1. Flow Network Construction
Gas Lift Scenario
Flow Network Construction

2. Draw the real world diagram indicating measurement points
Compressor 2
Compressor 3
Compressor 1
Separator
Wing & Master Valve
Controller or Casing Choke
Flowline Choke
Perforations
Tubing
Casing
Lift-gas
Production
To Well
From Well 2 3 4 5 1 11 12 13 15 14 10 16 21 20 22 24 23 25 27 26
Gas Header
Production Header
Gas Lift Valve
Packer
Valve
Choke
Measurement #

3. Description of Measurement Points in Diagram1
Bottom hole pressure
Well (Subsurface) 2
Bottom hole temperature 3
Flowing tubing head pressure
Well (Surface) 4
Annulus pressure 5
Lift gas pressure (CHP) 6
SSSV status 7
SSV status 8
Chemical injection flow (Injection gas) 9
Chemical injection (Injection gas) ppm
N/A 10
Lift gas control valve percent open 11
Lift gas rate setpoint 12
Lift gas pressure (upstream of meter) 13
Lift gas meter differential pressure (dp) 14
Lift gas meter temperature (upstream of control valve) 15
Lift gas flow rate 16
Lift gas temperature
n/a 17
Chemical injection flow (Production) 18
Chemical injection (Production) ppm 19
Sand detection
Well (Flow line) 20
Flow line pressure differentual 21
Flow line pressure 22
Flow line temperature 23
Bulk lift gas temperature
Injection Manifold 24
Bulk lift gas pressure 25
Total gas production rate 26
Water production rate 27
Net oil production rate

4. Draw Boundary around items with no measurements
Compressor 2
Compressor 3
Compressor 1
Separator
Wing & Master Valve
Controller or Casing Choke
Flowline Choke
Perforations
Tubing
Casing
Lift-gas
Production
To Well
From Well 2 3 4 5 1 11 12 13 15 14 10 16 21 20 22 24 23 25 27 26
Gas Header
Production Header
Gas Lift Valve
Packer A C B D E F G H
Valve
Choke
Measurement #
Unit Boundary
Unit Name

5. The boundary becomes a Unit in the flow network.
From Well
Compressor 2
Compressor 3
Compressor 1
Separator
Lift-gas
Production
To Well 2 3 4 5 1 11 12 13 15 14 10 16 21 20 22 24 23 25 27 26 D B A G C E F H
Measurement #
Unit
Flow (from/to port)