Borehole tool orienting apparatus and systems

Details Borehole tool orienting apparatus and systems Borehole tool orienting apparatus and systems

1975-09-04

1976-06-22

Leppink, James A.

Boring or penetrating the earth

Boring with explosion in inaccessible hole

With position orienting or indicating

33304, 166 551, 166 65M, E21B 43119, E21B 4311

Patent

active

039645533

ABSTRACT:
Borehole orienting apparatus is provided wherein motion is imparted to a permanent magnet assembly to generate a moving magnetic field and receiver means are provided such that measurable signals are induced therein when the magnetic field is distorted due to the presence of a ferrous anomaly. The receiver means is rotated to produce an azimuthal scan such that there are induced in the receiver means signals from which the azimuthal location of the anomaly can be determined.

REFERENCES:
patent: 3032107 (1962-05-01), Bumble et al.
patent: 3105546 (1963-10-01), Ownby et al.
patent: 3105550 (1963-10-01), Ehlert
patent: 3154147 (1964-10-01), Lanmon
patent: 3294163 (1966-12-01), Lebourg
patent: 3307642 (1967-03-01), Smith
patent: 3426850 (1969-02-01), McDuffie, Jr.
patent: 3704749 (1972-12-01), Estes et al.

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