Relationship between traveling block speed and fast line speed

Input(s)

$\mathrm{v}_{\mathrm{f}}$: Fast Line Speed (fpm)

n: Number of Lines Strung B/w Crown and Traveling Block (unitless)

Output(s)

$\mathrm{v}_{\mathrm{tb}}$: Traveling Block Velocity (fpm)

Formula(s)

$$ \mathrm{v}_{\mathrm{tb}}=\frac{\mathrm{v}_{\mathrm{f}}}{\mathrm{n}} $$

Reference(s)

Samuel. E Robello. 501 Solved Problems and Calculations for Drilling Operations. Sigma Quadrant. 2015. Houston, Texas, Page: 10.