Links to analyses of selected well incidents:
Shell / Draugen A 5 (Conductor weakened by corrosion)
Statoil / Snorre P2 (Collapsed casing due to lack of pressure/temperature control in the annulus)
In addition, an audit has been conducted of the planning of the Ormen Lange wells, which is also enclosed to further this sharing of experience.
Norsk Hydro and Shell / Ormen Lange (Challenges associated with lower completion)
The Petroleum Safety Authority Norway has conducted its own investigations of selected well incidents. These have been included in this overview to supplement the overall picture of the causes of well incidents: