Centralizing devices for use down-well

Details Centralizing devices for use down-well Centralizing devices for use down-well

E - Fixed Constructions

21

B

166/71

E21B 17/10 (2006.01)

Patent

CA 1221909

ABSTRACT OF THE DISCLOSURE A centralizing device for use down-well in maintaining an operational tool in a location accurately centralized in relation to the axis of the bore-hole irrespective of the angular orientation of the device and associated tool. The device comprises a shaft and at least three two-armed linkages angularly biased at their common axes towards the wall of the bore-hole by arrays of springs acting through slide blocks on the shaft. Axial movement of the blocks is limited by a central collar secured to the shaft.

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