Non magnetic drill collar with wear -resisting area

The utility model relates to a non magnetic drill collar with wear -resisting area, including the non magnetic drill collar body, the drill collar body is made by full austenite stainless steel, and the one end of non magnetic drill collar body is equipped with the interior screwed joint who is connected with the drilling rod, and the other end is equipped with the outer screwed joint who is connected with the drill bit, and the outer periphery of following the non magnetic drill collar body surrounds and is provided with two rings of wear -resisting areas, and the middle part position of drill collar body is equipped with the seal of a government organization in old china groove that is used for printing model. The non magnetic drill collar at first contacts the wall of a well in the use, and the non magnetic drill collar body reduces or the contactless with wall of a well contact force, has effectively reduced the rate of wear of non magnetic drill collar, after being worn and torn in the use gradually in wear -resisting area, still can adopt and spout welding method and respray again and weld the wear -resisting area of one deck to continue to protect the non magnetic drill collar lastingly, greatly improved the life of non magnetic drill collar, but wide application in non magnetic drill collar field.