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182 Part III Underbalanced Drilling Systems
Illustrative Example 9.1 (Continued )
Velocity (ft/s)
0 5 10 15 20 25 30
0
1000
2000
3000
Depth (ft) 4000 Annular profile
In-pipe profile
5000
6000
7000
8000
9000
Figure 9.3 Calculated velocity profile along the flow path.
GLR (dimensionless)
0 2 4 6 8 10 12 14
0
1000
2000
3000
Depth (ft) 4000 Annular profile
In-pipe profile
5000
6000
7000
8000
9000
Figure 9.4 Calculated GLR profile along the flow path.
