Equinor ordered to address well control measures following North Sea Troll incident
What happened
Havtil published findings after a well‑control incident on the Deepsea Bollsta during casing cutting in a P&A operation, identifying multiple barrier, planning and qualification failures. The report records a gas release and lists non‑conformities that make regulator‑grade verification and method qualification operational necessities for future P&A work; watch for RFQs and contracts to incorporate these requirements
Buyer takeaway
Treat the Havtil order as a practical procurement constraint: require documented barrier design verification and method qualification evidence before awarding P&A or intervention work
Cost / money
Expect higher procurement and QA costs for tenders that must include third‑party verification, additional testing or corrective works
Supplier / commercial
Suppliers will need to show qualification records and may seek changes to payment or acceptance terms if extra testing is required
Safety / operations
Addressing the root causes reduces HSE and ignition risk during P&A by ensuring barriers and methods are proven before work starts
What to watch
Watch incoming RFQs and contract drafts for clauses referencing regulator findings and for supplier pushback on added acceptance/testing requirements
Key facts
- Investigation identified a set of barrier and planning non‑conformities
- Event occurred during casing cutting in a P&A operation
- Report ties failures to unqualified methods and planning gaps
Source excerpts
Root causes and barrier failures Its team identified various underlying causes: A lack of barriers with regard to the reservoir; Use of technology and methods not qualified for the purpose; and Deficiencies in planning, risk assessment and communication
The Norwegian Ocean Industry Authority (Havtil) has issued the main findings of its investigation of a well control incident last September in the Q-21 well on the Equinor-operated Troll Field in the North Sea
Well control incident on Deepsea Bollsta Operations took place from Odfjell Drilling’s Deepsea Bollsta semisubmersible rig. The incident arose during cutting of the 13 ⅜-inch casing in connection with the permanent P&A of the well
