To drilling measurement while drilling equipment, under no magnetic pipe introduction

Non-magnetic drill pipe is directional drilling MWD of form a complete set of equipment, has the excellency of reducing the external disturbance to the MWD device, signal transmission, motor power medium in the bottom of the feed holes and drill the effect such as power transmission, is an important part of the coal mine of directional drilling tools, with low permeability, high tensile strength and torsion performance good features, The magnetic field at the probe pipe is almost equal to the geomagnetic field nearby, so the geomagnetic direction of the borehole can be accurately resolved to ensure the measurement accuracy of the measuring system