TotalEnergies and Libra Consortium to Develop Groundbreaking Subsea Gas Separation and CO2 Rejection Facility at Brazil’s Mero Field

TotalEnergies has announced the Libra Consortium’s final investment decision to establish a cuttingedge natural gas and CO2 separation and reinjection facility at the Mero field, located in the deep offshore pre-salt region of Brazil.

This pioneering project involves the deployment of a high-pressure subsea separation technology, known as HISEP®, which is designed to separate oil from CO2-rich gas at the ocean’s depths and directly reinject the gas back into the reservoir. This innovative approach is expected to minimize the volume of gas transported to the topside FPSO, thereby reducing greenhouse gas (GHG) emission intensity and enhancing the field’s production capacity. This technological advancement is a key component of the Libra Consortium’s research and development initiatives.

The HISEP® subsea separation pilot unit will be integrated with the Marechal Duque de Caxias FPSO (part of the Mero 3 project), which is currently in the construction phase. The Mero field, a unitized field operated by Petrobras with a 38.6% stake, involves a partnership with TotalEnergies holding 19.3%, Shell Brasil also at 19.3%, CNPC with 9.65%, CNOOC at 9.65%, and Pré-Sal Petróleo S.A (PPSA) owning 3.5%.