Failure Analysis of Tubing Collapse in a Gas Well

Table 7

Stress load comparison results of simulated collapse test and failed tubing in the well.

Sample	Axial load (kN)	External pressure (MPa)	Results	Remarks
The same batch of tubing	1,146	52.5	The pipe body was collapsed	There are slight differences in the performance of the same batch of tubing, which can be ignored
Failed tubing in the well	1,146	52.3	The pipe body was collapsed