WellCAD Basics - Advanced Logic Technology

Power( A, P ) Returns argument (A) raised to
power (P)
Power({GR},2)
Round( A, P) Returns argument (A) rounded
to specified precision (P)
Round({CAL}, 2)
Rad Convert Deg to Rad Rad (90) = 1.5708
Sin Sine (in RAD) Sin (1) = 0.8415
Sinh Hyperbolic Sine () Sinh(1) = 1.17520
Sqrt Square root Sqrt (2) = 1.4142
Tan Tangent (in RAD) Tan (0.7854) = 1
Y0 Bessel function Y0 Y0(1) = 0.08826
Y1 Bessel function Y1 Y1(1) = -0.78121
Borehole deviation functions:
NORTH(A , T, unit ) Computes the north coordinate
of a well path referred to by
azimuth and tilt.
EAST(A ,T ,unit) Computes the east coordinate of
a well path referred to by
azimuth and tilt.
AZI2( , , , , , ) Computes Azimuth (in deg)
from calibrated accelerometer
and magnetometer readings.
AZI3( , , , , , , ) Computes Azimuth (in deg)
from calibrated accelerometer
and magnetometer readings.
RBR( , ) Returns the clockwise measured
angle (deg) from Highside to
tool reference.
TILT2( , ) Computes borehole tilt (deg)
measured from the vertical.
TILT3( , , ) Computes borehole tilt (deg)
measured from the vertical.
PROJ(N , E , N) Calculates the projection of the
well path’s Northing and
Easting onto a given profile of
azimuth N.
NORTH({AZI}, {TILT},
0.3048)
EAST({AZI}, {TILT}, 1)
APPENDIX C - 497
AZI2({AccX}, {AccY},
{MagX}, {MagY}, {MagZ},
-10)
AZI3({AccX}, {AccY},
{AccZ}, {MagX}, {MagY},
{MagZ}, -10)
RBR({AccX}, {AccY})
TILT2({AccX}, {AccY})
TILT3({AccX},{AccY},
{AccZ})
PROJ({Northing},
{Easting}, 45)