Wells – Processes – Placing or shifting well part
Reexamination Certificate
2007-01-23
2007-01-23
Thompson, Kenneth (Department: 3672)
Wells
Processes
Placing or shifting well part
C166S118000, C166S138000, C277S339000
Reexamination Certificate
active
11158184
ABSTRACT:
A packer, and operation of the same, which forms elastomeric seals and non-elastomeric seals. The packer may be constructed from a non-elastomeric tubular core having a frustoconical shaped inner diameter. The outer diameter of the core may be substantially smooth and carry one or more elastomeric sealing elements. The packer is set by causing the diametrical expansion of the tubular core. The construction of the tubular core is preferably such that its diametrical expansion causes the formation of radial raised portions (upsets) on the outer surface. These raised portions form the non-elastomeric seals and also prevent extrusion of the elastomeric sealing elements.
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GB Search Report, Application No.: 0410879.1, Dated Aug. 15, 2006.
Gudmestad Tarald
Hirth David Eugene
Patterson & Sheridan LLP
Thompson Kenneth
Weatherford / Lamb, Inc.
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