Hilong Efficient Cuttings Bed Clean Drill Tool
Hilong Efficient Cutting Bed Clean Drill Tool (HLECDT) is designed specifically to improve hole-cleaning performance in horizontal or complex non-conventional wells. It includes the Hilong Efficient Cuttings Bed Clean Drill Pipe (HLECDP) and the Hilong Efficient Cuttings Bed Clean Heavy Weight Drill Pipe (HLECWDP). Sets of spiral grooved structures with a certain depth, long lead and special cross-section shape are added on the external circle of HLECDT or HLECWDP pipe body. During the drilling process of the rotary drilling, it produces the effect of agitation and destruction to cuttings bed. By improving the flow field property of drilling fluid at the borehole bottom area of high angel deviated wells, extended reach wells and horizontal wells, it “throws” the cuttings to high side annulus, and is finally taken away by the drilling fluid, and thereby reduces or clears up the cuttings bed formed by talus deposit.