Conbit partners with Premier Oil to install offshore double-lift boom system

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Conbit’s team recently installed three deck extensions and three modules that were located out of the reach of a crane at the Anoa Field in Indonesia. The project was to increase the accommodation capacity there from 51 to 67 pax, and to add an additional Multi-Purpose Room to the facility.  

To prepare, Conbit made a site visit in early 2019 developing a technical plan for this integration. One of the challenges was that the current design of the platform extensions needed to be modified for an installation with minimized offshore exposure.
 
To further enhance safety, a double-lift boom system, capable of lifting up to 10t directly from the single supply vessel on-site was built specifically for the project.
 
“Conbit designed a tailored solution adapting to all changes along the way while working in close consultation with us. The team also overcame all challenges and urgent demands without any delays or disruption,” a spokesman for Premier Oil said.
 
The execution phase started at the end of 2020 due to challenges from the weather and Covid-19 delays. This phase was scheduled on site for 17 days. The crew for the offshore execution included; a construction manager, winching team, and a colleague to support lift procedures from the supply vessel.
 
Dynamic and static load tests were first conducted with water bags to ensure the lifting system was robust enough. The deck extension and modules were then raised via a temporary lift system, operated from the platform of a supply vessel located near the designated installation location. 
 
After the deck extension was installed on the platform, temporary living quarters were placed on this extension using lift lines and skidding equipment. By lowering down the Multi-Purpose Room on top of one of the placed living quarters, the last project phase was complete.
 
Conbit delivered the project above expectations by managing to complete three large lifts during a single day that were originally scheduled to be executed within three days. This efficiency in execution helped the customer to minimize disruption on the platform.