US 12,140,001 B2
Buoy for injecting fluid in a subterranean void and methods for connecting and disconnecting a fluid passage from a vessel to the buoy
Bjørgulf Haukelidsæter Eidesen, Stavanger (NO); and Ståle Brattebø, Tananger (NO)
Assigned to HORISONT ENERGI AS, (NO)
Appl. No. 18/280,315
Filed by HORISONT ENERGI AS, Sandnes (NO)
PCT Filed Mar. 2, 2022, PCT No. PCT/EP2022/055218
§ 371(c)(1), (2) Date Sep. 5, 2023,
PCT Pub. No. WO2022/184752, PCT Pub. Date Sep. 9, 2022.
Claims priority of application No. 21160935 (EP), filed on Mar. 5, 2021.
Prior Publication US 2024/0068332 A1, Feb. 29, 2024
Int. Cl. E21B 43/01 (2006.01); B63B 22/02 (2006.01); E21B 17/01 (2006.01); E21B 19/00 (2006.01); E21B 41/00 (2006.01); E21B 43/017 (2006.01); E21B 47/06 (2012.01)
CPC E21B 43/0107 (2013.01) [B63B 22/021 (2013.01); E21B 17/012 (2013.01); E21B 19/002 (2013.01); E21B 41/0007 (2013.01); E21B 43/017 (2013.01); E21B 47/06 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A buoy configured to accomplish a fluid connection, via at least one riser, from a vessel on a water surface to a subsea template located on a seabed, so as to enable transport of fluid from the vessel to the subsea template for injection of the fluid into a subterranean void via a drill hole from the subsea template to the subterranean void, the buoy comprising:
at least one valve configured to allow or shut off a passage of fluid from the vessel to the at least one riser,
wherein the buoy comprises a primary communication interface configured to:
be connected to an external site positioned at a location being geographically separated from an offshore injection site containing the subsea template and from the vessel, and
receive commands from the external site,
wherein in response to the received commands, the buoy is configured to, by electrical operation, control the at least one valve to either allow or shut off the passage of fluid from the vessel to the at least one riser.