and weight of today’s BOP stacks. BOP tethering can provide a way to manage that challenge. By connecting tether lines from the BOP frame to anchors or piles on the seabed, lateral movement of the BOP can be significantly reduced. This can help lower wellhead loading, improve fatigue life and extend operating limits during intervention or abandonment operations.

In one North Sea abandonment project, analysis showed that tethering reduced peak wellhead loading by a factor of five and improved fatigue life by a factor of 200 compared with the untethered configuration.

Read the full case study here.

Image credits: Trendsetter Vulcan Offshore

10 years Long Service Award for Kirsten

Reaching a 10-year milestone is quite an achievement these days. It’s a two-way partnership and we feel very proud that many of our staff are invested into what we do.

10 years Long Service Award for Kirsten

Reaching a 10-year milestone is quite an achievement these days. It's a two-way partnership and we feel very proud that many of our staff are invested into what we do. We recently celebrated 10 years of dedication from Financial Controller, Kirsten Campbell, who joined us in 2015.

Kirsten joined the business as a part-time Finance Assistant. From day one, she demonstrated exceptional diligence and strong work ethic. Within three months, her impact earned her a well-deserved promotion to Financial Controller, and now she is a valued part of the management team at AS Mosley.

Commenting on Kirsten’s journey, Andrew Mosley, Director at AS Mosley, said: “We have a growing team of long service employees and Kirsten’s loyalty, enthusiasm and commitment make her a very welcome member. She has transformed the financial structure of the company and created a wealth of tools to promote the commercial health of the business. Kirsten has demonstrated excellent multidisciplinary skills and can turn her hand to many different tasks and challenges. She is a key employee and a highly valued member of the senior management team. Well done Kirsten, and thank you for your dedication and hard work. We very much look forward to working with you over the next ten years!”

Kirsten was presented with an Award from AS Mosley at a team lunch in October. Her thoughts on AS Mosley are captured below:

Kirsten Campbell: Q&A

Do you work full time/part time? 80% (4 days a week)

What do you enjoy most about your work? I enjoy how varied it is; I always have. When you work in a small company you have to take on tasks and projects that would never hit your desk in a larger organisation. There is never a dull moment, and always an opportunity to contribute.

What’s one highlight from your time with AS Mosley? Working with talented people who all bring something different to the table and learning from each other as we go.

What have been the ups and downs? The ups are for sure the people I’ve met, and the opportunity to grow professionally. The downs, the cyclical nature of the industry has brought difficult times over the years.

What keeps you motivated at AS Mosley? I am motivated to stay with the company because I have the best of both worlds at AS Mosley, I get to exercise the financial side of my career and also be a contributor to business decision-making.

Who has influenced or supported you most during your time with AS Mosley? Andrew [Mosley]. He has always challenged me to push beyond my comfort zone and supported me over the years.

What advice would you give someone starting their career with AS Mosley? Contribute to the conversation, be prepared to listen to the alternate opinion, as that doesn’t make you wrong, it makes you a contributor to the solution, and that’s valued.

What are you looking forward to in the next chapter at AS Mosley? I think the coming years at AS Mosley will bring opportunity for personal and professional development, and I am looking forward to working with the team through whatever adventure or challenge that may bring.

One word to describe the last 10 years? Evolving

Well done Kirsten, and good luck in the next chapter!

Update on development at Kingswells House

Work is underway on what will be AS Mosley's new home at Kingswells House

In October 2025, the digger was on site to excavate the north bank and build the foundations for a retaining wall. This will shore up and support the ground containing the ancient Holly hedge which is mentioned in early documents describing the gardens and grounds. Just before Christmas we began work on the wall build; however, progress was delayed due to the severe weather – not least the 18 inches of heavy snow cover. An inconvenience, but also a reminder of just how beautiful this 12-acre site can be throughout the four seasons. The gardens were transformed into a secret Winter Wonderland – right in the heart of the Prime Four Business Park!

Preparations for the access footpath to run alongside the main drive are also underway. As part of this we had to clear the water course to prevent flooding over the path in the lower drive area.

The springs to the Den Burn feed into the water course and further work will be required to prevent back-up during heavy rain. In addition to this, we have moved the oil tank to its new position away from the house. This has enabled us to connect the boiler and fire up the wet heating system. Warmth is an important consideration for these historic buildings and we have managed to stabilise the moisture inside the house to 50%. This is well within the target range 40%-60% for a happy / healthy building. This should improve further when we dig a French drain around the outside of the building and weatherproof the walls.

Renovations to the main house will start in March 2026 when we commence the slating and harling refurbishment. The unsightly garage building will be demolished in February in preparation for these works. New Bathrooms and toilets are being ordered and will be installed after starting the outside works. Internal renovations can then commence – wiring, flooring, finishings and decoration.

Furthermore, we are now working on the contract with the quantity surveyor. The contract will be for the new build extension to replace the garage with an open-plan office. This will be started once we have completed renovations to the house later in the year.

It is good to have all the planning and building warrant issues behind us. For the first time since we purchased Kingswells House in the summer of 2020, we are able to make real progress.

More updates to follow...

Green light for AS Mosley’s new headquarters

Councillors overturn planners’ decision for development at Kingswells House development to go ahead. Detail design will start early next year, with a view to relocating in 2026 from our current location at Oyne, Aberdeenshire.

After the disappointment of our planning application being rejected in the summer, we are grateful to local Councillors for overturning the planners' decision, after seeing the potential in what we’re doing and the importance of giving this historic building a new life. Detail design will start early next year, with a view to relocating in 2026 from our current location at Oyne, Aberdeenshire. Thank you to our architects, McWilliam Lippe Architects in Inverurie, for their enthusiasm on this project, and their continual support.

