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168 Part III Underbalanced Drilling Systems
Ignitor
Sample
Catcher
Flare Stack
Vaporizor
Separator BOP Stack
Production Choke
Tank Manifold N Pumpers
2
Liquid Tanks
Liquid Pump
Figure 8.1 A closed underbalanced drilling system.
Adjustable Partition Plates Velocity Reducer
Well Effluents
In
Gas Gas
Gas Out
Liquids Liquids Liquids
Hydrocarbons
Solids
Drilling Fluid
Transfer
Pump
Solids Solids
Continuous
To Oil Tanks Pressurized
Solids Transfer
Line
To Wellhead
Figure 8.2 A 4-phase separator used in underbalanced drilling operations.
