The Atlanta Field is the world’s deepest subsea heavy oil development, producing 14° API crude with a viscosity of 250 cp at reservoir conditions. This paper details the design and implementation of the subsea multiphase pump solution that was deployed in Atlanta, including system design for high-viscosity boosting and engineering solutions to maximize reuse of existing subsea and topside equipment. This was key to ensure reliable, cost‑effective production.
Introduction
The Atlanta development was divided into two phases: an early production system (EPS) that entered operation in May 2018, and a full-field development (FFD) that began in December 2024. The EPS was developed with a satellite well architecture, wherein each production well is tied back directly to a floating production, storage, and offloading vessel (FPSO) through a dedicated flowline and riser plus a dedicated electrohydraulic umbilical and one service line. The subsea tree thus required limited functionality, because production control is performed through a topside choke and flowmetering is achieved during periodic well tests through a topside test separator.
