Operational late life stages

Abstract

The article analyzes the stages of the end of the operational life of offshore oil and gas production units, based on the guidelines of Oil & Gas UK (OEUK), proposing their adaptation to the Brazilian offshore scenario, with an emphasis on floating platforms. Decommissioning is characterized as a strategic phase in the asset life cycle, marked by high technical, regulatory, and environmental complexity, which requires advance planning, adequate governance, and rigorous risk management. Five stages are presented — End of Life, Hot Shutdown, Cold Shutdown, Removal, and Disposal — highlighting the need to reassess operational and maintenance routines without compromising safety. The paper also discusses disposal scenarios, such as dismantling, recycling, and reuse of the hull, emphasizing the use of temporary layup as an alternative for cost reduction and greater operational efficiency.