Casing Burst Pressure

Definition - What does Casing Burst Pressure mean?

Casing Burst Pressure is a theoretical internal pressure exerted on the walls of the casing as well as the casing joints that can fail because of increased amount of internal pressure. All the wells are designed by considering the Casing Burst Pressure value as an important key factor for well control and contingency operations.

Petropedia explains Casing Burst Pressure

A Casing Burst Pressure situation arises due to the expansion of natural gas when it is on its way to the well surface. It expands due to a change in temperature, and pressure conditions and exerts tremendous amount of internal pressure to the wall of the well casing. When the internal pressure becomes higher than the external pressure, the well casing is exposed to the condition of burst pressure loading. Minimum burst pressure that can rupture the well casing can be found by using the following equation:

Where,

= minimum burst pressure in psi

= minimum amount of yield strength in psi

t = wall thickness in inches

D = outside diameter of pipe

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