Wells – Submerged well – Connection or disconnection of submerged members remotely...
Patent
1983-11-22
1985-10-22
Leppink, James A.
Wells
Submerged well
Connection or disconnection of submerged members remotely...
166123, 166182, 166387, 285 18, 285DIG13, E21B 2306, E21B 33043
Patent
active
045482730
ABSTRACT:
A torque multiplier subsea tool for setting a seal between a casing hanger and a subsea wellhead includes a mandrel having a sun gear with axial elongate teeth. An outer barrel is disposed around the mandrel forming an annulus therebetween. A planetary gear assembly is disposed in the annulus between the barrel and the sun gear to transmit to the barrel a torque which is higher in magnitude than that applied to the mandrel. A connector body disposed around the mandrel, below the planetary gear assembly, includes radially movable dogs for engaging the casing hanger. The barrel engages the sealing assembly and transmits the increased torque thereto to advance the sealing assembly downwards and to set the seal. The mandrel advances downwards with the sealing assembly and releases the dogs from the casing hanger. An emergency release mechanism is provided to advance the mandrel downwards to release the dogs in the event such downward movement is prevented during normal seal setting operation.
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Baugh Benton F.
Leicht Frederick M.
Palany Harish C.
Conley Ned L.
Dang Hoang C.
Leppink James A.
Rose David A.
Shull William E.
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