Devices for measuring the azimuth and the slope of a drilling li

Details Devices for measuring the azimuth and the slope of a drilling li Devices for measuring the azimuth and the slope of a drilling li

1978-11-21

1981-01-13

Martin, Jr., William D.

Geometrical instruments

Indicator of direction of force traversing natural media

Borehole direction or inclination

33312, 33318, G01C 1938, E21B 47024

Patent

active

042441161

ABSTRACT:
The invention relates to devices for measuring the azimuth and the slope of drilling line. These devices comprise, in a container 1, a gyroscope 5 having two principal axes of sensitivity X--X and Y--Y and an accelerometer 12 having two principal axes of sensitivity parallel to those of the gyroscope 5; this gyroscope 5 is connected to a circuit to determine the component of the Earth's rotation vector along the axis of the drilling line.

REFERENCES:
patent: 3753296 (1973-08-01), Van Steenwyk
patent: 3938256 (1976-02-01), Crocker
patent: 4071959 (1978-02-01), Russell et al.

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