Well control · Drilling
Choke & Kill Manifold
A group of high pressure valves and piping with at least two adjustable chokes, tied to the BOP stack by the choke line, plus a kill line to pump into the well.
What it does
During well control, well fluid flows through the choke line to the choke, which drops the pressure. The kill line carries kill fluid from the rig pumps into the well.
Basics
| Chokes | At least two, adjustable |
| Choke line | BOP stack to the choke manifold |
| Kill line | Rig pumps to the BOP stack |
| Covered by | API Standard 53 |
Common failures
- A choke that cannot hold the required pressure
Troubleshooting
- Symptom
- Choke damaged or plugged during a well control job
- Likely cause
- Choke wear
- What to check
- Shift the flow to the second choke and repair the first