Figures & data
Figure 1. Severe slugging mechanism.
Figure 2. Stable and unstable regions for the riser base pressure as a function of gas flow rate.
Figure 3. Schematic of pipeline-riser system.
Figure 4. Pressure drop across valve as a function of gas flow rate.
Figure 5. Use of choking to obtain stable flow.
Figure 6. Pipeline-riser configuration with controlled choking.
Figure 7. Geometry of pipeline-riser system.
Table 1. Fluid properties.
Table 2. Properties of pipe and insulation materials.
Figure 8. Average riser base pressure against gas flow rate.
Figure 9. Stability curve showing the operating condition.
Figure 10. Riser base pressure against valve opening.
Table 3. Case study of typical slug flow condition.
Figure 11. System response to active feedback control.
Figure 12. System response to active feedback control at 27% valve opening.
Figure 13. System response to active feedback control at 29% valve opening.
Figure 14. System response to active feedback control at 30% valve opening.
