Centralizer-based survey and navigation device and method

Details Centralizer-based survey and navigation device and method Centralizer-based survey and navigation device and method

2011-01-18

2011-01-18

Stephenson, Daniel P (Department: 3676)

Boring or penetrating the earth

With signaling, indicating, testing or measuring

Tool position direction or inclination measuring or...

Reexamination Certificate

active

07870912

ABSTRACT:
A Centralizer based Survey and Navigation (CSN) device designed to provide borehole or passageway position information. The CSN device can include one or more displacement sensors, centralizers, an odometry sensor, a borehole initialization system, and navigation algorithm implementing processor(s). Also, methods of using the CSN device for in-hole survey and navigation.

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International Preliminary Report on Patentability and Written Opinion, Mar. 12, 2009.

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