The choke manifold is an arrangement of valves, pipelines and chokes designed to control the flow from the annulus of the well during a well killing operation. It must be capable of:
• Controlling pressures by using manually operated chokes or chokes operated from a remote location.
• Diverting flow to a burning pit, flare or mud pits.
• Having enough back up lines should any part of the manifold fail.
• A working pressure equal to the BOP stack.
Since, during a gas kick, excessive vibration may occur it must be well secured.