Production flow tree cap
AssigneeKvaerner Oilfield Products
InventorsMichael R. Garrett, Scott K. Beall, Rogelio Ortiz
Life of this patent
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Abstract
A christmas tree to control the production from a subsea oil or gas well is disclosed. The christmas tree design including a tree body having a first flow port and a tree cap; a tubing hanger landed within the tree body; an actuation mandrel landed within the tree body, the actuation mandrel having a flow port; and a flow diverter disposed within the tree cap to divert flow through the flow port. The christmas tree arrangement allows for dual barriers within the tree cap without placing or retrieving any plugs from within the tubing hanger, thereby reducing the number of downhole trips required to complete and/or service the subsea well.
Claims31
A christmas tree to control the production from a subsea oil or gas well comprising:
- a) a tree body having a first production flow port;
- b) a tubing hanger landed within the tree body;
- c) an actuation mandrel landed within the tree body, the actuation mandrel having a second production flow port in fluid communication with said first flow port;
- and
- d) a flow diverter disposed within the actuation mandrel to divert flow through the production flow ports.
A method of controlling production from a subsea oil or gas well comprising steps of:
- a) installing a side valve tree onto a wellhead;
- b) running a tubing hanger into the wellbore;
- c) landing the tubing hanger in the tree body;
- d) installing an actuation mandrel with a plurality of plugs set therein;
- wherein there are no plugs set in the tubing hanger.
A method of servicing a subsea oil or gas well with a side-valve christmas tree comprising steps of:
- a) running an actuation mandrel retrieval tool into the christmas tree;
- b) engaging the actuation mandrel retrieval tool with the actuation mandrel;
- c) retrieving the actuation mandrel;
- and
- d) retrieving a tubing hanger;
- wherein there is no step of retrieving any plugs from within the tubing hanger.
Dependencies are inferred from the claim text.