Peng F. Optimization of Drilling-Fluid Lost-Circulation Control in the Mesozoic Yanchang Formation of Zhengning Oilfield. IJNRES [Internet]. 2026 Apr. 3 [cited 2026 Jun. 10];8(3):78-85. Available from: https://wepub.org/index.php/IJNRES/article/view/6054