# US 2013/0153242 A1 · In-riser power generation > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0153242 A1 - Document ID: US20130153242A1 - Status: Published application - Kind: A1 - Application number: 13/647,259 - Filed: 2012-10-08 - Published: 2013-06-20 - Earliest claimed: 2011-12-16 - Inventors: Kirk W. Flight; Matthew Niemeyer; Ronald James Spencer; John Yarnold; Jeffrey Marabella; Gary Rytlewski - Web page: https://patentgrep.com/patent/US20130153242A1 ## CPC - E21B 41/0085: {Adaptations of electric power generating means for use in boreholes} - E21B 4/02: Fluid rotary type drives - E21B 17/01: Risers - E21B 33/0355: {Control systems, e.g. hydraulic, pneumatic, electric, acoustic, for submerged well heads} - E21B 33/063: {for shearing drill pipes (cutting of wireline E21B29/04)} - E21B 33/064: specially adapted for underwater well heads - F03B 3/04: with substantially axial flow throughout rotors, e.g. propeller turbines {(rotors per se F03B3/126)} - F03B 3/126: {Rotors for essentially axial flow, e.g. for propeller turbines (with adjustable blades F03B3/14)} - F03B 3/18: Stator blades; Guide conduits or vanes, e.g. adjustable {(conduits in dams or the like F03B13/08; arrangement of valves F03B11/004)} - E21B 34/04: in underwater well heads - E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS - F03B: MACHINES OR ENGINES FOR LIQUIDS (positive-displacement engines for liquid F03C; machines for liquids and gases F01; positive-displacement machines for liquids F04, rotary fluid gearing of the hydrokinetic type F16H41/00) ## 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. ## Claims ### Claim 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. ### Claim 2 (depends on 1) The system of claim 1, wherein the subsea fluid flow path is the bore. ### Claim 3 (depends on 1) The system of claim 1, wherein the subsea fluid flow path is the annulus. ### Claim 4 (depends on 1) The system of claim 1, wherein the subsea fluid flow path is a transverse pathway formed through the landing string between the bore and the annulus. ### Claim 5 (depends on 1) The system of claim 1, wherein the subsea fluid flow path is a hydraulic conduit connecting a subsea hydraulic power device and a subsea hydraulically actuated device. ### Claim 6 (depends on 1) The system of claim 1, wherein the subsea fluid flow path comprises: a sealed annular region in the blowout preventer stack; a blowout preventer kill line in fluid communication with the sealed annular region; and a blowout preventer choke line in fluid communication with the sealed annular region. ### Claim 7 (depends on 1) The system of claim 1, further comprising: a packer providing a seal between the landing string and the riser; and a pathway formed through the packer providing fluid communication in the annulus across the packer, wherein the turbine power generator is located in the pathway. ### Claim 8 (depends on 1) The system of claim 1, wherein the subsea fluid flow path comprises: a sealed annular region formed in the blowout preventer stack between a first closed ram and a second closed ram; a conduit providing fluid communication between the sealed annular region and the annulus; and a blowout preventer access line in fluid communication with the sealed annular region. ### Claim 9 A method of generating power in a subsea well system, comprising: 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. ### Claim 10 (depends on 9) The method of claim 9, wherein the directing the fluid flow comprises: sealing an annular region in the blowout preventer stack; and circulating the fluid flow from the vessel into the sealed annular region, wherein the subsea fluid flow path comprises a conduit extending from an inlet located in the annular region to the annulus. ### Claim 11 (depends on 9) The method of claim 9, wherein the directing the fluid flow comprises: sealing an annular region of the blowout preventer stack; and circulating the fluid flow from a first blowout preventer access line into the sealed annular region and from the sealed annular region into a second blowout preventer access line. ### Claim 12 (depends on 9) The method of claim 9, wherein the turbine power generator is located in one of the first blowout access line and the second blowout preventer access line. ### Claim 13 (depends on 9) The method of claim 9, wherein the subsea fluid flow path is the bore of the landing string. ### Claim 14 (depends on 9) The method of claim 9, wherein the subsea fluid flow path is the annulus. ### Claim 15 (depends on 9) The method of claim 9, wherein the subsea fluid flow path is a transverse pathway formed through the landing string. ### Claim 16 (depends on 9) The method of claim 9, wherein: the subsea fluid flow path comprises a transverse path formed through the landing string; and the directing the fluid flow comprises circulating fluid from one of the bore and the annulus through the transverse pathway to the other of the bore and the annulus. ### Claim 17 An in-riser power generation device, the device comprising: 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. ### Claim 18 (depends on 17) The device of claim 17, wherein the pathway is a transverse pathway extending from the bore to an exterior of the sub member. ### Claim 19 (depends on 18) The device of claim 18, further comprising a valve member moveably positioned to open and close the pathway. ### Claim 20 (depends on 17) The device of claim 17, wherein the sub member is a packer element adapted to seal between the landing string and a riser in which the landing string is disposed.