Peng F. Optimization of Drilling-Fluid Lost-Circulation Control in the Mesozoic Yanchang Formation of Zhengning Oilfield. IJNRES [Internet]. 2026 Apr. 3 [cited 2026 Apr. 8];8(3):72-9. Available from: https://wepub.org/index.php/IJNRES/article/view/6054