Electric control and supply system
First Claim
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1. A system for supplying voltage from a surface of the sea to a remote location subsea, the system comprising:
- a voltage supply and control assembly at the surface converting AC voltage to a first DC voltage;
a control and actuating assembly at the subsea remote location receiving said first DC voltage and converting said first DC voltage to a second DC voltage;
an umbilical extending from said voltage supply and control assembly to said control and actuating assembly to conduct said first DC voltage from said voltage supply and control assembly to said control and actuating assembly; and
a subsea tree comprising at least one electrical device comprising an electric motor, wherein the subsea tree is coupled to the control and actuating assembly and uses the second DC voltage to power the electrical motor at the subsea remote location.
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Abstract
In at least some embodiments, an electrically controlled subsea production system includes a subsea electrical distributor that receives a high direct current (DC) voltage. The electrical distributor converts the high DC voltage to a lower DC voltage. The electrically controlled subsea production system also includes a plurality of subsea trees coupled to the subsea electrical distributor, wherein valves of the subsea trees selectively operate based on the lower DC voltage.
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Citations
33 Claims
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1. A system for supplying voltage from a surface of the sea to a remote location subsea, the system comprising:
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a voltage supply and control assembly at the surface converting AC voltage to a first DC voltage; a control and actuating assembly at the subsea remote location receiving said first DC voltage and converting said first DC voltage to a second DC voltage; an umbilical extending from said voltage supply and control assembly to said control and actuating assembly to conduct said first DC voltage from said voltage supply and control assembly to said control and actuating assembly; and a subsea tree comprising at least one electrical device comprising an electric motor, wherein the subsea tree is coupled to the control and actuating assembly and uses the second DC voltage to power the electrical motor at the subsea remote location. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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Specification