Field_DevelopmentCNOOC Ltd starts production drilling at Bozhong gas playPilot development scheme calls for seven production wells at wellhead platform BZ 19-6 WHPA, with first gas pegged in the third quarterReady to spud: drilling crew post for picture on rig Hai Yang Shi You 941 before debut drilling started at Bozhong 19-6 gas play off northern China last weekPhoto: CNOOC LTDXu YiheSingapore