C

Concentration

Concentration for cement or spacer additives. There are only 2 kinds of additives: liquid or solid.

• Cement additives:
• For liquid, there are 2 units: (gps), (gphs)
• (gps) – gallon per sack of cement
• (gphs) – gallon per hundred sacks of cement
• For solid, there are 4 units: (% bwoc), (lb/sk), (lb/gal), (% bwow)
• (% bwoc) – weight percent (by the weight of cement)
• (lb/sk) – pound per sack of cement
• (lb/gal) – pound per gallon of water in the mixture, not the cement slurry
• (% bwow) – weight percent (by the weight of water)
• Spacer additives:
• For liquid, there is 1 unit: (gpb) – gallon per barrel
• For solid, there is 1 unit: (ppb) – pound per barrel