NYJ developed Non-magnetic downhole motor for coal industry

The non-magnetic screw motor is a downhole motor developed to meet the needs of gas drainage and hydrological exploration in the coal industry. Traditional ordinary screw motor cannot strictly control the trajectory of the drill bit due to its relatively long distance from the bit, resulting in a certain degree of lag. Therefore, if a non-magnetic screw motor auger-like orientation device is designed, directional drilling will become easier. As it is deep drilling underground, it often encounters harder rocks, and at this time, the drilling torque of the screw motor must be large enough to meet the requirements. Additionally, due to the harsh drilling environment, the stability of the screw motor is also important to avoid affecting underground operations.