Borehole sidetrack locator

Details Borehole sidetrack locator Borehole sidetrack locator

E - Fixed Constructions

21

B

E21B 7/04 (2006.01) E21B 23/03 (2006.01)

Patent

CA 2147901

The present invention is an apparatus for guiding a borehole servicing tool string into a sidetrack of a borehole. In one embodiment, a centralizer displaces a pivotally-mounted housing towards the sidetrack. A rounded nose on the bottom of the housing enables free passage of the housing into the sidetrack. In an alternative embodiment, a rounded nose is attached to a hinge at the bottom of the housing, and the tool housing is rotatably mounted to the tool string. The nose is displaced axially about the hinge, and the housing is rotated until the nose is aligned with the sidetrack as indicated by an orientation measuring ring device disposed within the housing.

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