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PROJECT PROFILE · DEEPWATER FPSO

Mero

A five-FPSO phased development of a major Santos Basin pre-salt field

Production and Technology Expansion

Project Overview

Mero is a major ultra-deepwater pre-salt field in Brazil’s Santos Basin, about 180 to 190 kilometres off the coast of Rio de Janeiro state in water depths of approximately 2,100 metres, with Petrobras as operator. Project interests are Petrobras 38.6%, Shell 19.3%, TotalEnergies 19.3%, CNODC Brasil 9.65% and CNOOC Petroleum Brasil 9.65%; PPSA represents the Brazilian federal government’s 3.5% interest in the adjacent non-contracted area.

The development began with the Pioneiro de Libra early production system and then progressed through Guanabara for Mero 1, Sepetiba for Mero 2, Marechal Duque de Caxias for Mero 3 and Alexandre de Gusmão for Mero 4. As of 19 August 2026, all five FPSOs were producing. When Mero 4 started production in May 2025, Petrobras reported installed oil-production capacity of 770,000 barrels per day.

FPSO Development and Engineering Scope

Code FPSO Milestone Contractor / operator Engineering scope Subsea scope
Mero 1 Guanabara MV31 First oil: May 2022
180,000 bpd		 MODEC
22-year lease and operations and maintenance		 Dalian Shipbuilding Industry
VLCC hull conversion, module fabrication, installation and integration, and commissioning		 TechnipFMC
Subsea EPCI for risers, flowlines, umbilicals and associated systems
Mero 2 Sepetiba Production: Dec 2023
Lease start: Jan 2024
180,000 bpd		 SBM Offshore
Design and construction, installation, long-term lease and operations		 CMHI Jiangsu: CMHI-220 MPF A hull
BOMESC: topsides modules, hull integration, final assembly and commissioning		 TechnipFMC
Subsea EPCI for risers, flowlines, umbilicals and associated systems
Mero 3 Marechal Duque de Caxias First oil: Oct 2024
180,000 bpd; later increased to 200,000 bpd		 MISC
FPSO supply and operations and maintenance over a 22.5-year charter		 CIMC Raffles: hull conversion, all-module fabrication and integration, and systems commissioning
Siemens Energy: eight topsides modules and EPC for power-generation, compression and electrical systems		 TechnipFMC
HISEP subsea processing iEPCI and lifecycle services
Mero 4 Alexandre de Gusmão First oil: May 2025
180,000 bpd		 SBM Offshore
Design and construction, installation, long-term lease and operations		 Shanghai Waigaoqiao Shipbuilding: MPF 4 hull
COSCO Shipping Offshore, Qidong: topsides integration and onshore commissioning		 —

Participants and roles

Key participants and their project roles.

  • Brazil

    Petrobras
    Operator

    Operator of the Mero field, responsible for phased development, FPSO lease management and technology deployment.

    Scope
    Ownership and governance
    Relationship start
    2010

  • Japan

    MODEC
    Shipowner / lessor

    Engineering, procurement, construction and mobilization of FPSO Guanabara MV31, followed by a 22-year lease and operations and maintenance services for Mero 1.

    Scope
    Offshore facilities and operations
    Relationship start
    19 Dec 2017

  • Netherlands

    SBM Offshore
    Shipowner / lessor

    Design, construction, installation, long-term lease and operations services for FPSO Sepetiba and FPSO Alexandre de Gusmão, serving Mero 2 and Mero 4.

    Scope
    Offshore facilities and operations
    Relationship start
    11 Dec 2019

  • 马来西亚

    MISC Berhad
    Shipowner / lessor

    Supply of FPSO Marechal Duque de Caxias and operations and maintenance services during the 22.5-year charter for Mero 3.

    Scope
    Offshore facilities and operations
    Relationship start
    17 Aug 2020

  • 英国

    TechnipFMC plc
    EPCI contractor

    Subsea EPCI for the Mero 1 and Mero 2 risers, flowlines and umbilicals, plus the Mero 3 HISEP subsea processing iEPCI scope and lifecycle services.

    Scope
    Subsea systems
    Relationship start
    6 Feb 2019

  • China

    Dalian Shipbuilding Industry Co., Ltd.
    Integration assembler

    VLCC hull conversion, module fabrication, module installation and integration, and commissioning for FPSO Guanabara MV31.

    Scope
    Offshore facilities and operations
    Relationship start
    2 Aug 2018

  • China

    BOMESC
    Integration assembler

    Topsides module fabrication, hull integration, final assembly and commissioning for FPSO Sepetiba.

    Scope
    Offshore facilities and operations

  • China

    China Merchants Industry
    Hull builder

    Construction and delivery of the CMHI-220 MPF A Fast4Ward hull for FPSO Sepetiba at the Haimen yard of CMHI Jiangsu.

    Scope
    Offshore facilities and operations
    Relationship start
    25 Jul 2019

  • China

    CIMC Raffles
    Integration assembler

    Hull conversion, fabrication and integration of all modules, and FPSO systems commissioning for FPSO Marechal Duque de Caxias.

    Scope
    Offshore facilities and operations

  • 德国

    Siemens Energy
    Topsides builder

    EPC delivery of eight complete topsides modules, including power generation, compression and electrical systems, with installation and commissioning support for Mero 3.

    Scope
    Offshore facilities and operations
    Relationship start
    19 Mar 2021
  • COSCO Shipping Offshore (Qidong)
    Integration assembler

    Topsides integration and onshore commissioning for FPSO Alexandre de Gusmão at the COSCO Shipping Offshore yard in Qidong.

    Scope
    Offshore facilities and operations

  • China

    Shanghai Waigaoqiao Shipbuilding Co., Ltd.
    Hull builder

    Construction of the Fast4Ward MPF 4 hull for Mero 4 FPSO Alexandre de Gusmão.

    Scope
    Offshore facilities and operations