INTERMEDIATE CASING DESIGN

Design the last $7-$inch intermediate casing for a $12,000-$deep vertical well. Find pressure$/$depth requirements from the provided Mud Weight Window. Assume an average gas density of $1\mathrm{.}10$ ppg $.$ The steel density is $65\mathrm{.}5$ ppg $.$

Design Factors:

Collapse: $1\mathrm{.}0$

Burst: $1\mathrm{.}1$

Tension: $1\mathrm{.}7$

a$)$ What would be the collapse load for a worst$-$case scenario?

b$)$ What would be the burst load for a worst$-$case scenario?

c$)$ What would be the burst load for an alternative case scenario? $($Hint: Use Frac pressure$)$

EMW $($ppg$)$