Sonde of electrodes on an earth drill for measuring the electric

Details Sonde of electrodes on an earth drill for measuring the electric Sonde of electrodes on an earth drill for measuring the electric

1988-05-24

1990-03-27

Strecker, Gerard R.

Electricity: measuring and testing

Of geophysical surface or subsurface in situ

Using electrode arrays, circuits, structure, or supports

175 50, 175323, 324356, 324369, G01V 318, E21B 4700, E21B 4900, E21B 1722

Patent

active

049124153

ABSTRACT:
A sonde has an at least approximately cylindrical drill-stem member, whereby the drill-stem member may be coupled with other drill-stem members into a drill string. A spiral winding is longitudinally about the drill-stem member for conveying drilled out earth up to a surface of the earth when the drill-stem member is rotated into the earth, whereby the drill-stem member is an auger. At least one longitudinal surface portion of the drill-stem member is an electrical insulator that extends inwardly of the surface portion at least part of a radius of the drill-stem member. At least one measuring electrode is embedded in the electrical insulator. A connecting arrangement is in the drill-stem member for connecting the measuring electrode to electric operation and measuring equipment, whereby the auger is also an electrically logging sonde.

REFERENCES:
patent: 2809014 (1957-10-01), Lawrence et al.
patent: 3085639 (1963-04-01), Fitch
patent: 3268801 (1966-08-01), Clements
patent: 4393947 (1983-07-01), Lutze et al.
patent: 4494072 (1985-01-01), Jeter et al.
patent: 4699226 (1987-10-01), Muller et al.

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