Subsea tree including a fluid swivel
AssigneePivotree Pty Ltd
InventorChristopher Merrick
Life of this patent
Estimating the term…
Abstract
A subsea tree including a fluid swivel, the fluid swivel comprising: (a) a fixed inner body defining an inlet for fluid communication with a production conduit fora subsea well; (b) a rotatable outer body defining an outlet and an attachment point for fluid communication with a riser; (c) a first interface between the fixed inner body and the rotatable outer body defining a fluid chamber in fluid communication with the inlet and the outlet; and (d) a first seal between the fixed inner body and the rotatable outer body; wherein, when the fluid swivel is attached to the riser, the riser is capable of rotational movement around the subsea tree.
Claims23
A subsea tree including:
- (a) a fluid swivel comprising:
- (i) a fixed inner body defining an inlet for fluid communication with a production conduit for a subsea well;
- (ii) a rotatable outer body defining an outlet for fluid communication with a riser and an attachment point for the riser;
- (iii) a first interface between the fixed inner body and the rotatable outer body defining a fluid chamber in fluid communication with the inlet and the outlet;
- and
- (iv) a first seal between the fixed inner body and the rotatable outer body;
- wherein, when the fluid swivel is attached to the riser, the riser is capable of rotational movement around the subsea tree;
- (b) a hydraulic reservoir, a chemical reservoir, or both;
- and
- (c) a mooring assembly attached to the subsea well, wherein the mooring assembly is capable of rotational movement around the subsea well and independently of the fluid swivel.
Dependencies are inferred from the claim text.