Myanmar MD-7 Ultra-Deepwater Project
Location: Moattama Basin, Andaman Sea, Republic of the Union of Myanmar
Objective: Mooring of the Noble Clyde Boudreaux in 2,300m of water, with minimal access to additional mooring equipment given the remote location.
Solution: Delmar deployed a hybrid mooring system consisting of the rig’s self-contained eight conventional wire/chain/drag anchors combined with four insert polyester/chain/drag anchors to improve the station keeping performance.
Summary: Delmar Systems, Inc. was awarded the engineering, mooring equipment rental, and installation contract for the Noble Clyde Boudreaux on the MD7 well in the ultra-deepwater of the Andaman Sea. The rig was safely and efficiently moored on location for PTTEP and Noble Drilling while setting a record for the region.
More Detailed Scope of Work:
Delmar Systems, Inc. was awarded the engineering, mooring equipment rental, and installation contract for the Noble Clyde Boudreaux on the MD7 well in the ultra-deepwater of the Andaman Sea. The rig was safely and efficiently moored on location while setting a record for the region.
Delmar was approached about the project when it became clear that the mooring contractor the client had been working with was in over their head. As the leader in deepwater mooring, Delmar stepped in to provide the requisite expertise.
Delmar worked with Noble Drilling and PTTEP to refine the deployment and recover procedures to tackle the more time-intensive polyester insert legs off the critical path. Job- and vessel-specific procedures were generated to work around the strengths and weaknesses of the client selected anchor handling vessels.
The Delmar mooring plan was crafted to incorporate client-owned mooring equipment to the extent possible. Where additional mooring gear provisions were needed, Delmar mooring equipment inventory available in Singapore was tapped.
Detailed line configuration drawings and lists were generated identifying each component in the system. The dynamic motion mooring analysis from Delmar provided Noble and PTTEP confidence that the designed mooring system was up to the task.
Working together, Delmar Engineering and Operations teams developed step-by-step deployment and recovery procedures. Mooring engineers numerically simulated the rig move from start to finish to determine the expected loading on the mooring gear, AHTS vessels, and drilling rig winches.
Storyboard drawings were generated and incorporated into the procedures to ensure that all parties were well informed of the plan and related tasks. Detailed payout and corresponding load schedules were developed for reference during offshore operations.
Mobilizing the anchor handling vessels in Singapore, Delmar outfitted them in a coordinated and strategic manner to facilitate deployment on location. An additional 8,000m of polyester rope, 3,000m of high strength wire rope, anchor handling tools, spares, and consumables deployed for the job.
The Delmar offshore team mobilized to Myanmar for deployment on the two AHTS vessels and the rig. Delmar coordinated the rig move, providing direction and oversight to the AHTS vessels to safely and efficiently run and recover the mooring equipment in the remote ultra-deepwater location. The vessels demobilized the supplemental mooring equipment in Singapore upon a successful mooring campaign.