Bøe · Pots · Taitel stability criteria — offshore pipeline-riser systems
Why severe slugging cycles form, blowdown mechanics, riser-base gas-lift physics, and active control schemes.
Bøe (1981) stability number — severe slugging if Π < 1:
Lp is the upstream pipeline gas-accumulation length (not the riser height) — it sets how much gas can compress against the riser-base liquid plug.
Pots et al. (1987) — adds the pipeline gas void fraction αg:
αg = vSG / (vSG + vSL): only the gas-filled fraction of the pipeline compresses, so Pots is more conservative than Bøe.
Critical vSG (Pots Π = 1 boundary):
Riser-base max (slug-out) pressure: