Wells – Submerged well – Connection or disconnection of submerged members remotely...
Patent
1997-01-24
1999-11-23
Tsay, Frank
Wells
Submerged well
Connection or disconnection of submerged members remotely...
405169, E21B 4301, F16L 104
Patent
active
059882816
ABSTRACT:
The present invention provides for the connection of a pressure balanced stab and a manifold in which offsetting forces maintained on the stab allow it to remain in an inserted state within the manifold without the use of a significant amount of force to maintain the connection. The offsetting forces are contained within the stab through the use of C-ring seals on the stab, which are activated by a downward force created by an actuator. The compression of the C-rings is delayed until insertion is complete, therefore allowing an installation which does not damage the seals. The O-ring designs, used in prior pressure balanced stabs, are likely to be damaged upon insertion of the stab into the receptacle. The damage to the O-ring seals takes place when the O-ring, partially protruding from the stab, makes contact with the surface of the receptacle in such a manner that causes the O-ring seal to tear or become manipulated in a way that creates an ineffective seal. The preferred embodiment allows for activation of the C-ring seal to take place following insertion of the stab within the receptacle and therefore the C-ring does not encounter interference from the surface of the receptacle until it is activated. In addition to the prevention of damage to the C-ring seal, the preferred embodiment allows for the seal to withstand greater pressure than prior O-ring designs.
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Buck Jon D.
Douglas Larry D.
Oceaneering International Inc.
Tsay Frank
LandOfFree
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