EXPANDABLE SPIRAL THREADED APPARATUS AND METHOD FOR ANCHORING A DOWNHOLE TOOL TO A CASING, AND METHOD FOR ASSEMBLING THE APPARATUS

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.

Inventor(s): Damon NETTLES, Kwami ROBERTS, Tito ZABALA, David ALGIEN, Perry BATSON, Jianpeng YUE, Peng CHENG

CPC Classification: E21B23/01 (for anchoring the tools or the like ( - take precedence; anchoring of drives in the borehole ))

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