Horizontal Directional Drilling (HDD) is defined as “A steerable system for the installation of pipes, conduits, and cables in a shallow arc using a surfaced launched drilling rig. Traditionally, HDD is applied to large scale crossings such as rivers in which a fluid filled pilot hole is drilled without rotating the drill string, and this is then enlarged. This technology has been in existence since the 1970’s. It is currently an efficient, safe, cost effective method for highway bores and is the current industry standard for trenchless technology for bores between 2inch to 36inch diameters and in lengths from just a short road or highway crossing to over 1000-plus feet.
J.S. Rae has three directional drills suited for small service lines, up to larger diameter made pipelines.