Patent ID: 11867013
Assignee: nan
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 7:
8. A system for removing a casing from a wellbore, comprising:
a string of tools comprising:
a jack configured to exert an upward force on tools that are downhole from the jack;
a spear configured to attach to a casing;
a mud motor downhole of the spear, the mud motor operating in response to a minimum fluid flow of a fluid flow;
a flow diversion valve located between the jack and the mud motor, the flow diversion valve comprising:
a housing having an opening between an interior of the housing to an exterior of the housing;
a flow diverter in the interior of the housing, the flow diverter being movable between a first diverter position and a second diverter position, wherein in the first diverter position, the fluid flow flows through the interior of the housing to operate the mud motor with at least the minimum fluid flow, and in the second diverter position less than the minimum fluid flow flows to the mud motor; and
a flow switch extending through the opening to engage the flow diverter, the flow switch being movable relative to the opening between a first switch position and a second switch position, wherein in the first switch position the flow diverter is in the first diverter position and in the second switch position the flow diverter is in the second diverter position;
wherein,
the flow diversion valve further comprises a mandrel disposed within the body and having a central bore at least partially defining a fluid flow path;
the mandrel shifts axially within the body in response to movement of the flow switch; and
shifting of the mandrel switches the valve between the first divertor position and the second divertor position.