Wells – Processes – Freeing stuck object – grappling or fishing in well
Reexamination Certificate
2008-05-06
2008-05-06
Thompson, Kenneth (Department: 3672)
Wells
Processes
Freeing stuck object, grappling or fishing in well
C166S178000, C166S065100
Reexamination Certificate
active
11326229
ABSTRACT:
A downhole impact generator (60) is adapted to be moved to a target location within a wellbore (68) for transmitting a jarring force to a well tool (72) positioned in the wellbore (68). The downhole impact generator (60) includes a downhole power unit (62) having a moveable shaft (66) and a jarring tool (64). The jarring tool (64) is operably engageable with the well tool (72) and is operably coupled with the moveable shaft (66) of the downhole power unit (62) such that when the jarring tool (64) is operably engaged with the well tool (72), linear movement of the moveable shaft (66) energizes the jarring tool (64) such that a jarring force can be transmitted by the jarring tool (64) to the well tool (72).
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Downhole Wirefinder with Power Unit, ip.com Prior Art Database.
Clemens Jack G.
Foster Jerry C.
Thurman Robert L.
Halliburton Energy Service,s Inc.
Thompson Kenneth
Youst Lawrence R.
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