Investigation Report
Workstring Ejection During Tubing Cutting
08-01-2012 00:20 G09529 VR/398 Structural Damage/Required Muster
- BSEE
- Investigation Report
- Unknown
- CorrosionPressure systemsWell control
- Pressure testingWell intervention
- Blowout preventerWellhead
- Well-barrier testing
- Upstream oil and gas
Summary
Investigation of a workstring ejection during tubing cutting at VR 398 Well A002. Sand and wireline debris obstructed the DX plug’s equalising ports, while a leaking overshot packoff gave a false indication of pressure equalisation. Blowout preventer closure controlled the well; the report records equipment damage and recommends a safety alert.
Classifications: Corrosion; corrosion damage.
Classifications: Pressure systems; stored pressure; pressurised systems; pressurized systems.
Classifications: Well control; kick control; loss of well control.
Classifications: Pressure testing; hydrostatic testing; pneumatic testing.
Classifications: Well intervention; workover; well servicing.
Classifications: Blowout preventer; BOP; blow-out preventer.
Classifications: Wellhead; well head.
Classifications: Well-barrier testing; well barrier verification.
Classifications: Upstream oil and gas; oil and gas extraction; upstream petroleum.