Logging method and apparatus using a sonde equipped with measuri

Acoustics – Geophysical or subsurface exploration – Well logging

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Details

181105, 367911, 166241, 324367, G01V 140

Patent

active

046142509

ABSTRACT:
Dip measurements and investigation of geological formations traversed by a deviated borehole is carried out by means of an apparatus comprising a measuring sonde and a cartridge connected to a cable. The sonde carries four measuring pads regularly distributed by means of articulated arms which keep the pads parallel to the axis of the sonde. The opposite arms are forced to stay symmetrical in relation to the sonde.
The sonde is connected to the cartridge so that its axis can depart angularly from the axis of the cartridge, enabling the latter to rest on the borehole wall. The pads have a length smaller than twice the transverse dimension D of the sonde.

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