Two Phase Separator Sizing

Two Phase vertical Separator sizing Process data 1 2 3 4 5 6 7 8 9 10

Gas flow rate Oil flow rate Operating pressure Operating temperature

MMscfd BOPD Psia O F R µm Min

Droplet size to be removed Retention time Specific gravity of gas API gravity of liquid Viscosity of liquid(µ) Compressibility factor (Z)

O

API Cp

10 2000 1000 60 520 140 3 0.6 40 0.013 0.84

Assumption 1 Drag co-efficient(Cd) 2 Rentention time

min

0.85415 3

Calculation & Results 1 2 3 4 5 6 6a 7 7a 8 9 10 11 12

Density of liquid(ρL) Density of gas(ρg) Terminal velocity of droplets(Vt) Reynolds No Calcuated drag co efficient(Ccd) Gas Capacity Constraint Diameter Liquid capacity constraint height(h) Seem to Seem length(Lss) Slenderness ratio(SR) Selected diameter(Ds) Selected Seem to Seem length(SLss) Selected slederness ratio

lb/ft3 lb/ft3 ft/sec

51.5077 3.70879 0.54694 107.041 0.85418

in

21.886

ft

104.385 15.0321 8.24205 36 9.55 3.18

in ft

Note: 1) 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 this is the limiting value for large Reynolds numbers.

Cd Vt Re Cal Cd

0.854 0.547583 107.2024 0.853623

0.000377

. tr (min) 3

2

1

d (in.) 24 30 36 42 24 30 36 24 30 36

h (in.) Lss (ft.) SR 86.81 13.57 55.56 10.96 38.58 9.55 28.34 8.70 57.87 11.16 37.04 9.42 25.72 8.48 28.94 8.74 18.52 7.88 12.86 7.41

6.78 4.39 3.18 2.48 5.58 3.77 2.83 4.37 3.15 2.47

Two Phase Horizontal Separator sizing Process data 1 2 3 4 5 6 7 8 9 10

Gas flow rate Oil flow rate Operating pressure Operating temperature

MMscfd BOPD Psia O F R µm Min

Droplet size to be removed Retention time Specific gravity of gas API gravity of liquid Viscosity of liquid(µ) Compressibility factor (Z)

O

API Cp

10 2000 1000 60 520 140 3 0.6 40 0.013 0.84

Assumption 1 Drag co-efficient(Cd) 2 Rentention time

min

0.85419 2

Calculation & Results Density of liquid(ρL) Density of gas(ρg) Terminal velocity of droplets(Vt) Reynolds No Calcuated drag co efficient(Ccd) Gas Capacity Constraint 6a Diameter*effective length 7 Liquid capacity constraint 7a height 8 Seem to Seem length 9 Slenderness ratio: 1 2 3 4 5 6

lb/ft3 lb/ft3 ft/sec

51.5077 3.70879 0.54692 107.038 0.85419

in

6.31795 835.077 75.9231 144.205