Method and apparatus for mapping the trajectory in the...

Details Method and apparatus for mapping the trajectory in the... Method and apparatus for mapping the trajectory in the...

2008-06-17

2008-06-17

Bennett, G. Bradley (Department: 2859)

Geometrical instruments

Indicator of direction of force traversing natural media

Borehole direction or inclination

C033S302000, C033S304000, C033S310000, C175S045000

Reexamination Certificate

active

07386942

ABSTRACT:
An apparatus for determining the orientation of a borehole at a point along the borehole, includes a tiltmeter for measuring the inclination of the borehole relative to the vertical, a vector magnetic sensor for measuring the amplitude of the component of the Earth's magnetic field along the axis of the borehole, and means for computing the orientation of the tubular sonde from the measurements of inclination and amplitude of the component of the Earth's magnetic field aligned with axis of the sonde.

REFERENCES:
patent: 2282431 (1942-05-01), Smith et al.
patent: 3587175 (1971-06-01), Armistead
patent: 4071959 (1978-02-01), Russell et al.
patent: 5172480 (1992-12-01), Labuc et al.
patent: 5435069 (1995-07-01), Nicholson
patent: 5960370 (1999-09-01), Towle et al.
patent: 6631563 (2003-10-01), Brosnahan et al.
patent: 6883240 (2005-04-01), Russell et al.

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