Xingtong Drill Bit 8 1/2 XD S 6166 BD(24004)

The XD series drill bits are directional drilling tools designed to meet the demands of various directional well types, including coalbed methane drainage directional wells and oil horizontal wells. Incorporating the latest drill-bit design concepts and undergoing specialized optimization in both structure and materials, the XD series delivers highly efficient rock-breaking performance even under complex wellbore trajectory conditions.

1. Suitable for use with a rotary steerable system to increase the build rate, or with a screw motor to enhance directional drilling efficiency.  
2. Ultra-short body design reduces the effective make-up length by 40% compared with conventional drill bits, significantly enhancing deviation-control capability.  
3. The unique detent-tooth design ensures excellent tool-face stability even under enhanced weight-on-bit during directional sliding.  
4. The maximum build rate when used with a bent sub is ≥30°/30 m, and the maximum build rate when used with a rotary steerable system is ≥15°/30 m.

The XD directional series is designed for critical drilling sections such as the build-up and horizontal sections of directional wells and can be used in conjunction with downhole screw motors and other directional tools. In applications such as coal mine gas drainage boreholes and highly challenging, long-reach wells, this drill bit series has consistently delivered outstanding performance, achieving single-trip penetration and rapid rate-of-penetration.