Flapper pad arrangement for logging sonde

Details Flapper pad arrangement for logging sonde Flapper pad arrangement for logging sonde

G - Physics

01

V

166/2, 349/8

G01V 11/00 (2006.01) E21B 17/10 (2006.01) E21B 47/026 (2006.01) G01V 3/20 (2006.01)

Patent

CA 1280687

A B S T R A C T In order to increase the angular field of observation of a logging sonde usable, in particular for dip metering, the sonde is equipped with measuring pads each comprising two independent flaps. The flaps of the same pad are hinged to a central element which is held permanently parallel to the axis of the sonde body, and they are applied against the wall of a borehole by blade springs. Each of the flaps carries an array of electrodes. The flaps of each of the measuring pads are circumferentially offset relative to each other so that the angular field of observation is increased without increasing the diameter of the sonde, once the pads have been retracted.

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