Geometrical instruments – Indicator of direction of force traversing natural media – Process
Patent
1983-12-06
1985-12-24
Little, Willis
Geometrical instruments
Indicator of direction of force traversing natural media
Process
33304, G01C 1938
Patent
active
045597138
ABSTRACT:
This invention relates to mapping or survey apparatus and methods, and more particularly concerns derivation of the azimuth output indications for such apparatus in a borehole from the outputs or output indications of either an inertial angular rate vector sensor (or sensors) and an acceleration vector sensor (or sensors), or a magnetic field vector sensor (or sensors), and from the outputs of an acceleration vector sensor (or sensors). At least one of such sensors in any instrument may be canted relative to the borehole axis. Borehole tilt is also derived.
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Engebretson Harold J.
LaHue Philip M.
Ott Paul W.
Van Steenwyk Brett H.
Applied Technologies Associates
Haefliger William W.
Little Willis
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