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US 12,692,769 B2Granted
Support systems for subsea wellbores
AssigneeOnesubsea, LLC
InventorsBrynjulf Spalder, Rolf Barfod Schüller
Life of this patent
Estimating the term…
Abstract
An embodiment of a subsea support system comprises a foundation including a frame and an elongate connection pile. In addition, the subsea support system comprises a template that is configured to be lowered to the sea floor separately from the foundation. The template includes one or more slots, each of the one or more slots being configured to position a subsea wellbore on the sea floor. In addition, the template includes a connection sleeve that is arranged so that when the template is landed on the foundation on the sea floor, the connection pile is received in the connection sleeve.
Claims19
A subsea support system comprising:
- a foundation comprising:
- a frame;
- and
- an elongate connection pile;
- and
- a template that is configured to be lowered to a sea floor separately from the foundation, wherein the template comprises:
- one or more slots, each of the one or more slots being configured to position a subsea wellbore on the sea floor;
- and
- a connection sleeve that is arranged so that when the template is landed on the foundation on the sea floor, the connection pile is received in the connection sleeve, wherein the connection sleeve comprises:
- a cylindrical portion;
- an upper frustoconical portion extending axially from the cylindrical portion toward an upper end of the connection sleeve, wherein the upper frustoconical portion diverges radially outward from a central axis of the connection sleeve along an axial direction from the cylindrical portion toward the upper end;
- and
- an upper cylindrical portion extending axially from the upper frustoconical portion to the upper end of the connection sleeve;
- wherein the upper frustoconical portion and the upper cylindrical portion are configured to interface with a tool for lifting the template relative to the foundation.
11 more elements
A method of installing a subsea support system, the method comprising:
- (a) lowering a foundation to a sea floor, wherein the foundation includes a frame;
- (b) securing the foundation on the sea floor so that the foundation is configured to resist loads in a vertical direction and a lateral direction;
- (c) lowering a template to the sea floor after (a), wherein the template includes one or more slots and one or more connection sleeves, each of the one or more slots being configured to position a subsea wellbore on the sea floor, each of the one or more connection sleeves comprising:
- a cylindrical portion;
- an upper frustoconical portion extending axially from the cylindrical portion toward an upper end of the connection sleeve, wherein the upper frustoconical portion diverges radially outward from a central axis of the connection sleeve along an axial direction from the cylindrical portion toward the upper end;
- and
- an upper cylindrical portion extending axially from the upper frustoconical portion to the upper end of the connection sleeve, wherein the upper frustoconical portion and the upper cylindrical portion are configured to interface with a tool for lowering the template;
- (d) landing the template on the frame of the foundation;
- and
- (e) forming a mechanical lock between the template and the foundation after (d) to rigidly secure the template to the foundation.
7 more elements
A subsea support system comprising:
- a foundation comprising:
- a frame;
- and
- a plurality of vertically extending connection piles;
- a template landed on the frame of the foundation, wherein the template comprises:
- a plurality of slots that are each configured to position a subsea wellbore on a sea floor;
- and
- a plurality of connection sleeves, wherein the plurality of vertically extending connection piles are inserted into the plurality of connection sleeves to align the template on the foundation, each of the plurality of connection sleeves comprising:
- a cylindrical portion;
- an upper frustoconical portion extending axially from the cylindrical portion toward an upper end of the connection sleeve, wherein the upper frustoconical portion diverges radially outward from a central axis of the connection sleeve along an axial direction from the cylindrical portion toward the upper end;
- and
- an upper cylindrical portion extending axially from the upper frustoconical portion to the upper end of the connection sleeve, wherein the upper frustoconical portion and the upper cylindrical portion are configured to interface with a tool for lifting the template relative to the foundation;
- and
- a plurality of mechanical locks formed between the plurality of connection piles and the plurality of connection sleeves to rigidly secure the template to the foundation.
11 more elements
Dependencies are inferred from the claim text.