Repsol Sinopec Resources UK said that first gas has been delivered on schedule from the Cayley field, the third and final discovery to be brought on-stream during the major Montrose Area Redevelopment (MAR) project in the United Kingdom Central North Sea. Gross incremental production from Cayley and the Godwin and Shaw fields, previously started up, is estimated to peak at 40,000 BOE/D. The new production is expected to extend the life of the Montrose facilities, which were installed in 1976, to beyond 2030. Repsol Sinopec is the MAR project operator with a 58.97% interest. Marubeni Oil & Gas holds the remaining stake. Repsol Sinopec is a joint venture of Repsol and Addax Petroleum UK, a subsidiary of Sinopec.