Downhole motor tool

Details Downhole motor tool Downhole motor tool

E - Fixed Constructions

21

B

E21B 23/00 (2006.01) E21B 36/04 (2006.01) E21B 41/00 (2006.01) F03G 7/06 (2006.01)

Patent

CA 2260381

An apparatus and method for transporting a downhole tool in a borehole. A phase change material such as a shape memory metal is activated to engage the borehole and to transport the tool through the borehole. After the tool has been advanced in the borehole, the phase change material is deactivated to release from the borehole wall, and advances into position to continue the transport process. An extension can be engaged with the phase change material to extend the movement range of the phase change material. The phase change material actuator requires few moving parts and can be integrated with other tool components. The invention can operate in opposite directions within a borehole and can replace wellbore tractors and other locomotive tools.

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