Two Phase vertical Separator sizing Process data 1 Gas flow rate MMscfd 2 Oil flow rate BOPD 3 Operating pressure Psia 4 Operating temperature R 5 Droplet size to be removed 6 Retention time Min 7 Specific gravity of gas 8 API gravity of liquid 9 Viscosity of liquid(µ) Cp 10 Compressibility factor (Z) Assumption 1 Drag co-efficient(Cd) 2 Rentention time min Calculation & Results 1 2 Density of gas(ρg) 3 Terminal velocity of droplets(Vt) ft/sec 4 Reynolds No 5 Calcuated drag co efficient(Ccd) 6 Gas Capacity Constraint 6a Diameter in 7 Liquid capacity constraint 7a height(h) ft 8 Seem to Seem length(Lss) 9 Slenderness ratio(SR) 10 Selected diameter(Ds) in 11 Selected Seem to Seem length(SLss) ft 12 Selected slederness ratio Note: O F µm O API Density of liquid(ρL) lb/ft 3 lb/ft 3 1) Start by assuming a value of CD, such as 0.34, and calculate Vt. The solve for Re. Then,may be solved for CD. If the calculated value of CD assumed value, the solution has been reached. If not, then the procedur repeated using the calculated CD as a new assumption.The original assum for CD was used because this is the limiting value for large Reynolds numbers.
Process data1Gas flow rate MMscfd102Oil flow
rateBOPD20003Operating pressurePsia10004Operating
temperatureOF60R5205Droplet size to be removedm1406Retention
timeMin37Specific gravity of gas0.68API gravity of
liquidOAPI409Viscosity of liquid()Cp0.01310Compressibility factor
(Z)0.84Assumption 1Drag co-efficient(Cd)0.854152Rentention
timemin3Calculation & Results1Density of
liquid(L)lb/ft351.5076501458Cd0.8542Density of
gas(g)lb/ft33.7087912088Vt0.54758267263Terminal velocity of
droplets(Vt)ft/sec0.5469359605Re107.20236590370.00037726284Reynolds
No107.0408692023Cal Cd0.85362273725Calcuated drag co
efficient(Ccd)0.8541790016Gas Capacity Constraint6aDiameter
in21.8859554437Liquid capacity
constraint7aheight(h)ft104.38521327848Seem to Seem
length(Lss)15.0321011065.9Slenderness ratio(SR)8.2420533912tr
(min)d (in.)h (in.)Lss (ft.)SR10Selected
diameter(Ds)in3632486.8113.576.7811Selected Seem to Seem
length(SLss)ft9.553055.5610.964.3912Selected slederness
ratio3.183638.589.553.184228.348.702.4822457.8711.165.583037.049.423.773625.728.482.83Note:12428.948.744.371)
Start by assuming a value of CD, such as 0.34, and calculate Vt.
Then, using Vt, solve for Re. Then,may be solved for CD. If the
calculated value of CD equals the assumed value, the solution has
been reached. If not, then the procedure should be repeated using
the calculated CD as a new assumption.The original assumption of
0.34 for CD was used because thisis the limiting value for large
Reynolds numbers.3018.527.883.153612.867.412.47
Sheet2Two Phase Horizontal Separator sizing
Process data1Gas flow rate MMscfd102Oil flow
rateBOPD20003Operating pressurePsia10004Operating
temperatureOF60R5205Droplet size to be removedm1406Retention
timeMin37Specific gravity of gas0.68API gravity of
liquidOAPI409Viscosity of liquid()Cp0.01310Compressibility factor
(Z)0.84Assumption 1Drag co-efficient(Cd)0.854192Rentention
timemin2Calculation & Results1Density of
liquid(L)lb/ft351.50765014582Density of
gas(g)lb/ft33.70879120883Terminal velocity of
droplets(Vt)ft/sec0.54692315444Reynolds No107.03836291865Calcuated
drag co efficient(Ccd)0.85418764576Gas Capacity
Constraint6aDiameter*effective lengthin6.31794711827Liquid capacity
constraint7aheight835.07748057498Seem to Seem
length75.92312338129Slenderness ratio:144.2046702083
