Hoang Thanh Tung, Nguyen Pham Huy Cuong, Tran Hong Nam, Le Quang Duyen and Dao Thi Uyen (2019) “Optimised under-reamer string design for the wells in Hai Thach field, Nam Con Son basin”, Petrovietnam Journal, 10, pp. 50-57. Available at: https://www.pvj.com.vn/index.php/TCDK/article/view/212 (Accessed: 31January2026).