Cement Slurry Volume Calculator

Calculate cement, water, and additive requirements for well cementing operations

Cement Job Parameters

Enter slurry requirements or calculate from annular volume

Typical: 50-100% for open hole
Cement Properties
API: Class G = 5.0 gal/sk
Portland cement ~3.14
Calculated from mix water and cement SG
Slurry Design (Optional)
% by weight of cement

Cement Job Results

Enter parameters and click Calculate

API Cement Class Reference

Class Depth Range Mix Water Density Yield
A0-6,000 ft5.2 gal/sk15.6 ppg1.18 ft3/sk
C0-6,000 ft6.3 gal/sk14.8 ppg1.32 ft3/sk
G0-8,000 ft5.0 gal/sk15.8 ppg1.15 ft3/sk
H0-8,000 ft4.3 gal/sk16.4 ppg1.06 ft3/sk

Formula Reference

Slurry Yield

Yield (ft3/sk) = (94 / (SG_cement x 62.4)) + (Water gal/sk x 0.1337) Where: 94 = Weight of one sack of cement (lb) SG_cement = Cement specific gravity (~3.14) 62.4 = Density of water (lb/ft3) 0.1337 = Conversion factor (ft3/gal)

Number of Sacks Required

Sacks = Slurry Volume (ft3) / Yield (ft3/sk) = Slurry Volume (bbl) x 5.615 / Yield (ft3/sk)

Slurry Density

Slurry Density (ppg) = (94 + (Water gal/sk x 8.33)) / (Yield x 7.48) Or from components: Density = Total Mass / Total Volume

Water/Cement Ratio

W/C Ratio = (Water gal/sk x 8.33) / 94 = Weight of water / Weight of cement

Excess Volume

Gross Volume = Net Volume x (1 + Excess%/100) Typical excess factors: - Cased hole: 5-10% - Open hole (good condition): 25-50% - Open hole (washouts): 50-100%+