Investigation Report
Well Gas Release During Wireline Retrieval
04-27-2020 03:00 G35292 EW 305 Shutdown from gas release
- BSEE
- Investigation Report
- Unknown
- Hydrocarbon releaseMechanical failurePressure systems
- Well intervention
- Storage tanksValve
- Energy and process isolationPressure relief
- Upstream oil and gas
- Offshore installation
Summary
BSEE investigates a small well-gas release during wireline retrieval at Ewing Banks Block 305. Broken wire escaped through the stuffing box, and gas ruptured the grease seal oil reservoir. Findings identify inadequate vent capacity and lubricator check-valve failure. Blow-out preventers and the crown valve secured the well; no injuries or environmental damage occurred.
Classifications: Hydrocarbon release; hydrocarbon leak; oil and gas release.
Classifications: Mechanical failure; equipment failure.
Classifications: Pressure systems; stored pressure; pressurised systems; pressurized systems.
Classifications: Well intervention; workover; well servicing.
Classifications: Storage tanks; atmospheric tanks.
Classifications: Valve; valves.
Classifications: Energy and process isolation; isolation; energy isolation.
Classifications: Pressure relief; overpressure protection.
Classifications: Upstream oil and gas; oil and gas extraction; upstream petroleum.
Classifications: Offshore installation; offshore platform; offshore rig.