[en] In this presentation it is suggested that the greatest challenge in building the Norwegian oil industry may have been a climate of chronic price swings. The introduction of NORSOK by Norway and CRINE by the U.K. signalled that the North Sea countries intended to remain competitive in the world petroleum scene. The presentation focuses on the environmental challenges that lie ahead and the importance of maintaining a vigorous industry. The need for research is emphasized, especially on the effects of greenhouse gases and on cleaner fuels