Releasable well tool stabilizer

Details Releasable well tool stabilizer Releasable well tool stabilizer

E - Fixed Constructions

21

B

166/71

E21B 17/10 (2006.01) E21B 17/06 (2006.01) E21B 31/00 (2006.01)

Patent

CA 2028516

RELEASABLE WELL TOOL STABILIZER ABSTRACT OF THE DISCLOSURE A mechanism for accurately positioning a well tool in axially concentric relationship to a well conduit comprises a housing having a plurality of stabilizer linkages mounted thereon with one end of each linkage being pivotally secured to the housing and the other end free to move in an axial direc- tion. A compression spring engages a force transmitting con- nection to the other ends of the stabilizer linkages to bias same to a radially expanded position engaging the conduit wall. The connection between the compression spring and the stabilizer linkage includes two telescopically related sleeve elements which are secured together by a shear screw. In the event that the stabilizer linkage becomes stuck in the well, upward jarring movements of the housing will shear the shear screw and permit the stabilizer linkages to collapse radially inwardly and thus permit removal from the well.

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