DRILLING & EXPLORATION


Helix Energy Solutions Awarded Multi-Year Riser-based Well Intervention Work in the


US Gulf of Mexico Helix Energy Solutions Group, Inc. (NYSE: HLX) has been awarded a multi­year riser­based well intervention scope of work by a major operator for the charter of the Helix Q5000 and 15K Intervention Riser System in the US Gulf of Mexico.


The awarded scope of work is currently contemplated to commence in 2022 on a call-off basis and includes well intervention and production enhancement activities. The Q5000 and 15K IRS system are part of the Subsea Services Alliance which combines the collective strengths and capabilities of Helix and Schlumberger.


The Q5000 DP3 well intervention vessel is a second-generation design based on the successful Q4000 MODU. The Q5000 provides a stable platform for a wide variety of tasks, including subsea well intervention, field and well decommissioning, installation and recovery of subsea equipment, well testing and subsea construction activities. The Q5000 features a 750 ST tower capable of fulfilling all traditional derrick roles, plus a deepwater crane with lifting capacity to 440 ST and a work crane rated to 176 ST.


The 15K IRS can be utilized for wireline intervention, production logging, coiled-tubing operations, well stimulation and full plug and abandonment operations. The 15K IRS enables access to both vertical and horizontal subsea trees in water depths down to 10,000 ft.


Royston Completes Engine Overhaul


Work on Stena Drill Ship Marine engineering and propulsion specialist Royston has assisted in the overhaul of diesel power plant on­board one of Europe’s largest drilling ships as it sailed while on passage.


Drawing on its international capabilities and resources, a five-strong team of Royston engineers undertook the 48,000-hour overhaul of a Wartsila W16V16 diesel generator onboard the 228m length Stena Carron, as part of a planned maintenance programme.


The job was completed as the ship sailed from the Caribbean to a position off the Guyana coast, where it is currently carrying out drilling operations.


This saw the replacement of parts where necessary as part of a 48,000hr service. This included inspection


44 www.sosmagazine.biz October 2021


and refurbishment work on the crankshaft main and thrust bearings, main bearing jacks, connecting rods, piston rings, crowns and skirts, along with the installation of new big end bearing shells.


Royston engineers also completed the replacement of OEM overhauled turbocharger cartridges and repairs to the turbocharger exhaust manifold, carried out upgrades to intermediate gears, camshaft gears, and the speed governor. Following completion of the work, the generator was fully checked and tested to ensure maximum operational capacity.


Fraser Scott, Engineering Superintendent at Stena Drilling, said: “Royston has completed another quality job for us during these challenging times. It reflects the experience and


expertise they bring to their work, going over and above expectations in support of our vessel fleet operations and maintenance.”


Shaun Cairns, Royston’s Operations Manager on the contract, said: “This latest project for Stena Drilling shows that regardless of a vessel’s location in the world, and the status of its engines, we have the flexibility and resources to respond rapidly with a highly skilled and efficient engineering team.”


Built in 2008, the Stena Carron is one of six vessels in the Stena Drilling fleet and is a sixth-generation harsh environment, multi-purpose dynamically positioned drillship, capable of drilling to depths up to 10,000 ft. It has managed pressure drilling capabilities, a wireless unit tower and enhanced drilling fluid storage.


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