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Case Studies

Maiden voyage for Claxton’s new cut verification technology on Gulf of Mexico project
Drilling and decommissioning

Maiden voyage for Claxton’s new cut verification technology on Gulf of Mexico project

Claxton was originally approached by an operator in August 2017 to support a high-profile pile cutting decommissioning work scope. The requirement was to abrasively...
Recovery of drilling fluid circulation and placement of environmental barrier using SWAT™
Drilling and decommissioning

Recovery of drilling fluid circulation and placement of environmental barrier using SWAT™

A contractor of a North Sea operator contacted Claxton to devise a plug and abandonment solution for a subsea well on a field located in the northern North Sea in the...
Abrasive severance services for slant and vertical platform well abandonments
Drilling and decommissioning

Abrasive severance services for slant and vertical platform well abandonments

The provision of well abrasive severance services at extreme angles by Claxton for slant and vertical platform well abandonments may be a ‘first’ in the UK for...
Bespoke overshot solution caps collapsed wells in the Middle East
Drilling and decommissioning

Bespoke overshot solution caps collapsed wells in the Middle East

An operator of an aged offshore platform in the Middle East urgently required a remedial solution when they were suddenly faced with two wells collapsing into the sea.
A well severance solution for three subsea tieback wells and eight dual-bore wells
Drilling and decommissioning

A well severance solution for three subsea tieback wells and eight dual-bore wells

As part of their Gulf of Thailand Asset Retirement Programme, Chevron was looking for a well severance solution for three subsea tieback wells and eight dual-bore wells...
Delivery of a bespoke virtual management system
Asset integrity and monitoring Drilling and decommissioning Geo-services

Delivery of a bespoke virtual management system

Fairfield Energy, an experienced, late-life asset and decommissioning operator approached UTEC to find new alternatives to conventional methods of workflow management...
Monitoring accumulated conductor fatigue damage in the Gulf of Mexico
Asset integrity and monitoring Drilling and decommissioning

Monitoring accumulated conductor fatigue damage in the Gulf of Mexico

Analysis carried out before the project had given the conductor a fatigue life of just eight days, identifying the conductor top weld as the fatigue critical location...
Drilling with a sixth generation semi-sub in shallow water
Asset integrity and monitoring Drilling and decommissioning

Drilling with a sixth generation semi-sub in shallow water

The client became concerned about the implication of the campaign on the fatigue life of the wells, as the pre-drilling analysis had predicted a poor fatigue response...
Drilling at the limit of a jack-up’s rated water depth
Asset integrity and monitoring Drilling and decommissioning

Drilling at the limit of a jack-up’s rated water depth

High predicted vessel motions combined with the weight of the HP riser and BOP led to integrity concerns for the wellhead and conductor. The operator requested from...