North Sea – The Future: Infographic – offshore exploration drilling decline [related class=”left hidden” count=”0″] Recommended for you North Sea operator Kistos hails ‘strong investment environment in Norway’ By Ryan Crighton 23/04/2014, 7:13 am Offshore drilling work. [related class=”left hidden” count=”0″] Recommended for you North Sea operator Kistos hails ‘strong investment environment in Norway’