Use data given in Example $7\mathrm{.}8$ in the Textbook $($p$.331)$ and design intermediate and production casing strings for the conditions below.

$>$ Consider minimum cost design $($multiple grades and$/$or unit weights of casings to be used$).$

$>$ Consider a $500$ ft logistic constraint for both the intermediate and production designs.

$>$ Consider a pressure rating of $3000$ psi as the surface equipment constraint for the intermediate design.

$>$ Consider that the completion fluid and the mud densities are equal in the production design.

a$)(30$ points$)$ Design the intermediate casing, $($assume that tension design is based on burst loading conditions only$).$

b$)(20$ points$)$ Prepare the tension design of the intermediate casing using a safety factor of $1\mathrm{.}8.$ Also, show your results in a figure.

c$)(30$ points$)$ Design the production casing, $($assume that tension design is based on burst loading conditions only$).$

d$)(20$ points$)$ Prepare the tension design of the production casing using a safety factor of $2.$ Also, show your results in a figure.