A guide for a cost-effective rigless well abandonment project for platforms

Posted by Andy Norman on 03-Mar-2016 14:20:19

Rigless decommissioning is defined as an application that is “not requiring intervention from a drilling rig”. While you may know this already, what you may not know is that Claxton Engineering was involved in the world’s first ever rigless platform well abandonment campaign on the Esmond, Forbes and Gordon field over twenty years ago.

Due to this innovation and two decades of experience in the field, the Claxton team, fronted by Senior R&D Decommissioning Engineer Tom Mason, has created a webinar for a cost-effective rigless well abandonment project for platforms.

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Topics: decommissioning, well abandonment

Infographic: 30 things you didn’t know about Claxton Engineering

Posted by Andy Norman on 02-Nov-2015 16:23:18

2015 marks our 30th birthday here at Claxton Engineering. To celebrate, we’ve created an infographic of 30 facts you may not know about us – scroll down to see them all…

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Topics: decommissioning, offshore asset life extension, drilling risers, well abandonment, offshore and downhole cameras, conductor centralizers, upstream industry insight, north sea

What do the new well abandonment guidelines mean for the offshore oil and gas industry?

Posted by Andy Norman on 06-Aug-2015 16:53:27

After a 20 year gap, Oil & Gas UK have published their latest set of guidelines in a bid to improve cross-industry understanding of issues in well abandonment techniques and understand the costs of abandonment better.

The Guidelines for the Abandonment of Wells Issue 5, provides an updated framework for operators on the decision-making process that should accompany any well activity, as well as considerations engineers must take during all phases of decommissioning. This includes a minimum criteria to ensure isolation of fluids within the wellbore and surface bed are isolated.

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Topics: offshore asset life extension, well abandonment

The one thing to consider when choosing a well abandonment contractor

Posted by Jamie Hall on 13-Jan-2015 13:30:00

Claxton’s SABRE™ abrasive cutting system was used to abandon the Camelot fields in the North Sea including the complete removal of Camelot Alpha.

Years in the planning and hugely complicated to bring all stakeholders together for one project, well abandonment projects can spill over time and over budget.

As forecast expenditure on decommissioning continues to increase, with operators racking up £14.6 billion’s worth in 2014, it is important to find and work with a contractor that are both reliable and experienced.

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Topics: decommissioning, well abandonment

Four key North Sea Well Abandonment Projects

Posted by Jamie Hall on 05-Nov-2014 10:30:00

As the North Sea is set to experience a wave of well abandonments over the next 10-20 years, it is important for operators to  find cost effective and reliable solutions to abandon wells and decommission their assets. The North Sea already has a strong heritage of successful abandonments and decommissioning campaigns to draw experience from - as these four case studies from Claxton’s work in the region demonstrate.

Camelot Alpha

The Claxton SABRE™ abrasive cutting system is capable of simultaneously severing all the casings in a well, regardless of casing loading, eccentricity or contents.

The complete decommissioning of the North Sea Camelot fields including the removal of Camelot Alpha began in 2012. Initially the plugging and abandonment of the fields' six platform wells was completed and was followed by the severance of the well casings 5 metres below the seabed.

Claxton used its SABRE™ internal abrasive cutting system to sever all casings within the Alpha wells simultaneously, regardless of the loading on the casings or any eccentricity.

The system uses a mixture of air, water and abrasive garnet at up to 1000 bar to cut through the steel casings and any cement within the annuli.

SABRE™ has been used successfully on over 75 campaigns and provides operators with a fully robust option to severe multi-string casings internally – with the added benefit of finite control of the elevation of the cut.

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Topics: well abandonment

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