New PDC bit design eliminates gage pads

摘要

SideWinder design can be incorporated into any standard profile PDC bit. The new SideWinder polycrystalline diamond compact (PDC) bit is designed for directional performance, proven on both steerable motors and rotary steerable applications. The design of the SideWinder eliminates the gage pads in favor of making the cutting structure as active in the lateral aspect as it is in the vertical. The cutting structure blends smoothly and uninterrupted into the, flank of the bit and upwards into the relief back to the shank. This upwards component allows the SideWinder to be pulled while rotating through tight curves, similar to a key seat mill, and to ream the upper side of the curve to enlarge the radius as much as possible for casing clearance. The SideWinder gets its name from its ability to drill sideways or laterally. The SideWinder drills laterally for rotary steerable systems, especially push-the-bit tool. For steerable motors, this gives it the ability to make rapid course corrections in a very short slide.