Terribus states the facts of the case.

Not only were the actions of the Greenpeace activists dangerous but they haven't a hope in hell of discouraging Russia from drilling in their own shallow offshore waters. It will still be many years before petroleum is displaced in the chemical (esp. plastics) and fuel industries.

The Russian steel island is of interest to the oil industry as a whole.
Imperial Oil pioneered in the research and construction of "ice islands" (gravel and ice) for drilling in shallow Arctic waters (Beaufort Sea Canadian offshore) back in the 1960s. Their exploratory wells were drilled successfully. The Beaufort Sea has been leased to a large extent and development is in the near future.

The Russian offshore, on the other side of the Arctic Basin from the Beaufort, is expected to be a large source of gas and petroleum for Russian and European industry.