Well integrity

1980s: Giant without compare
Published:
Several of the largest field developments on the NCS saw the light of day in the 1980s. The biggest of them all was the veritable troll, which became famed far beyond the country’s borders.
  • Reportage
  • Well integrity
  • Structural safety
Order to Equinor – technology development - use of digital well planning, automated drilling and digital twins
Published:
The Norwegian Ocean Industry Authority (Havtil) has issued a new order to Equinor following an audit of technology development and the use of digital well planning, automated drilling and digital twins at Askepott on the Oseberg field.
  • News
  • Well integrity
Animation: Temporary plugging and abandoned wells
Published:
More than 2 200 oil and gas wells are to be found on the Norwegian continental shelf. In 2024, more than 20% of these wells were temporary plugged and abandoned wells. Downhole barriers in temporary plugged and abandoned wells are not qualified to last for ever. That makes it important to follow up and ensure they are not abandoned beyond the lifespan of the barriers which secure them.
  • Video
  • Video
  • Well integrity
Creeping shale for use in permanent well plugging
Published:
Havtil has undertaken knowledge gathering on how creeping shale can be qualified and used as a well barrier element for permanent well plugging.
  • Project report
  • Well integrity
Cemented shoe track as a well barrier
Published:
Multiple incidents have revealed weaknesses in using cemented shoe track as a well barrier. New report compiles industry experiences and proposes measures for improved verification and safer practices.
  • Project report
  • Well integrity
Havtil investigates incident on Deepsea Bollsta
Published:
The Norwegian Ocean Industry Authority (Havtil) has initiated an investigation into a serious incident on the Deepsea Bollsta mobile facility on 23 September 2025.
  • News
  • Well integrity
Plugging and abandonment under the spotlight
Published:
Permanent plugging and abandonment of wells will become an important part of the activities taking place on the Norwegian continental shelf over the coming years. Sharing collective learning and experience-based knowledge will boost the chances of success in this area.
  • News
  • Well integrity
Foam cement as a barrier element on the Norwegian continental shelf
Published:
A new report evaluates the properties and effectiveness of foam cement in the petroleum industry.
  • Project report
  • Well integrity
  • Barrier management
Challenges and opportunities for shallow hazard risk reduction
Published:
On behalf of The Norwegian Ocean Industry Authority (Havtil), Geoprovider has conducted a study that examines factors contributing to clarifying and reducing the risk of shallow well control incidents.
  • Project report
  • Well integrity
Handling CO₂ blowouts
Published:
A new report maps well control risks associated with drilling CO₂ injection wells and potential blowouts
  • Project report
  • Well integrity
Animation: Permanent plugging and abandonment of wells
Published:
Approximately 2200 oil and gas wells on the Norwegian continental shelf fall within the Norwegian Ocean Industry Authoritys’s area of responsibility. All present and future wells will sooner or later be plugged and abandoned with an eternal perspective. The updated animation show the principles for permanent plugging and abandonment and visualize how well barriers are established. Our goal is that all wells will be permanent plugged and abandoned in a robust and efficient manner for perpentuity.
  • Video
  • Well integrity
  • Video