Methods of correcting accelerometer and magnetometer...

Details Methods of correcting accelerometer and magnetometer... Methods of correcting accelerometer and magnetometer...

G - Physics

01

V

G01V 13/00 (2006.01) E21B 47/00 (2006.01)

Patent

CA 2628681

A method of correcting accelerometer and magnetometer measurements made in a well, comprising: - making a series of triaxial measurements with magnetometers and accelerometers in an interval of the well to derive measured values of gravitational acceleration g, magnetic filed intensity B and the sine of the magnetic inclination sinI; - obtaining known values of g, B and sinI for the interval; - determining values of a correction to be applied to the measured values by simultaneously minimising the difference between the measured values and the known values of g, B and sinI for the interval; and - applying the correction to the measured values to obtain in situ corrected values for g, B and sinI.

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