Oil & Gas First gas from Devenick announced First gas had started on a new North Sea development which will boost UK production by 3%, it was announced today. By Elaine Maslin 04/10/2012, 1:24 pm First gas had started on a new North Sea development which will boost UK production by 3%, it was announced today. First gas had started on a new North Sea development which will boost UK production by 3%, it was announced today. Recommended for you Rosebank axing would cost jobs and money, court hears