Safety Alert
Safety Alert 306 - Trapped Pressure Beneath a Tubing Plug Blows Work String from Well
Safety Alert 306 - Trapped Pressure Beneath a Tubing Plug Blows Work String from Well
- BSEE
- Safety Alert
- BSEE Safety Alert 306
- Line of FirePressure SystemsProcess Safety
- Line of firePressure systemsWell control
- Well intervention
- Operating and work procedures
- Upstream oil and gas
- Offshore installation
Summary
During offshore well recompletion, cutting tubing below a plug released trapped pressure and expelled 807 feet of work string. No injuries were reported. BSEE identified debris and sand obstructing plug flow and equalisation, and recommended pre-entry diagnostics, procedures addressing trapped pressure, and consideration of snubbing units where pressure remained uncertain.
Classifications: Line of fire; struck-by hazards.
Classifications: Pressure systems; stored pressure; pressurised systems; pressurized systems.
Classifications: Well control; kick control; loss of well control.
Classifications: Well intervention; workover; well servicing.
Classifications: Operating and work procedures.
Classifications: Upstream oil and gas; oil and gas extraction; upstream petroleum.
Classifications: Offshore installation; offshore platform; offshore rig.
BSEE Safety Alert 306. Themes: line of fire, pressure systems, process safety.