Horizontal directional drilling is the in-word in trenchless technology for installations below the ground for installing cables, ducts, pipes etc. Due to its ease of maneuverability the technology is considered best for working in city conditions minimizing utility damages.

Pilot Hole:
The Pilot string is inserted in the ground at a required Entry Angle to achieve the pre-determined profile. On the head of the string is mounted a pilot head over which are mounted water jets. The water jets pumps drilling fluid into the ground with high pressure, which provides a loose soil path for the movement of the string.

The drilling fluid comprises of Water, Bentonite and polymers which helps to form a impermeable layer in the ground stabilizing the hole and maintaining a near no percolation of ground water into the hole.

A Sonde transmitter and a receiver achieve the maneuverability and control of angle and depth of the drill string. The Sonde is installed inside the pilot head and the signals transmitted are received by the receiver walkover system, which guides the pilot along the pre-determined path.

Back Reaming & Pulling:
Once the pilot hole is completed the hole is enlarged with the help of different size of reamers depending on the size of product to be pulled. As a Rule of Thumb the bore size is almost 1.5 times the size of the product to be pulled.

Type of Installations:
Pipe Type: Steel, HDPE, Power Cables, Copper Cables etc.
Diameter Range: From 2 inch to 18 inch for both Steel and HDPE
Length: Upto 300 meters for HDPE (depending on the Diameter)
             Upto 200 meters for Steel (depending on the Diameter)