Non-releasing anchor tool when jarring up on a stuck subterranean tool component
Abstract:
A grip a no goes in a subterranean tool to properly position grip members held radially outward with a cone on delivery of an uphole force. In the case of a subsurface safety valve that has a flow tube the slips are wedged into the flow tube when the grip tool lands on the no go in the subsurface safety valve and is jarred up. Jarring up using spang jars and weight bars can be repeatedly accomplished without releasing the grip tool from the flow tube. Jarring down unsupports the slips to allow them to retract while one or more springs can be used to prevent a re-grip of the flow tube. The grip tool can now be pulled out of the hole with the flow tube broken loose from accumulated debris for subsequent normal operation of the flow tube with the control system for the subsurface safety valve.
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