Tricone Tungsten Carbide Drill Introduction

Under the tricone tungsten carbide drill to 3 m from the bottom (the bottom number of visible grit may be), to fully circulating drilling fluid, when about one meter from the bottom into the bottom under rotation. Gently press the bottom of the well to drill when new to LP for some time. Because the bottom of the old with the new drill drill formation often do not match the shape of the bottom surface, a few new drill teeth touch the bottom of the first, the formation of stress concentration, and a big shock loads broken teeth, broken teeth in the mine will damage other teeth , resulting in damage to the drill bit early. Drill at the same time trimming the bottom, bearing also had run together, make a good seal. Gently press LP primarily a running-time on the well used by the drill wear decision, generally not less than 30 minutes.