Cutting the Cost of Decommissioning - Oilfield Technology April 2017

The operator of Tubarao Azul field contracted InterMoor do Brasil to plan and execute part of the field decommissioning work.
The topic of oil and gas field decommissioning has been on the table in Brazil for a while. However, it gained more attention after the oil price started to fall, challenging operators to re-evaluate the financial return of the producing oilfields.

The Tubarao Azul field is located in the Campos Basin, at a water depth of approximately 120m, 45 nautical miles from Cabo Frio, Rio de Janeiro, Brazil.
Oil production began in 2012 followed by the connection the 3rd and last well on the FPSO in 2013.
Among several activities involved in the FPSO disconnection, InterMoor do Brasil's scope of work consisted of:
• providing tow masters for heading control and station-keeping during turret skid operations;
• developing engineering procedures and risk analysis for disconnection and abandonment of the production buoy;
• developing procedures and dynamic analysis for the Cone Seal Plug overboarding from the support vessel’s deck (without crane assistance);
• providing the DGNSS positioning system throughout the entire production buoy connection and disconnection campaign;
• providing offshore personnel, including tow masters, marine superintendent, installation engineer, vessel coordinator, winch operators and offshore surveyors to execute the offshore campaign.

For more details on the various phases of work, download the full article from the column to the right.

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