Flexlay Case Study

Flexibles installation offshore Brazil

Enabling efficient field development offshore Brazil


Trident Energy sought to relocate two flowlines and install an umbilical in the Marimba field in Campos Basin, offshore Brazil. The scope of work was to disconnect the production and gas lift flowlines from an existing MA-1 tree, recover to surface for the installation and testing of a vertical connection module, and then connect to the new MA-34 subsea tree. In addition, a new subsea control umbilical was to be installed to provide functionality to the tree. Having the relevant equipment to perform the flex-lay operations whilst also being able to provide optimal project engineering support, MDL was engaged for the planning and execution of the operations.

MDL Solution

MDL delivered project engineering support together with the complete back-deck spread to perform the flex-lay operations. The spread consisted of an MDL Generation 3 Reel Drive System, 2-track lay tensioner, hinged chute, A&R winch and a bespoke hang-off platform to facilitate the mid-line connections. The equipment was mobilised on a Construction Support Vessel (CSV), the Normand Frontier. MDL also supplied design and engineering services to manufacture a grillage frame for the integrated hang-off platform locally in Brazil.


The complete solution included an analysis of the challenges and delivery of a bespoke solution, enabling MDL to add value across the entire project life cycle. MDL delivered an innovative approach that allowed for successful project implementation despite tight schedules and limited access to purpose-built solutions and generated additional benefits, such as cost efficiencies, on top of that. The successful completion of Trident’s first Brazilian subsea campaign to enhance production from the Pampo field resulring in the production of 4,400 barrels of oil per day.

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