Non Magnetic Downhole Motor For Tunnel Drilling

Non-magnetic downhole motor is a kind of specially small size downhole motor. The cross-over sub, power section, some with non-magnetic material, can be directly installed in the directional sub joint top of the measuring point and shorten the distance between the bit, accuracy higher solve the generated magnetic of common downhole motor on the instrument interference. They can meet operational requirements of the geological conditions and engineering safety.

Now, particularly along the seam is drilling the application of directional drilling technology, drill pipe and drill bit alone is not enough, but also for different requirements, using special drilling tools. For example, to control the drilling direction, to be used in oil downhole motors, but need more accurate tunnel drilling required point of measurement instruments and the drill bit closer, and asked of a smaller influence by instrument . According to the above requirements, the small downhole motor into the top half of the design using non-magnetic material, so the total length of the small downhole motor shorter, Stronger anti-interference.