Method and apparatus for determining a depth correction for a lo

Details Method and apparatus for determining a depth correction for a lo Method and apparatus for determining a depth correction for a lo

1994-04-07

1996-06-04

Chilcot, Richard

Measuring and testing

Borehole or drilling

Downhole test

E21B 4700

Patent

active

055222609

ABSTRACT:
A method of determining a depth correction for a logging tool that is moved, while suspended from a cable, along a well, the method being of the type in which a measurement of tool depth is performed at the surface at successive instants, the tool comprising at least two sensors suitable for measuring a characteristic of the well at each instant said two sensors being offset longitudinally in the displacement direction of the tool. The method comprises, at each of said instants:

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patent: 5062048 (1991-10-01), Coulter et al.
patent: 5198770 (1993-03-01), Decorps et al.
patent: 5351531 (1994-10-01), Kerr

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