A preliminary oil well drilling program has been completed for a new well. The production string is of OD $=5$ inches set at a depth of $12,000ft.$ A production string program $[$detailing the applicable Casing depth, casing OD$,$ hole size, and mud weight$]$ has been proposed $($see below$).$

Using the API Casing Data Sheet $($in Blackboard$),$ and safety factors $($burst $=1\mathrm{.}1,$ collapse $=1\mathrm{.}2,$ tension $=1\mathrm{.}7),$ select appropriate:

A$)$ Casing weight and grade for the Surface casing

B$)$ Casing weight and grade for the Production casing

$\backslash$table$[[$Drilling section,$\backslash$table$[[$Casing Depth$],[($feet$)]],\backslash$table$[[$Casing size$],[($inches$)]],\backslash$table$[[$Hole size $=$ Bit$],[$Size $($inches$)]],\backslash$table$[[$Mud Weight$],[($ppg$)]]],[$Surface casing,$1500,10\mathrm{.}75,15,8\mathrm{.}85],[$Intermediate$,4500,7\mathrm{.}625,9\mathrm{.}875,9\mathrm{.}65],[\backslash$table$[[$Production$],[$casing$]],12000,5,6\mathrm{.}5,10\mathrm{.}7]]$