Wells – Packers or plugs – Spaced sealing portions
Reexamination Certificate
2005-06-21
2010-10-26
Bagnell, David J (Department: 3672)
Wells
Packers or plugs
Spaced sealing portions
C166S135000, C166S116000, C277S342000, C277S589000
Reexamination Certificate
active
07819184
ABSTRACT:
A logging plug is disclosed having an internal sealing mechanism therein which provides a high degree of sealing integrity between the bore of the plug and a coiled tubing or other means of suspending wellbore equipment running therethrough. The sealing mechanism utilizes a combination of low friction, elastomerically-energized cap seals and ring seals to ensure that the sealing surfaces adapt continuously to the changing profile of the coiled tubing to provide a true dynamic seal around the coiled tubing.
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Ferguson Andrew S.
McCorry Marc
Sachdeva Sandeep
Andrish Sean D
Bagnell David J
Galloway Bryan P.
McGoff Kevin B.
Schlumberger Technology Corporation
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