Wells – Packers or plugs – Spaced sealing portions
Reexamination Certificate
2006-02-28
2006-02-28
Bagnell, David (Department: 3672)
Wells
Packers or plugs
Spaced sealing portions
C166S188000, C166S202000, C166S387000
Reexamination Certificate
active
07004248
ABSTRACT:
The present invention involves a pack-off system for use in packing off an area of interest within a wellbore. The pack-off system comprises at least two packing elements disposed on a tubular body. The packing elements of the present invention comprise overlapping leaves which are pivotally mounted on the tubular body. The present invention further involves a method for using the pack-off system, wherein the packing elements are placed adjacent to an area of interest within a wellbore. The overlapping leaves of the packing elements are extended radially to effectively obstruct fluid flow in the annular space between the outermost portions of the packing elements and the wellbore. The bulk of the fluid introduced into the wellbore is trapped between the packing elements and is thereby forced into the area of interest.
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Hoffman Corey
Wilson Paul
Collins Giovanna M.
Patterson & Sheridan LLP
Weatherford / Lamb, Inc.
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