Borehole surveying apparatus

Details Borehole surveying apparatus Borehole surveying apparatus

1977-05-26

1978-12-26

Martin, Jr., William D.

Geometrical instruments

Indicator of direction of force traversing natural media

Borehole direction or inclination

33313, 33363K, G01C 904

Patent

active

041309421

ABSTRACT:
Apparatus for borehole surveying employing remote reading electro-optical sensors for providing digital signals represenatative of azimuth and multi-axis inclination for direct transmission to the surface for recording or use.

REFERENCES:
patent: 3077670 (1963-02-01), Waters
patent: 3544957 (1970-12-01), Smetanin et al.
patent: 3693142 (1972-09-01), Jones
patent: 3771118 (1973-11-01), Lichte, Jr. et al.
patent: 3791043 (1974-02-01), Russell
patent: 3833901 (1974-09-01), Fowler
patent: 4021774 (1977-05-01), Asmundsson et al.

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