$-6"$ hole, vertical well with bit on bottom

$-19,000$ ft$.$ TD$,$ MW $=13\mathrm{.}8$ ppg

$-95/8",47$#$/$ft$.$ casing set at $9,000$ ft$.$

$-7"$ Liner, $26$#$/$ft$.$ set at $14,000$ ft$.$ with a $300$ ft$.$ overlap inside the $95/8"$ casing

$-4",14$ #$/$ft$.$ drillpipe

$-1,160$ ft$.$ of $4"$ HWDP $($Heavy Weight Drill Pipe$),27\mathrm{.}2$ #$/$ft$.$

$-550$ ft$.$ of $43/4"$ Drill Collars

$-5"$ x $10"$ triplex pump at $91\%$ efficiency and $90$ strokes$/$min

$-3$ mud pits. Each is $27$ ft$.$ x $10$ ft$.$ x $11$ ft$.$ deep. Each contains $10$ ft$.$ of mud when the drillstring is in the hole.

q$1-$Consider the same well drawn in previous problem.

After drilling an additional $600$ ft$.$ of formation, the Company Man decides to POOH $($Pull out of hole$)$ and check the bit.

Calculate the new volume distribution when we have the bit at surface considering the following as well:

$-$Mud lost over the shakers $($while drilling the $600$ ft$.$ of new formation$)=20$ bbl

$-30$ bbl of Base Oil was added $-$ assume mud weight change negligible

q$1-$Surface volume $($pit volume$)\_\_\_\_\_\_\_\_\_\_\_\_\_$ bbl

$1133\mathrm{.}84$

$1331\mathrm{.}48$

$1381\mathrm{.}96$

$1431\mathrm{.}84$

Drill string volume $\_\_\_\_\_\_\_\_\_\_\_\_\_$ bbl

$0$

$197\mathrm{.}55$

$204\mathrm{.}05$

$214\mathrm{.}50$

Hole volume $\_\_\_\_\_\_\_\_$ bbl

$1053\mathrm{.}49$

$1035\mathrm{.}94$

$1040\mathrm{.}94$

$1025\mathrm{.}94$

Hydrostatic pressure at the $7"$ liner shoe $\_\_\_\_\_\_\_\_\_\_\_\_$ psi

$12460\mathrm{.}6$

$10046\mathrm{.}4$

$10640\mathrm{.}6$

$11243\mathrm{.}6$

Hydrostatic pressure at bottom $\_\_\_\_\_\_\_\_\_\_\_\_$ psi

$10046\mathrm{.}4$

$14064\mathrm{.}96$

$10640\mathrm{.}6$

$12460\mathrm{.}6$