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Directional drilling operations involve complex mechanical and hydraulic interactions that often lead to inefficient weight transfer, excessive torque and drag, vibration-induced dysfunctions, and inadequate hole cleaning, thereby reducing drilling efficiency and increasing operational costs. Polycrystalline diamond compact (PDC) bits with optimized tungsten-carbide cutter geometry provide an effective solution for improving drilling performance in high-angle and extended-reach wells. This study investigates the i...