Survey apparatus and method employing canted tilt sensor

Details Survey apparatus and method employing canted tilt sensor Survey apparatus and method employing canted tilt sensor

1979-05-07

1981-05-05

Martin, Jr., William D.

Geometrical instruments

Indicator of direction of force traversing natural media

Borehole direction or inclination

33312, 33313, 33366, G01C 1938, E21B 47024

Patent

active

042650283

ABSTRACT:
A borehole mapping and navigational instrument which travels up and down in a well. The instrument includes a housing which supports at least a rate gyroscope, accelerometer, and an electric motor to rotate the accelerometer about an axis which is canted about the axis of the housing. Since the accelerometer is rotated, its tilt sensitive axis then effectively has components along the X and Y directions normal to the Z axis, whereby components along all three axis are provided.

REFERENCES:
patent: 4040189 (1977-08-01), LaCoste

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