Definition - What does Slurry Yield mean?
Slurry Yield is the volume of slurry produced after mixing one sack of cement with the prescribed amount of water and binding additives as per API spec 10A. Neat cement slurry is produced when cement recommended in API spec 10A is mixed with the required amount of water and additives. There are 8 classes of cement as per the API specifications, i.e., type A to H cement.
Petropedia explains Slurry Yield
Slurry Yield can be expressed in following units:
- Cubic meter per kg (m3/kg) or
- Cubic feet per sack (ft3/sk)
In order to calculate the Slurry Yield, the following parameters should be calculated in the following order.
1. Additive weight per cement sack in pounds (lb)
Weight = percent of additive x 94 lb/sk
2. Total amount of water requirement in gallon per sack (gal/sk)
Water = water requirement by cement (gal/sk) + water requirement by additives (gal/sk)
3. Slurry volume (in gallon per sack, gal/sk)
Volume = (94 lb / Specific Gravity of cement x 8.33 lb/gal) + (weight of additive, Ib / Specific Gravity of additive x 8.33 lb/gal) + water volume, gal.
4. Slurry Yield (in ft3/sk)
Slurry yield = Slurry volume, gal/sk / 7.48 gal/ft3