Wet christmas tree

Details Wet christmas tree Wet christmas tree

E - Fixed Constructions

21

B

E21B 43/017 (2006.01) E21B 33/035 (2006.01) E21B 34/04 (2006.01)

Patent

CA 2075255

This invention refers to a wet Christmas tree (20) utilized particularly in subsea production systems, including at the bottom a connector (22) for purposes of locking to the wellhead, a guide structure (24) consisting of a central ring attached to said connector (22), supporting arms (26) and guide funnels (28), a valve block (30), a reentry mandrel (32), gate- type lateral valves (46, 48, 50, 52) with metal/metal sealing and hydraulic driving with spring-type return flow lines with loops (54, 56, 58) and piping for the crossover line, hydraulically adjustable chokes (60, 62), a flow line terminal (36), a reentry pole (42) and a control system.

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