Spiral drill collar is our oil drilling in one product line, such drill collars to prevent Intelligent/automatic drilling operation robot drilling in the drilling process differential pressure block, helical groove allows the mud flow freely around the drill collar to balance the pressure to prevent forming a block, while Sucker rod pump unit controller effectively preventing differential sticking occurred. It can reduce the contact area with the drilling shaft, thus blocking the possibility of differential pressure can be effectively reduced. The reason why the spiral drill collars are widely used because of its own characteristics Casing and tubing collar Gas tight connection of the decision, this particular spiral drill collars to reduce the contact area between the wall and the tube, thereby avoiding "sticking" phenomenon of the drill string.