The Powering Of Subsea Facilities For Remote
Offshore Oil And Gas Fields
Author(s)
O. Frolov, Y. Shershnev, M. Gurevich, K. Megretskiy,
V. Movshuk & D. Batrak
Abstract
The development of offshore fields is supported by drilling and production
equipment which requires high performance and a reliable power supply.
Russian offshore fields that can be developed using subsea technologies are
located at up to 650 km from onshore infrastructures under extreme ice
conditions. Requirements for the equipment capacities of power supplies may
vary from dozens of kilowatts to hundreds of megawatts. It has been recognized
that these days one of the most reliable and safe techniques for powering subsea
oil and gas facilities is power transmission from an onshore power supply source
through a subsea cable. Different systems of high voltage power supply have
been considered: direct high voltage current transmission, alternating current and
low frequency alternating current transmission. They have been compared in
terms of loss minimization during power transmission and conversion, and the
provision of reliability and safety of unattended operating. It has been concluded
that high voltage direct current transmission at long distances ensures the
sufficient reduction of cable losses as compared to alternating current
transmission, but subsea DC-AC conversion (as subsea equipment usually uses
alternating current) requires the development of a subsea converter.
Keywords: electric power supply system, subsea production facilities, losses,
converter station.
Keywords
electric power supply system, subsea production facilities, losses,
converter station.
Related Book
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