Pressure (Collapse and Burst) loads on casing
This article describes the methods to quantify the different casing loads are presented. Internal and external pressure profiles are generally independent and therefore separate design loads will be generated.
The comparison of the internal and external pressure loads results in either a collapse load line or in a burst load line.
Collapse load
The collapse load at any vertical depth is the difference between the external pressure and the internal pressure at that depth.
Burst load
The burst load at any vertical depth is the difference . . .