A collective view of the U.K. North Sea continental shelf shows some 34 billion barrels of oil equivalent have been produced during the past 40 years, while a potential 25 billion barrels remain, according to Jim Hannon, founding partner of Hannon Westwood LLP, a Glasgow, Scotland-based oil and gas consultancy. To find and produce from those resources will take at least 50 exploration and appraisal wells per year for the next 10 years. For the full version of this story and many others, subscribe to Oil and Gas Investor. Contact us at 713-993-9320.