Subsea tool launching equipment

Details Subsea tool launching equipment Subsea tool launching equipment

1986-04-04

1987-11-17

Novosad, Stephen J.

Wells

Submerged well

Connection or disconnection of submerged members remotely...

166 70, 166351, E21B 2308, E21B 33076

Patent

active

047067560

ABSTRACT:
A subsea pumpdown tool launcher is provided which permits pumpdown operations without requiring riser access from the surface. The launcher includes an entry valve connected to an upper connection of a fluid circulation line which is, in turn, connectable to a pump. An unrestricted riser section is connected to the lower connection of the circulation line. The bottom of this riser section attaches to the top of a second valve for the exit or entry of a pumpdown tool to or from a subsea wellhead. The bottom of the second valve is connected to the top of a lower connection of the fluid circulation line. The bottom of the lower connection is connected to the top of a subsea wellhead assembly.

REFERENCES:
patent: 3536344 (1969-09-01), Nelson
patent: 4111261 (1978-09-01), Oliver
patent: 4230186 (1980-10-01), Lewis, Jr.
patent: 4260022 (1981-04-01), Van Bilderbeek
patent: 4489780 (1984-12-01), Duhon
patent: 4513823 (1985-04-01), Hynes et al.
patent: 4616706 (1986-10-01), Huffaker et al.

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