Current helical buckling models are valid for vertical wells, but provide o
nly approximate solutions for horizontal wells. Solutions of the nonlinear
buckling equations for arbitrary well deviation have been developed, but ar
e too complex for practical use. This paper presents a set of correlations
that match the exact solutions extremely well, but are simple to use. These
correlations show the effects of well deviation on buckling shape, tubing
length change, contact force and bending stress.