System for power supply to subsea installations

Details System for power supply to subsea installations System for power supply to subsea installations

2011-08-09

2011-08-09

Beach, Thomas A (Department: 3674)

Wells

With heating, refrigerating or heat insulating means

Heater surrounding production tube

C166S338000, C166S272100, C166S302000

Reexamination Certificate

active

07992632

ABSTRACT:
A system for power supply to subsea installations and plants for production of hydrocarbons, comprising a preferably heat insulated pipeline (10), in which the possibility for internal formation of detrimental hydrates or wax deposits are present, and comprising electrical power supply cables (12, 31) for direct electrical heating of the pipeline (10), and having an electrical connection (36) to the surrounding sea at an end of the supply cable. The power supply cable (12) is further configured, in a second circuit configuration, to provide a three-phase power supply to an electrically powered motor in an subsea installation unit (11) connected to the pipeline (10), and that means (18, 19) are arranged for switching so that the three conductors (28) forming the power supply cables (12) form parallel conductors in a second circuit configuration, wherein the power supply cables (12, 31) supply power for direct heating of the pipeline (10).

REFERENCES:
patent: 3782465 (1974-01-01), Bell et al.
patent: 4319632 (1982-03-01), Marr, Jr.
patent: 4366356 (1982-12-01), Ando
patent: 4589492 (1986-05-01), Greiner et al.
patent: 4945334 (1990-07-01), Biersach
patent: 6006837 (1999-12-01), Breit
patent: 6142707 (2000-11-01), Bass et al.
patent: 6260615 (2001-07-01), Dalrymple et al.
patent: 6318467 (2001-11-01), Liu et al.
patent: 6328583 (2001-12-01), Ness et al.
patent: 6371693 (2002-04-01), Kopp et al.
patent: 6509557 (2003-01-01), Bass
patent: 6617556 (2003-09-01), Wedel
patent: 6707012 (2004-03-01), Stone, Jr.
patent: 6714018 (2004-03-01), Bass
patent: 7311151 (2007-12-01), Chitwood et al.
patent: 2003/0015519 (2003-01-01), Stone, Jr.
patent: 2007/0098375 (2007-05-01), Kinnari et al.
patent: 2 331 535 (1999-05-01), None
patent: 2 437 161 (2007-10-01), None
patent: 2 457 791 (2009-09-01), None
patent: WO 03/090499 (2003-10-01), None
patent: WO-2004/111519 (2004-12-01), None
patent: WO 2004111519 (2004-12-01), None
patent: WO 2010/135772 (2010-12-01), None
Urdahl et al., “Operational Experience by Applying Direct Electrical Heating for Hydrate Prevention,” OTC 15189, Offshore Technology Conference, May 2003, pp. 1-7.
European Patent Office Supplementary European Search Report dated Jan. 20, 2011; 1 page.

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