Wells – Processes – Assembling well part
Reexamination Certificate
2007-10-26
2009-12-08
Bagnell, David J (Department: 3672)
Wells
Processes
Assembling well part
C166S077510, C166S085100
Reexamination Certificate
active
07628212
ABSTRACT:
A drill stem connection system and method is shown that provides a secure hold on drill stem surfaces while unscrewing a threaded connection. Two lever arm components are adjustable to a number of possible orientations to allow for fitting the drill stem wrench in tight spaces. Concentric rotation of lever arm components facilitates connection of the lever arm components together. Configurations and methods shown provide a stable and powerful tool to loosen threaded drill stem effectively.
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“International Application Serial No. PCT/US2007/022755, International Search Report mailed Feb. 13, 2008”, 6 pgs.
“International Application Serial No. PCT/U52007/022755, Written Opinion mailed Feb. 13, 2008”, 5 pgs.
Bagnell David J
Hutchins Cathleen R
Schwegman Lundberg & Woessner, P.A.
TT Technologies, Inc.
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