Well bore measurement tool

Details Well bore measurement tool Well bore measurement tool

1986-06-18

1987-06-16

Jordan, Charles T.

Geometrical instruments

Area integrators

Electrical

33178E, 73783, 166 64, E21B 4708, G01B 334

Patent

active

046738908

ABSTRACT:
A caliper is mounted on two springs in a free-floating manner between interlockable upper and lower packers to be set in a well bore. The caliper has radially extendible arms which are extendible in response to independent forces exerted thereon as derived from the movement of a carriage driven by a single motor contained in the caliper tool. A clutch mechanism is used to lock the arms to precision measurement transducers only after the arms have been moved radially outwardly a sufficient distance. Other transducers for generating signals indicating the total movement of the arms and for indicating the forces exerted by the springs on the arms are included in the preferred embodiment.

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