Abstract:

The tubing column subjected to weight and reaction forces of constraint applied by the packer and the wall of a well is usually in a multi-wave buckling state. This paper evaluates the maximum bending moment of the tubing, The evaluated value is two times as large as that obtained on the basis of the helical buckling model (Ref, 1). This paper presents the formula used to calculate the allowable packing force. It can be simply used in the design of the tubing selled with a packer.

Key words: Maximum bending moment, Packing force, Multi-wave buckling, Bessel Function, Weighted residuals method