Hilong Holding Limited (Hilong) has announced that its indirect wholly owned unit, Hilong Petroleum Pipe Company LLC, has secured a drill-string supply contract worth approximately US$44.00 million with ADNOC Drilling Company PJSC.

The agreement covers the provision of drill strings for 19 onshore and offshore rigs, including operations on Upper Zakum Artificial Island—one of the world’s most technically complex extended-reach drilling (ERD) projects. The scope also features deployment of what Hilong describes as the world’s largest IoT-enabled drill string, aimed at enhancing real-time asset management and operational efficiency and potentially facilitating future artificial-intelligence applications.

Hilong’s board views the mandate as evidence of strategic-client confidence in the group’s drill-string design and manufacturing capabilities and as a step toward expanding its market presence in the Middle East.

ADNOC Drilling, a subsidiary of Abu Dhabi National Oil Company, is an independent third party to Hilong. The voluntary announcement was released in Hong Kong on 18 June 2026.