Method and apparatus for electrical surveys of subsurface struct

Details Method and apparatus for electrical surveys of subsurface struct Method and apparatus for electrical surveys of subsurface struct

1982-04-20

1989-03-28

Eisenzopf, Reinhard J.

Electricity: measuring and testing

Determining nonelectric properties by measuring electric...

324 72, 324348, G01V 308, G01V 315, G01R 3102

Patent

active

048167479

ABSTRACT:
Offshore or onshore electrical surveys of buried or submerged structures such as pipeline are conducted in a fixed-cell-to-moving-cell fashion either before or after one or more established pipe-to-electrolyte potentials can be obtained. The results of the fixed-cell-to-moving-cell survey are then corrected by a summation of the fixed-to-moving-cell recorded potential and the established potential at the location of the established potential to obtain a reliable electrical survey of the structure. As indicated, the fixed-cell-to-moving-cell survey may be conducted either before or after the established potential is obtained or either before or after a disposable wire survey using a direct connection to the structure.

REFERENCES:
patent: 3532980 (1970-10-01), Tucker
patent: 4365191 (1982-12-01), Weldon et al.

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