The main components of HDD are :
(1) a directional drill rig sized for the job at hand.
(2) drill rods linked together to form a drill string for advancing the drill bit and for pulling back reamers and products.
(3) a transmitter/
(4) a tank for mixing and holding drilling fluid.
(5)a pump for circulating the drilling fluid.
Larger jobs often recycle the drilling fluid using a combination of screens,centrifugal pumps,and hydro cyclones to remove the cuttings from the fluid. GN mud recycling system for HDD is consisted of shale shaker,mud cleaner,decanting centrifuge,centrifugal pumps and tanks etc. GN mud recycling system simplely separate the abandoned soil which is not needed out from liquid/mud base fluid, so not all solids are separated. Bentonite and other drilling fluid additives is solid phase, because of their small size.they could easily pass through the hole of the fine shaker screen, a proper mud recycling used in HDD greatly improved the working efficiency of the drilling rig. For more information about GN mud recycling system. Please feel free to contact with GN Solids Control.