A non-magnetic drill collar is a specialized drill string component designed to provide a low-magnetic environment for accurate directional
surveying in drilling operations.
Non-magnetic drill collars (NMDCs) are used in drilling to shield magnetic survey instruments from interference caused by the steel drill string
or surrounding formations, ensuring precise measurement of the earth’s magnetic field for wellbore trajectory tracking.
Non-magnetic drill collars are essential in magnetic directional drilling, where accurate azimuth and inclination readings are critical.
Non-magnetic drill collar type: slick collars; flex collars; Spiral collars, pony and flex pony collars
