Well Enhancer Completes First Well Intervention Job in the North Sea for Nexen Petroleum UK

Helix Well Ops UK, a subsidiary of Helix Energy Solutions Group Inc, announced today that the newest addition to its global well intervention fleet, Well Enhancer, has successfully completed her inaugural well intervention project for Nexen Petroleum UK on the Buzzard S2 well in the North Sea, 60 miles east of Aberdeen. 

The Subsea Intervention Lubricator, (SIL), a 7-3/8” bore single-trip system designed and built in house by Helix Well Ops UK, was successfully deployed via the vessel’s integrated skidding and handling system. 

Working in adverse weather conditions with significant wave heights in excess of five metres and winds of 45 knots, heave at the moonpool rarely exceeded two metres and the vessel’s performance exceeded expectations.

Helix believes that the Well Enhancer, built at the IHC Krimpen shipyard in Rotterdam, is the world’s most advanced well-intervention/diving support vessel in operation. 

Steve Nairn, Vice President of Helix Well Ops UK, said: “The Well Enhancer’s moonpool design and skidding system, coupled with our ability to disconnect and reconnect the control umbilicals subsea, enabled us to work safely in weather conditions that would have sidelined other intervention vessels. These features, unique to Well Enhancer, allowed the operation to be completed on schedule in spite of difficult weather.” 

Over the course of the ten day operation, Well Enhancer performed production logging, fluid sampling and wireline services, including sand detection and flow profiling on the well. 

The S2 water injection well was entered with a combined log/fluid sampling service, with additional sand detection and flow profiling equipment onboard.  All on-board systems were utilised successfully. 

Mr Nairn added: “It could be said that the Well Enhancer is the only brand new intervention vessel with a 15-year track record. When we first began the design process, we took advantage of the lessons learned from operating our other North Sea intervention vessel, Seawell. That experience led us to include the SIL and skidding system in the new vessel’s design and include provisions for a coiled tubing intervention system as well.” 

Nexen Petroleum UK said they were delighted with the results of the well intervention, describing the operation as a “fantastic achievement”. 


Note to Editors 

The MSV Well Enhancer is a 10,000+ ton, 132m long vessel, based on a Merwede Type-22 design. 

The Well Enhancer features a Huisman Itrec multi-purpose tower for deployment of its subsea intervention tools and equipment. The system operates in water depths to 1000 meters while handling 150 metric tons, and features both active and passive heave compensation. 

The vessel includes an 18-man saturation diving system rated to 300 metres, with four decompression chambers and two dedicated diving moonpools. 

Well Enhancer is specifically engineered for cost-effective well support, intervention and construction operations in the North Sea. The vessel was built in accordance with Det Norske Veritas rules for ships, UK Maritime and Coastguard Agency Regulations and also meets UK Health and Safety Executive requirements. 

Well Enhancer is a full DP3 vessel and can engage in well support, intervention and construction operations around the world. 

Helix Well Ops UK is engaged in rig alternative subsea well intervention and drilling.  

For more information, please contact: 

In the UK:

Steve Nairn

Vice President, Helix Well Ops UK

+44 (0)1224 351802


In the USA:

Cameron Wallace

Director of Marketing and Investor Relations

Helix Energy Solutions Group, Inc.

+1 281 848 6543


Issued on behalf of Helix Well Ops UK by Sure Public Relations. For more information please contact Stephen Rafferty on +44(0)7980 598764 or email moreinfo@surepr.co.uk






Contact: Stephen Rafferty
Phone: +44(0)7980 598764
Email: moreinfo@surepr.co.uk
Website: http://www.helixesg.com