Method and apparatus for inspecting subsurface environments

Details Method and apparatus for inspecting subsurface environments Method and apparatus for inspecting subsurface environments

1991-03-04

1992-06-23

Neuder, William P.

Boring or penetrating the earth

With signaling, indicating, testing or measuring

Transparent inspection feature

166242, 166250, E21B 4700

Patent

active

051234920

ABSTRACT:
Methods for visual inspection of subsurface environments by emplacing a substantially visually clear pipe or casing into the subsurface environment and thereafter introducing visual inspection, means, such as a video camera, into the pipe, whereby inspection of the subsurface environments may be accomplished directly through the wall of the pipe. The inspection may also be accomplished by emplacing an opaque pipe provided with spaced part visually clear windows into the subsurface, and thereafter introducing visual inspection means into the pipe to inspect subsurface environments through the windows of the pipe. The invention additionally includes improved piping or casing which is constructed of typical opaque materials such as steel, but which is provided with visually clear windows appropriately spaced throughout the casing.

REFERENCES:
patent: 2971259 (1961-02-01), Hahnaw et al.
patent: 3958632 (1976-05-01), Buchman et al.
patent: 3974330 (1976-08-01), Askowith et al.
patent: 4391337 (1983-07-01), Ford et al.
patent: 4532545 (1985-07-01), Hanson
patent: 4855820 (1989-08-01), Barbour
patent: 4898241 (1990-02-01), Wittrisch
patent: 4934866 (1990-06-01), Gage

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