Tri-cone drill bits with metal-sealed bearing structure are broadly used in very tough or complicated formations. Compared with rubber-sealed structure, a metal-sealed tricone bit bears heavier W.O.B. and survives longer in different conditions. On the other hand, better performance means higher price. Metal-sealed tri-cone drill bits are generally 30% more expensive than rubber-sealed ones. This […]

Power or motor section A drilling mud motor has three main parts: the housing, a steel stator, and an elastomeric rotator. Essentially, it operates as a reverse Moineau pump. Drilling fluid is pumped into the motor’s progressive cavities. As the fluid moves, it forces the shaft to rotate inside the stator. In short, the power

1. Roller-bearing systems VS Journal-bearing systems Roller-bearing systems Roller bearings are widely used in bit-bearing systems. They handle heavy loads effectively and perform well in drilling conditions (Figure. 1). These bearings are commonly found in larger-diameter bits (> 14 in.), as they require more space for the rollers. To improve durability, manufacturers focus on advancing

Foreword Understanding IADC codes makes choosing the right drill bit much simpler. Whether you’re picking a Tricone or a PDC bit, paying attention to the small details is key. Make smart choices to keep your drilling operations running smoothly and achieve success with precision. This guide includes diagrams, charts, and real-world examples to help you