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BOURBON Peridot supporting Canadian Natural Resources for drill support

 Scope of Work:

In early 2015, the Bourbon Peridot, an IMR vessel in the BOURBON fleet, completed a support mission at the Cajun Express rig, managed by Canadian Natural Resources (CNR), on the Baobab field in Côte d'Ivoire. For several months, the vessel, equipped with its UHD ROV, performed the initial survey1 and metrology2 operations, before securing the various well drilling stages.

"These support operations are not very frequent, as rigs usually have their own ROVs and are therefore self-sufficient," says David Friedman, the vessel's shift supervisor. "In this case, the client wanted to be able to count on a backup ROV in case of technical problems, but also on a vessel to store the equipment used in drilling or, more conventionally, to resupply the rig. It turned out that in the end, the UHD ROV was the one used throughout the operation." 


The ROV is an essential tool for any drilling operation. The Peridot is equipped with FMC Technologies Schilling Robotics UHD ROV serial number #25. When you have to drill a well in several hundred meters of water, aiming at a target measuring about 1m2 at most, the ROV remains indispensable, for its high definition cameras and manipulator arms. After this operation, the Bourbon Peridot teams, of approximately 50 employees, will have closely overseen the drilling of five wells on the Baobab field, while providing logistical support to the rig.

"Drilling a well is a complex operation that involves several steps: marking the area to be drilled, preparing the pipes, installing the drill line, etc." adds David Friedman. "At such depths – in the Baobab field, about 1,200 m – the slightest deviation is costly. Even if the rig is a DP structure, it is important to make sure that the operation is going correctly, by being as close to the drilling area as possible. The ROV, which is eyes of the onboard teams, is the only thing capable of carrying out this mission." A high precision job, for example, the verticality of the drilling line must be controlled down to 1 or 2 degrees.

Field Summary:

The Baoboa subsea production field is located in the Block CI-40 off the Ivory Coast of Africa. The water depth is 1524-meters (5,000ft). Field equipment was manufactured by FMC Technologies. The contract scope consisted of project management, engineering, and manufacture of field equipment, including: 19 UWD wellhead systems; 14 EHXT production subsea trees; four EHXT production subsea trees; two six-slot production manifolds with two four-slot water-injection manifolds; control system; control umbilicals; Flowline jumpers and diverless connection system; 13 large flowline termination assemblies; vertical tie-in system (VECON), and tooling systems and WOCS. The service and installation assistance offshore was provided by a service contract between FMC Technologies and CNR. The project had a development time from order of the subsea system of 32 months with first oil in 30 months, making Baobab one of the most successful deepwater projects undertaken in the West Africa region.

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