Hook-up

Subsea services company InterMoor has provided Anadarko Petroleum with rapid hook-up services for its Heidelberg truss spar in the deepwater of the Gulf of Mexico.

At a water depth of 5,300ft, the 80,000bbl/d spar was hooked-up to three mooring lines in Green Canyon block 860, offshore Louisiana.

The original contractor of the project resumed the job after the hooking-up work was finished, and completed the remaining six mooring lines along, as well as the spar installation.

InterMoor said that the company initiated the engineering in March, with offshore work beginning in early June.

InterMoor manager of projects Todd Veselis said: "Our client required a high level of responsiveness to ensure the project remained on schedule.

"Our client required a high level of responsiveness to ensure the project remained on schedule."

"Our extensive experience in mooring all types of floating oil and natural gas facilities and our ability to adapt our previous procedures in just a month meant we could mobilise vessels quickly and efficiently, while assuring safety in execution."

InterMoor provided crews for each of the five vessels that were mobilised from Fourchon, Louisiana, US.

More than 40 InterMoor staff on two tugs and three anchor-handling vessels were mobilised.

The main anchor-handling vessels included the Kirt Chouest and the Dino Chouest, with a third one acting as a support between them and the platform.

These vessels, including McDermott’s DB 50, maintained station keeping for the spar and concluded the operations for hook-up to make the spar storm safe.


Image: InterMoor hooks up 80,000bbl/d spar to three mooring lines in Green Canyon block 860. Photo: courtesy of InterMoor.