19.5.3 Inputs Required

Required input parameters for the weighting functions calculations:

Well site data:
Total gravity value
Total magnetic field value (MWD)
Magnetic Dip (MWD)
Horizontal magnetic field (function of total field and dip) (MWD)
Latitude (Gyro)

Survey data at each station:
Measured depth, Inclination, Azimuth, Tool face (early revisions)

Tool Model Terms:
Error sources included
Error magnitude for each source
Error propagation mode
Inclination bounds for change for mode or for each source (start, end)
Misalignment calculation method (ALT=1,2,3)
External reference method (gyro)
Running Speed (gyro)
Rotation of accelerometers between stations (R value, gyro))
Cant angle (gyro)
Running mode (sliding or rotating must be defined, either via IPM or as a parameter to control
propagation modes.)
Noise reduction factor at initialisations
Minimum distance between initialisations