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→Mud pump output: math
:<math>\mbox{D}_{\rm t} = (\mbox{L}_{\rm s} \times \mbox{D}_{l}{}^{2})/4118</math>
:<math>\mbox{D}_{\rm t} = (\mbox{L}_{\rm s} \times \mbox{D}_{l}{}^{2})/4118</math>
:<math>\mbox{D}_{\rm d} &= \mbox{L}_{\rm s} \times [(2 \times \mbox{D}_{\rm l}{}^{2}) - \mbox{D}_{\rm r}{}^{2}]/6176</math>
:<math>\mbox{D}_{\rm d} = \mbox{L}_{\rm s} \times [(2 \times \mbox{D}_{\rm l}{}^{2}) - \mbox{D}_{\rm r}{}^{2}]/6176</math>
'''''Example''''': The output of a triplex mud pump with an 11-in. stroke length and 6-in. liners installed is
'''''Example''''': The output of a triplex mud pump with an 11-in. stroke length and 6-in. liners installed is
:<math> \mbox{Bbl/min} = \mbox{Bbls/stroke} \times \mbox{Strokes/min}</math>
:<math> \mbox{Bbl/min} = \mbox{Bbls/stroke} \times \mbox{Strokes/min}</math>
:<math>&\\&\mbox{Gal/stroke} = \mbox{Bbls/stroke} \times 42\\&\\&\mbox{Gal/min} = \mbox{Gal/stroke} \times \mbox{Strokes/min}</math>
:<math> \mbox{Gal/stroke} = \mbox{Bbls/stroke} \times 42
:<math> \mbox{Gal/min} = \mbox{Gal/stroke} \times \mbox{Strokes/min}</math>
'''''Example''''': If the triplex pump previously discussed was operating at 95% volumetric efficiency at 98 strokes/min, the following calculations can be made:
'''''Example''''': If the triplex pump previously discussed was operating at 95% volumetric efficiency at 98 strokes/min, the following calculations can be made:
:<math> \mbox{Bbl/stroke} = 0.0962 \times 0.95 = 0.0914 \mbox{ bbl/stroke}</math>
:<math> \mbox{Bbl/stroke} = 0.0962 \times 0.95 = 0.0914 \mbox{ bbl/stroke}</math>
:<math>&\\&\mbox{Bbl/min} = 0.9814 \times 98 = 8.96 \mbox{ bbl/min}\\&\\&\mbox{Gal/stroke} = 0.0914 \times 42 = 3.84 \mbox{ gal/stroke}\\&\\&\mbox{Gal/min} = 3.84 \times 98 = 376 \mbox{ gal/min}</math>
:<math> \mbox{Bbl/min} = 0.9814 \times 98 = 8.96 \mbox{ bbl/min}</math>
:<math> \mbox{Gal/stroke} = 0.0914 \times 42 = 3.84 \mbox{ gal/stroke}</math>
:<math> \mbox{Gal/min} = 3.84 \times 98 = 376 \mbox{ gal/min}</math>
==Circulation or lag time==
==Circulation or lag time==