At 18:00 on February 28, 2019, the Sudong 40-56C4Well, drilled by the Zhongman Rig 15, finished drilling successfully with adrilling depthof 3,214 meters.

The 40-56C4Wellspudded-in at 20:00 on February 16th.Thanks to the excellent organization and coordination of the ZPECSulige Projectand the active cooperation of its Mud Logging,Well Logging, Cementing, and other departments, this well successfully finished with a drilling cycle of 10.91 days (10 days and 22 hours).(Reported by Li Qin)