This paper presents the experience and lessons gained from the design and three years of operation of the control and monitoring system implemented in Peregrino field to monitor and protect the electrical submersible pumps (ESP).

The ESP control and monitoring system was designed to enable robust ESP protection and avoid preventable shutdowns. The system functionalities are spread among variable speed drives (VSD), platform control system (PCS) and platform emergency safety system (ESS) with clear boundaries of equipment responsibilities documented in the cause and effect matrix. The document also presents the principles used during the design phase and the results of three years’ of operation.

Peregrino field is a Statoil asset in Campos Basin approximately 85 km offshore Cabo Frio/Rio de Janeiro state in Brazil. The oil in the Peregrino has a viscosity between 129 and 365 cP at reservoir conditions and API gravity that varies between 13 and 15° API. The first phase of field development comprises two drilling-capable wellhead platforms and a central moored FPSO. Currently, there are 27 producer wells, including 3 multilaterals and 6 injectors in operation. The field produces close to 100,000 STB/d of oil and achieved the production record of 104,292 STB/d in July 2013, which is considered the achievement of the field production plateau of 100,000 STB/d.

The learning and experience developed following the design phase and through three years’ of operation represent a very important set of best practices. The best practices can be used as a field-proven method of ESP control and monitoring system project implementation for when operating with viscous oil ESP in an offshore environment.

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