Using this method, the surface of landscape remains intact, including beautification features, roadway, building and constructions. Directional and horizontal drilling have been used to reach targets beneath adjacent lands, reduce the footprint of gas field development, increase the length of the "pay zone" in a well, deliberately intersect fractures, construct relief wells, and install utility service beneath lands where excavation is impossible or extremely expensive. Horizontal directional drill rigs are developing towards large-scale, micro-miniaturization, mechanical automation, hard stratum working, exceeding length and depth oriented monitored drilling. Measuring the inclination of a wellbore (its deviation from the vertical) is comparatively simple, requiring only a pendulum. Sometimes horizontal directional drilling is the only possible way to tap a reservoir, such as the case of dilling under a town or nature reserve.
Our company has been involved in the trenchless sector for over 35 years, working in a wide variety of locations and soil types. Horizontal directional drilling (HDD) consists of several installation steps. First, a pilot bore is made with a suitably sized drilling rig.