Equinor’s North Sea assets are being investigated by the Petroleum Safety Authority Norway (PSA) following two major incidents.
The Norwegian firm reported an explosion and a hydrocarbon leak in the North Sea over the last week.
Two workers on board Equinor’s Heimdal platform were injured on Friday when an explosion occurred involving a portable nitrogen gas container.
One worker was left in a serious condition.
70 people were on board the platform when the incident occurred.
Equinor said in Friday it was “too early” to determine the cause of the blast.
The PSA will also investigate a hydrocarbon leak on board Equinor’s Statfjord A facility on November 26.
Equinor said the volume released is estimated at 40-80 cubic metres of oil.
Statfjord is a field in the Tampen area in the northern part of the North Sea, on the border between the Norwegian and UK sectors.
Arne Sigve Nylund, executive vice president for Development and Production Norway, said Equinor had “initiated an internal investigation” and were helping the police and other relevant authorities “carry out their investigations in the best possible way”.