Downhole impact generator and method for use of same

摘要

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 ).