BH-VDT Vertical Drilling System

• ◆Max. horizontal displacement to vertical depth ratio(Well 8Nm-H3 ): 3.92
• ◆Max. horizontal displacement(NP13-1706):16,206 ft
• ◆Shortest drilling period of 4000m extendedreach well(ZH 8Es-L1) : 17.21 days

Completed 537 ERD wells (VS > 5000 ft)