دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: The strain of material under axial force.

n: See axial deformation.

a fracture created with little or no plastic deformation.

the deformation of pipe in compression as it moves from straight to sinusoidal to helical shapes in the hole. Usually in the elastic range.

n: The special tool for repairing casing deformation. Made by eccentric shaft, ball, conic roll and joint.

n: plastic deformation of metal at a temperature low enough to insure or cause permanent strain.

n: the maximum stress a metal, subjected to compression, can withstand without a predefined amount of permanent deformation.

n: the buckling of tubing in a large-diameter pipe or casing.

compressional deformation of tubulars to the point where the tubing resembles a corkscrew. The condition may be temporary if the metal is not yielded past the elastic recovery point. Tubulars that are corkscrewed may be pumped through but will stick most

n: the action of earth stresses that results in folding, faulting, shearing, or compression of rocks.