Cement Slurry Volume & Sacks Calculator
Plan your cement job: annular slurry volume with excess, shoe track, sacks from slurry yield, mix water and displacement to bump the plug.
Formulas
Slurry volume
V = Annular cap × Length × (1 + excess) + Shoe trackSacks
Sacks = V (ft³) / Yield (ft³/sk)Displacement
Disp = Casing ID² / 1029.4 × Depth to float collarWorked example
GIVEN
- 12-1/4" hole × 9-5/8" casing
- 1,000 ft of fill
- Yield 1.18 ft³/sk, no excess
WORKING
- Cap = (150.06 − 92.64) / 1029.4 = 0.0558 bbl/ft
- V = 55.8 bbl = 313 ft³
- Sacks = 313 / 1.18
≈ 265 sacks
FAQ
How much excess should I add?
Common practice is 10–30% in gauge hole and up to 100% in washed-out open hole — use caliper data where available.
Run it with your well data
Field & Metric units, works offline, save and share results with your crew.
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Reference only. Always verify against your company procedures and well-control certification.