Formulas
Rules of Thumb & General Information
Pi = 3.141
Circumference = diameter x Pi
Diameter = circumference / Pi or = circumference x .3183
Area of a circle = Pi (r2 ) where r= radius or 1/2 of diameter
Area of triangle = 1/2 base x height
Surface of sphere = circumference x diameter
or = diameter squared x Pi
Volume of sphere = diameter cubed x .5236
Weight of water = 8.34 lbs per gallon
Water pressure = 1 ft head water = .4335 psi
Line fill in bbls per mile = Pipe id squared x 5.13
Gallons per foot = Pipe id squared x .0408
BBLS per 1000 ft = diameter squared
How much gas in 1000 ft @ standard condition
= I.D. squared x line pressure x .372
1 Mph = 88 feet per minute = 1.48 ft per second
Velocity of liquid in mph = Bpd x .008 / pipe id squared
Velocity of gas in ft per second
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Q = gas volume cf / hr |