Bui Viet Duc, Ngo Van Tu, Bui Trong Khai, Dang Cua, Bui Viet Phuong, Vu Van Hung, Hoang Hong Linh, Bui Van Thom, Nguyen Xuan Thao. Research and field-trial of “KCl-Protex Sta” drilling mud system and using Protex Sta in combination with CFL-AKK-KCl-PAG, KGAC drilling mud systems to improve well drilling efficiency . PVJ [Internet]. 2019Apr.29 [cited 2026Apr.18];40:23-9. Available from: https://tapchidaukhi.vn/index.php/TCDK/article/view/251