Method and device for making geophysical measurements within a w

Details Method and device for making geophysical measurements within a w Method and device for making geophysical measurements within a w

1984-12-04

1987-08-11

Tarcza, Thomas H.

Communications, electrical: acoustic wave systems and devices

Seismic prospecting

Well logging

181102, 73151, 175 99, G01V 100, G01V 140, E21B 418

Patent

active

046866531

ABSTRACT:
A method and device for making geophysical measurements in a wellbore comprising a measuring string of a plurality of measuring tools displaced along a borehole wall connected to a surface control unit by a traction system including a cable, guide pulley, connection head and junction box. The measuring tools are displaced at a relative velocity which is equal and opposite to the absolute velocity of the traction system in order to reduce the absolute velocity of the measuring tools to zero during measurement periods. The relative velocity of the tools is in the same direction as the absolute velocity of the traction system between measurement periods, with the result that the absolute velocity of the measuring tools during these periods is higher than the absolute velocity of the traction system.

REFERENCES:
patent: 2651027 (1953-09-01), Vogel
patent: 2946578 (1960-07-01), Smaele
patent: 3690164 (1972-09-01), Gabillard et al.
patent: 3827512 (1974-09-01), Edmond
patent: 3876971 (1975-04-01), Wuenschel
patent: 3883841 (1975-05-01), Norel et al.
patent: 4114721 (1978-09-01), Glenn
patent: 4130816 (1978-12-01), Vogel et al.
patent: 4325259 (1982-04-01), Willertz

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