Method and apparatus for logging non-circular boreholes

Details Method and apparatus for logging non-circular boreholes Method and apparatus for logging non-circular boreholes

1995-09-22

2000-05-23

Fulton, Christopher W.

Geometrical instruments

Gauge

Internal

33302, 33303, 335442, E21B 4708, G01B 512

Patent

active

060652187

ABSTRACT:
The invention relates to a logging method and apparatus adapted for use in non-circular boreholes which, in one embodiment, comprises the use of a first and a second sonde, each sonde having: a pad adapted for contact with the borehole wall, at least a sensor on each pad, and an extendable arm for keeping the pad against the wall of the borehole. The first and second sonde produce measurements related to the same property of the formations, and the first and the second sonde are connected so as to keep the pads aligned with a 90.degree. azimuthal spacing therebetween.

REFERENCES:
patent: 2846190 (1958-08-01), Saurenman
patent: 2864173 (1958-12-01), Castel
patent: 3648515 (1972-03-01), Youmans
patent: 3772794 (1973-11-01), Hopler, Jr.
patent: 4506219 (1985-03-01), Lee
patent: 4595055 (1986-06-01), Vannier
patent: 5101104 (1992-03-01), Schroeder
patent: 5565624 (1996-10-01), Deboaisne et al.
patent: 5629480 (1997-05-01), Herget

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