The radar head at Ekofisk has been cancelled because an agreement could not be reached with ConocoPhillips about the placement.
Sad really.
Heidrun radar is going live with a Class D CTA soon, and they are working with ICAO to get Statfjord CTA moved from Class E to D.
Ekofisk has been put on the back burner, waiting to get ADS-B coverage in the future. Multilateration not possible because the platforms are placed more or less on a line, so accuracy would be poor.