IN-RISER POWER GENERATION
First Claim
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1. A subsea well system, comprising:
- a subsea fluid flow path;
a riser extending from a vessel located at a water surface to a blowout preventer stack located at a seafloor;
a subsea tree landed in the blowout preventer on a landing string comprising a bore;
the landing string extending in the riser from the vessel forming an annulus between the landing string and the riser; and
a turbine power generator in fluid communication with the subsea fluid flow path.
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Abstract
In-riser power generation devices and methods are utilized to generate power subsea to operate subsea devices of a subsea well system. A turbine power generator is located in fluid communication with a subsea fluid flow path of a subsea well system and the turbine power generator is operationally connected to a subsea power device.
32 Citations
20 Claims
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1. A subsea well system, comprising:
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a subsea fluid flow path; a riser extending from a vessel located at a water surface to a blowout preventer stack located at a seafloor; a subsea tree landed in the blowout preventer on a landing string comprising a bore; the landing string extending in the riser from the vessel forming an annulus between the landing string and the riser; and a turbine power generator in fluid communication with the subsea fluid flow path. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of generating power in a subsea well system, comprising:
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directing fluid flow across a turbine power generator located in fluid communication with a subsea fluid flow path of a subsea well system, the subsea well system including a riser extending from a vessel located at a water surface to a blowout preventer stack located at a seafloor, a subsea tree landed in a passage of the blowout preventer stack on a landing string comprising a bore, the landing string extending in the riser from the vessel forming an annulus between the landing string and the riser; and generating power in response to the fluid flow across the turbine power generator. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. An in-riser power generation device, the device comprising:
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a sub member for connecting in a landing string to form a bore between a vessel located at a surface of a water and a blowout preventer stack located at a seafloor; a pathway formed through the sub member to communicate fluid flow when the sub member is connected in the landing string; and a turbine power generator positioned in the pathway. - View Dependent Claims (18, 19, 20)
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Specification