Several Commonly Used Horizontal Directional Drilling Steering Tool

The first: dental plate drill. There are different designs for different formations. Usually used for soft to medium hardness and hardness more uniform clay or loose sand.
The second: shake roof drill bit. Shake roof drill bit is suitable for hard formations and soft rock that propulsive force can not penetrate.
The third: Whipstocking short BHA, this BHA generally used for large directional drilling through soft formations.
The fourth:Mud Motor BHA, mud motor is whipstocking tool, also is got into power tools, mainly applied to hard formations, rock formations.
The fifth: rock drill guide system. The rig has two sets of top drive apparatus, special drive drill system, BHA is very similar to mud motor, but without the drive section of the mud motor.

The sixth: Horizontal directional drilling motor DTH drilling assembly. This drill powered by compressed air, for small rigs short-range, medium-to-high hardness through rock formations, efficiency and higher compared to other tools guide.