Azimuth determination for vector sensor tools

Geometrical instruments – Indicator of direction of force traversing natural media – Process

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33304, G01C 1938

Patent

active

044334915

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). Borehole tilt is also derived.

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