Back reaming tool

Details Back reaming tool Back reaming tool

E - Fixed Constructions

21

B

E21B 10/26 (2006.01) E21B 10/28 (2006.01)

Patent

CA 2371740

A back reaming tool is disclosed which includes a tool body adapted to be coupled to a drill string, and at least one roller cone rotatably mounted to a leg and having cutting elements disposed thereon. The leg is removably coupled to the tool body. The at least one roller cone is open at only one axial end thereof.

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