Abstract: The system for anchoring a downhole tool to a casing includes a spiral threaded engagement and a raised spiral threaded engagement between a barrel slip device and first and second cones. The first cone is moveable by a piston in a piston housing to be closer to the second cone within the slip device. The second cone is locked in axial position along the mandrel and locked from rotation around the mandrel by an end housing, such that the barrel slip device is forced to expand from an initial diameter in a run-in configuration to an extended diameter in a set configuration. The spiral threaded engagement of the first cone is in the opposite spiral direction to the spiral threaded engagement of the second cone. The invention includes both the method of assembling the system for deployment into the casing and the method of anchoring the system to the casing.

Abstract: The apparatus for anchoring a downhole tool to a casing includes a spiral threaded engagement and a raised spiral threaded engagement between a slip device and first and second cones. The first cone is moved closer to the second cone within the slip device to expand the slip device from an initial diameter in a run-in configuration to an extended diameter in a set configuration. The initial diameter corresponds to the spiral threaded engagement, and the extended diameter corresponds to the raised spiral threaded engagement. The spiral threaded engagement of the first cone is in the opposite spiral direction to the spiral threaded engagement of the second cone. There are multiple locking systems incorporated to prevent premature expansion and reverse rotating the cones from the slip device. The invention includes both the method of assembling the apparatus and the method of using the apparatus to anchor to a casing.