Condition monitoring and identification of failure modes of subsea electrical equipments

Abstract

Offshore oil and gas field development is shifting to the usage of subsea systems where the field is located either in deepwater area or close to existing fields and can be connected to existing productions systems. Subsea field development is trending towards subsea processing systems: the oil and gas processing equipments normally installed in the surface facility will be placed on the seabed closer to the well. This strategy is expected to increase the reservoir recovery rate, especially in marginal fields, and also to reduce total capital expenditure by eliminating the topside processing cost at the same time. Meanwhile, the processing equipment normally requires a high electrical power supply, for which the dedicated subsea electrical power and distribution units are required.