F. Abbassian et Shl. Parfitt, A SIMPLE-MODEL FOR COLLAPSE AND POST-COLLAPSE BEHAVIOR OF TUBULARS WITH APPLICATION TO PERFORATED AND SLOTTED LINERS, SPE drilling & completion, 13(3), 1998, pp. 190-196
This paper describes a simple method of evaluating the collapse streng
th and post-collapse behavior of oil field tubulars subjected to exter
nal pressure. The method is based on elastic ovalization and subsequen
t plastic collapse by formation of a four-hinge mechanism. The resulti
ng predictions of collapse strength are compared with available collap
se test data, and other existing collapse equations. For post-collapse
behavior, model predictions are compared with available experimental
and numerical data The main attraction of che approach is its versatil
ity, demonstrated through application to collapse of perforated and sl
otted liners, prepacked screens, and its extension to collapse under n
on-uniform loading.