A triplex pump with $12$in$.$strokes$,2\mathrm{.}75$in$.$rods$,$ and $6$in$.$liners was operated at$3,300$g $$and $100$

cyclesmin $$for $8$minutes with the suction tank isolated from the return mud flow. The suction tank has

a width of$7-$ft $$and a length of$20-$ft$.$

a$7,000$ft$$of$5$in$.,19\mathrm{.}5$lbmft $$drillpipe is $$present in$$a$7,000$ft $$wellbore with $12\mathrm{.}25$

in$.$of $$diameter$.$