Number of sacks of cement required
Input(s)
H: Hole Size (in.)
OD: Outer Dia (in.)
ID: Inner Dia (in.)
\(\mathrm{h}_{\mathrm{c}}\): Feet to be Cemented \((\mathrm{ft})\)
\(\mathrm{E}\): Original+extra Volume Req in Percentage (fraction)
\(\mathrm{h}_{\mathrm{fc}}\): Feet Between Float Collar and Shoe \((\mathrm{ft})\)
Y1: Yield of Lead/filler Cement \(\left(\mathrm{ft}^{3} /\right.\) stroke \()\)
Y2: Yield of Tail Cement \(\left(\mathrm{ft}^{3} /\right.\) stroke \()\)
FC: Float Collar (Number of Feet Above Shoe) (ft)
Csd: Casing Setting Depth \((\mathrm{ft})\)
PO: Pump Output (bbl/stroke)
Output(s)
AC: Annular Capacity (ft3/ft) C:Casing Capacity \(\left(\mathrm{ft}^{3} / \mathrm{ft}\right)\)
\(\mathrm{N}_{\mathrm{f}}\): Number of Sacks of Cement Required (stroke)
\(\mathrm{N}_{\mathrm{a}}\): Sacks Required for Annulus (stroke)
\(\mathrm{N}_{\mathrm{c}}\): Sacks Required for Casing (stroke)
\(\mathrm{N}_{\mathrm{t}}\): Total Number of Sacks Required (stroke)
\(\mathrm{Cd}\): Casing Capacity in Barrels (bbl/ft)
SS: Number of Strokes Required to Bump the Plug (strokes)
Formula(s)
Reference(s)
Lapeyrouse, N. J., 2002, Formulas and Calculations for Drilling, Production and Workover, Second Edition, Gulf Professional Publishing, Page: 54.