We can now move ahead with this project and look forward to relocation next year. To read the full Insider article, click here.

West of Shetland Case Study

Learn how our team worked on this Umbilical Assessment project in West of Shetland, which endures some of the worst environmental conditions in the world.

West of Shetland has some of the worst environmental conditions in the world. In this project, AS Mosley undertook an assessment of the Umbilical used to control the subsea equipment of a riserless intervention system. The assessment determined the required tensions to prevent excessive deflection and line payout as well the required specification of a heave compensated winch. This allowed operations to be carried out with high levels of operability.

Read the full Case Study here: West of Scotland Umbilical Assessment

Rapid Screening of Multiple Wells with WellScreen

WellScreen is an innovation of AS Mosley, that has evolved over the last few years and has had a substantial impact in the oil & gas industry.

The tool allows for rapid screening of multiple wells to identify those, if any, that need in-depth analysis. WellScreen covers the full life cycle of the well, from initial vessel selection and well design, to drilling, completion and final abandonment. This approach can result in significant savings in both analysis spend and operational time. Find out more about WellScreen here.

AS Mosley gains SEQual approval

After completing an in-depth supplier exercise, involving a desktop assessment, we are very pleased to gain SEQual approval. SEQual is an energy industry portal, that was developed in 2021 to support procurement practices. Although it’s in its infancy, it is already highly regarded by peers, and is fast becoming the ‘go-to’ for procurement for many large players, providing a quality assurance that suppliers are “ready” for deployment, and saving procurement teams time in accessing various documentation individually.

We are proud to have robust management systems in place, which have been designed using specific principles and frameworks to help us meet and exceed various industry standards. These systems played a role in securing the SEQual registration, as well as the many other certificates and accreditations that we hold, including the following:

ISO 9001:2015
ISO 14001:2015
ISO 45001:2018
Achilles FPAL

As many in the industry will know, a huge amount of work, time, and effort is required to obtain each one of these certificates. The output is a few certificates, but the outcome is far greater – the processes and frameworks that these accreditations help us test and challenge makes for a stronger, and more efficient organisation, which we benefit from, but also our clients benefit too. It’s important to us, as a team, to keep investing in our systems for the greater good.

To find out more about our certificates and accreditations click here.

To find out more about SEQual, visit their website: SEQual Website.

Recruiting for Graduates

We excited to be recruiting again for more graduates. If you are about to graduate with (or currently hold) a bachelor’s degree in mechanical, civil, aeronautical engineering, naval architecture or related discipline, and are keen to embark on a career in analysis, then read on.

Graduate Analysis Engineers

We are looking for multiple full time Graduate Analysis Engineers to assist in the design and assessment of subsea exploration and production equipment and perform riser and wellhead analyses using Flexcom and Orcaflex software and non-linear structural analyses using ANSYS.

In return, you'll work for a friendly and welcoming organisation that invests in its people and has a range of benefits available to employees, which is based in a peaceful setting in Aberdeenshire, though hybrid working is available.

For more information and to apply click here.

AS Mosley wins prestigious innovation award

AS Mosley picks up Business & Product Innovation Award at Scottish FSB Awards 2023

We are extremely proud to have won an award from the Federation of Small Businesses (FSB) for Business & Product Innovation.

AS Mosley picked up the prestigious award yesterday (8th March) at the Voco Grand Hotel in Glasgow at a glitzy ceremony hosted by the FSB.

The award was given in recognition of developing WellScreen, and AS Mosley's involvement in Digital Twin technology.

WellScreen is a unique screening analysis tool that allows operators in the oil & gas industry to rapidly screen a number of wells at any one time. The tool tests for wellhead fatigue, and highlights wells needing more detailed analysis. The Digital Twin work was in collaboration with University of Strathclyde and Fugro, where we developed a methodology for a Digital Twin for Floating Offshore Wind Turbines.

Attending the event on behalf of AS Mosley, was Callum Methven (pictured), Principal Analysis Engineer, Andrew Mosley (pictured), Director, Eileen Cooper, Marketing Consultant of Limetree, and her husband, Andrew Cooper of Andrew Cooper Golf.

Andrew Mosley, Director at AS Mosley said: “This is fantastic news! We’re delighted to be recognised for the our innovative WellScreen tool, as well as our digital twin work. WellScreen has taken over five years to get it to where it is today and it’s having a huge impact on our industry and literally saving operators hundreds of thousands of pounds. We are grateful to our clients, for giving us the inspiration and motivation to develop WellScreen. Thanks also goes to our Digital Twin partners and, of course, our staff and dedicated team of expert engineers, who have made this success possible.”

AS Mosley will go on to represent Scotland in the UK Final on 18th May 2023.

Ladies’ Day event raises £5757 for North Rayne Primary School

AS Mosley was pleased to support Rayne North Primary school with their Ladies’ Day fundraiser last week at Drouthy Laird, Inverurie. In total, they raised a staggering £5757 for the Parent Council.

We were pleased to support Rayne North Primary school with their Ladies’ Day fundraiser last week at Drouthy Laird, Inverurie. In total, they raised a staggering £5757 for the Parent Council. Our very own Kirsten Campbell was involved in organising the event, attended by over 170 ladies. AS Mosley donated a Fossil handbag and a £100 voucher for Sinclair's in Inverurie. The funds raised will be used to buy a smart TV on wheels and to support the school’s library, with new books and reading resource. Well done to all involved.