The Working Principle of HDD Mud Recycling System

Mar 11, 2026

The core principle of the HDD mud recycling system is to combine solid control with mud mixing to realize the cyclic reuse of mud, which not only reduces construction costs but also meets environmental protection requirements. The working process of the HDD mud recycling system is clear and efficient: firstly, purify the mud returned from horizontal directional drilling, separate large-particle drill cuttings through equipment such as shaker screens and desanding cyclones; then add mud materials through the mud mixing device and stir them evenly to make the mud meet the reuse standard; finally, pump the mud back to the directional drilling system through the mud pump to complete the cyclic reuse. The core is to realize the closed-loop operation of solid-liquid separation and mud regeneration
 
The differences among the four core models of KOSUN Machinery are mainly to adapt to different working conditions: the KSMR-200 model (≤200GPM) adopts the LS2•752 double-layer linear shaker screen, with an integrated design and small volume, suitable for small processing capacity scenarios; the KSMR-350 model (≤350GPM) is equipped with the LS608 double-layer screen shaker, which can realize two-stage screening with one machine, balancing convenience and processing efficiency; the KSMR-500 model (≤500GPM) adopts a three-stage purification process and is equipped with an underflow screen to deepen solid-phase treatment, suitable for medium and large-scale mud volume construction; the KSMR-1000 model (≤1000GPM) is equipped with two shaker screens and multiple sets of cyclones, with three-stage purification, suitable for construction with extremely large mud volume.

 
The HDD mud recycling system is widely used in non-excavation horizontal directional drilling projects, including urban underground pipeline laying, oil and gas pipeline crossing and other scenarios, and is also suitable for coalbed methane extraction construction. Corresponding models can be selected according to different construction scales, site space and mud processing capacity to achieve efficient purification and cyclic reuse, which not only improves drilling speed but also practices the concept of green construction, adapting to various complex construction environments.