In order to exclude the violation of the technology, it is necessary to connect all parts of the pipes with each other reliably. It is important to consider the possibility of soil caving. The drilling mud must have sufficient gel strength to keep cuttings suspended for transport, to form a filter cake on the borehole wall that contains the water within the drilling fluid, and to provide lubrication between the pipe and the borehole on pullback. It is necessary to use a drilling mud during whole drilling process. Directional drilling (or slant drilling) is the practice of drilling non-vertical wells. Full extension of the reamer through the formed channel with constant correction of movement.Expansion of the pilot hole: the drill bit is removed and replaced by an appropriate reamer YG HDD Horizontal Directional Drilling Machine Working Crawler-Type HDD Horizontal Directional Drilling Rig Crawler-type horizontal directional drilling rigs can show their talents when the construction site is located in difficult terrain that cannot be accessed by trucks or cranes.Pilot boring path is checking every 3 meters’ length. Placement of Polyethylene Pipe or Conduit Under Obstacles, Including River.
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