Wells – Processes – With indicating – testing – measuring or locating
Reexamination Certificate
2007-08-07
2007-08-07
Tsay, Frank (Department: 3672)
Wells
Processes
With indicating, testing, measuring or locating
C166S250110, C166S066000
Reexamination Certificate
active
10998494
ABSTRACT:
A nuclear sensor on a bottomhole assembly (BHA) makes measurements of a property of an earth formation during continued rotation of the BHA. Magnetometers that are susceptible to bias error are deployed on the BHA to make measurements of the magnetic toolface angle. A processor separates the sensor measurements into azimuthal sectors while compensating for inherent time delays in the electronics, non-uniform rotation, and bias.
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Cruz Roger
Estes Robert A.
Foekema Nico
Hope Brent D.
Baker Hughes Incorporated
Madan Mossman & Sriram P.C.
Tsay Frank
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