公开(公告)号：WO2021259696A1

公开(公告)日：2021-12-30

申请号：PCT/EP2021/066039

申请日：2021-06-15

Applicant: CEFRONT TECHNOLOGY AS

Inventor： AARSNES, Jan, Vidar ,  SYVERTSEN, Kåre ,  THUNES, Ragnar ,  SYVERTSEN, Henrik

IPC: B63B21/50 ,  B63B21/508

Abstract: It is disclosed a disconnectable buoy, a spread mooring system, a floating installation, a computer program, and methods for connecting the floating installation to a seabed and for disconnecting the floating installation for production and/or storage of hydrocarbons using the spread mooring system. The spread mooring system comprises a disconnectable buoy, a first seabed mooring line assembly connected to the disconnectable buoy and the seabed, a second seabed mooring line assembly connected to the disconnectable buoy and the seabed and a third seabed mooring line assembly connectable to the floating installation and the seabed.

公开(公告)号：WO2022207661A1

公开(公告)日：2022-10-06

申请号：PCT/EP2022/058314

申请日：2022-03-29

Applicant: HORISONT ENERGI AS

Inventor： BRATTEBØ, Ståle ,  HAUKELIDSÆTER EIDESEN, Bjørgulf

IPC: E21B17/01 ,  E21B17/08 ,  E21B36/00 ,  E21B41/00 ,  E21B43/01 ,  E21B43/013 ,  B63B22/02 ,  E21B37/00 ,  B63B21/50 ,  B63B21/508 ,  B63B22/026 ,  E21B17/015 ,  E21B17/085 ,  E21B36/005 ,  E21B41/0064 ,  E21B43/0107 ,  E21B43/0135

Abstract: A fluid injection system contains a buoy (170) for connecting with a vessel to receive fluid therefrom. At least one fluid-transporting riser (171) connects the buoy (170) with a subsea template arranged on the seabed at a wellhead for a drill hole to a subterranean void. Each riser (171) is detachably connected to a bottom surface of the buoy (170) by means of a connector arrangement (210) containing: a buoy guide member (510) configured to automatically steer a connector member (570) in a head end (300) of a riser to be connected (171) to the buoy (170), which head end (300) is moved towards the buoy guide member (510); a mating member (550) configured to attach a first sealing surface of the connector member (570) to a second sealing surface of the buoy guide member (510) when said head end (300) has been moved such that the connector member (570) contacts the buoy guide member (510), and a locking member (560) configured to lock the first and second sealing surfaces to one another when said surfaces are aligned with one another.

公开(公告)号：WO2022207668A1

公开(公告)日：2022-10-06

申请号：PCT/EP2022/058328

申请日：2022-03-29

Applicant: HORISONT ENERGI AS

Inventor： BRATTEBØ, Ståle ,  HAUKELIDSÆTER EIDESEN, Bjørgulf

IPC: E21B17/01 ,  E21B17/08 ,  E21B36/00 ,  E21B41/00 ,  E21B43/01 ,  E21B43/013 ,  B63B22/02 ,  E21B37/00 ,  B63B21/50 ,  B63B21/508 ,  B63B22/026 ,  E21B17/015 ,  E21B17/085 ,  E21B36/005 ,  E21B41/0064 ,  E21B43/0107 ,  E21B43/0135

Abstract: A riser (171) to be arranged for injecting fluid from a vessel on a water surface (111) into a subterranean void (150) beneath a seabed (130) is attached to a buoy (170) as follows. An ROV (350) is controlled to attach a winch wire (320) to a head end (300) of the riser (171). Then, the ROV (350) is controlled to lead the winch wire (320) via the buoy (170) to a winch unit (330) on a seabed (130) below the buoy (170). Thereafter, the winch unit (330) is controlled to pull up the head end (300) of the riser (171) to a bottom side of the buoy (170). Finally, the ROV (350) is controlled to connect the head end (300) of the riser (171) to a connector arrangement (210) in the bottom of the buoy (170).

公开(公告)号：WO2022207666A1

公开(公告)日：2022-10-06

申请号：PCT/EP2022/058326

申请日：2022-03-29

Applicant: HORISONT ENERGI AS

Inventor： BRATTEBØ, Ståle ,  HAUKELIDSÆTER EIDESEN, Bjørgulf

IPC: E21B17/01 ,  E21B17/08 ,  E21B36/00 ,  E21B41/00 ,  E21B43/01 ,  E21B43/013 ,  B63B22/02 ,  E21B37/00 ,  B63B21/50 ,  B63B21/508 ,  B63B22/026 ,  E21B17/015 ,  E21B17/085 ,  E21B36/005 ,  E21B41/0064 ,  E21B43/0107 ,  E21B43/0135

Abstract: Obstructing fluid plugs are removed from a base section (410) of a riser (171), which base section (410) extends between a receiving end (411) connected to an upright section (420) of the riser (171) and an emitting end (412) of the riser (171) connected to a subsea template (120) located on a seabed (130) over a drill hole (140) to a subterranean void (150) into which fluid received via the riser (171) is to be injected from the subsea template (120). The obstructing fluid plugs are removed either by injecting heated assisting from a storage container into an injection point in the base section (410) and injecting heated assisting liquid from the vessel (110) in the upright section (420) of the riser (171), or a heating unit (480) is controlled to heat the base section (410) to a predetermined temperature, and thereafter maintain a temperature level here above or equal to the predetermined temperature.