Appendix B - Nomenclature

MD	Measured Depth
TVD	True Vertical Depth
INC	Inclination
AZI	Azimuth
CL	Course Length
DL	Dogleg
DLS	Dogleg Section
BR	Build Rate
TR	Turn Rate
NS	North/South
EW	East/West
VS	Vertical Section
TFO	Tool Face Offset
KOP	Kick Off Point
HC	Hold Curve
CH	Curve Hold
RTE	Rotary Table Elevation
RKB	Reference Kelly Bushing
MSL	Mean Sea Level
GL	Ground Level
SF	Separation Factor
C-C OR C2C	Centre-to-Centre Distance