So, 99.6% of the frac job is sand (or something like it) and water. The rest is "chemicals". Of course, this number varies wildly based on recipe - 92-99% is usually the range. You would figure out the other chemicals the same way. Problem is percentages could be in percentage or decimal format and/or those numbers could just be straight up wrong, or you aren't provided other info that is relevant in the calc.
Max Ingredient Concentration in HydroFracture Fluid for water (% by mass): 91.0
Max Ingredient Concentration in HF Fluid for silica (% by mass): 8.6
Gallon of water weight (lbs./gal): 8.34
Barrel (bbl) = 42 gallons
Total weight of water (lbs.) = TBV * Gallon of water weight = 137,522,030
Total weight of frac job (lbs.) = Total weight of Water/Water concentration in frac = 137,522,030 / (91.0/100) = 151,123,110
Proppant weight, Silica, (lbs.) = 151,123,110 * (8.6/100) = 12,996,588
Barrels of water = 16,489,452 / 42 = 392,606
So, 99.6% of the frac job is sand (or something like it) and water. The rest is "chemicals". Of course, this number varies wildly based on recipe - 92-99% is usually the range. You would figure out the other chemicals the same way. Problem is percentages could be in percentage or decimal format and/or those numbers could just be straight up wrong, or you aren't provided other info that is relevant in the calc.