Milling tool and combined stabiliser

Details Milling tool and combined stabiliser Milling tool and combined stabiliser

E - Fixed Constructions

21

B

166/10

E21B 43/11 (2006.01) E21B 10/26 (2006.01) E21B 17/10 (2006.01) E21B 29/00 (2006.01)

Patent

CA 2014145

A milling tool (3-5; 51-53) in combination with a stabiliser therefor has a milling tool with a body (51) with a plurality of radially extending and circumferential blades (3) disposed about the body. The lower portion of the body (51) has a portion (57) upon which is located a stabiliser (70), the stabiliser comprising a sleeve (71) about which are disposed a plurality of helically disposed fins (75). The sleeve (71) has an internal screw thread (73) for mating with an external screw thread (55) on the body (51). By providing a single milling tool on site and a plurality of separate pilot stabilisers so stabiliser sleeves can be quickly and easily secured to the milling tool thereby eliminating the necessity of cutting the fins to the required radial height when on site.

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