Thermal Expansion Casing Collars (TECC)
Vanguard Oil Tools & Services
Available in 5 1/2", 7" and 9 5/8". Shear values dependent on well design.
Installed in casing string to prevent casing buckling due to thermal expansion or reservoir compaction (or dilation)
Available in most common sizes
Run within the producing reservoir
Proven to mitigate casing buckling