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USA: Helix Marks Strong Market Demand for Deepwater Well Intervention Services

Helix Energy Solutions Group, Inc. announced that it has been awarded its initial customer contractual commitments for the Helix 534. The Helix 534 was acquired in August from Transocean and is undergoing modifications and upgrades necessary for conversion into a well intervention vessel at the Jurong Shipyard in Singapore.

The Helix 534 is scheduled to sail from Singapore during the first quarter of 2013 and after transit to the Gulf of Mexico, is expected to be placed into service in late second quarter 2013. Backlog for the Helix 534 involves work in the Gulf of Mexico and extends into 2016.

Meanwhile, the Q4000 has extended its strong contractual backlog through 2014, with strong customer interest into 2016.

Helix also announced that the Skandi Constructor has also received its initial contractual awards. The Skandi Constructor is a chartered vessel and is expected to enter the Helix well intervention fleet in the spring of 2013. Its initial contract involves work in the North Sea and follows with a project off the eastern Canadian coast.

Helix’s two existing North Sea based well intervention vessels, the Seawell and the Well Enhancer, have been awarded customer contracts into the fourth quarter of 2013.

Owen Kratz, President and Chief Executive Officer of Helix, stated, “The recent contract awards for our two new additions to the well intervention fleet, the Helix 534 and the Skandi Constructor, as well as the growing backlog for our existing fleet, reflects the strong market demand for deepwater well intervention services as well as Helix’s market leadership for these services. Furthermore, customer interest for our newbuild semisubmersible well intervention vessel, the Q5000, remains high. The Q5000 is currently under construction at the Jurong Shipyard in Singapore and is scheduled to enter the fleet in early 2015.”

Subsea World News – USA: Helix Marks Strong Market Demand for Deepwater Well Intervention Services.

USA: MOSS Reviews Permanent Platform Wire Replacement

InterMoor successfully replaced (8) spiral-strand platform wires on a permanent production facility in May 2011 without requiring a platform shutdown or loss of production. The operation was completed using a single Construction Anchor-Handling Vessel (CAHV) at a significant cost savings from the traditional method involving a derrick barge.

Each mooring line consisted of unjacketed spiral-strand wire at the fairlead, two sections of jacketed spiral strand in the water column and studless chain at the seafloor. Syntactic-foam submersible buoys had been installed at each spiral-strand wire connection, so each mooring line had two buoys.

Only the platform wires were to be replaced, and the remaining mooring components including the buoys were to be reused. Protecting the existing components from damage during recovery and reinstallation posed several unique challenges. One of the main operational challenges was to design a way to bring the upper buoy and platform wire out of the water and secure them on deck so that the old platform wire could be disconnected. To accomplish this, InterMoor designed and installed a custom hang-off porch at the CAHV’s stern. The porch used a combination of pneumatic and hydraulic cylinders to manipulate and align the entire porch as each buoy connection was recovered and deployed. The porch also had separate stoppers for the socket connections and a removable cradle for the buoy. Another operational challenge was the unknown condition of the buoys themselves, particularly since they were to be reused on the replacement wires. There was no industry experience at the time in retrieving foam buoys that had remained submerged at depth for over a decade. This paper will explore these challenges and others in more detail as well as the steps that were taken to successfully overcome them.

Subsea World News – USA: MOSS Reviews Permanent Platform Wire Replacement.

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