horizontal directional drilling contractors

HORIZONTAL DIRECTIONAL DRILLING CONTRACTORS INSTALL

We anticipate a significant increase in urban community application where stakeholders need to cross obstacles and wish to reduce the impacts of construction on their communities. Vos: We see the HDD industry continuing to develop and expand. Where do you see the HDD market heading in the next five to 10 years (new markets, existing gaps in HDD capabilities)?

Usually, a “drilling mud” such as fluid bentonite clay is injected into the bore while cutting and reaming to stabilize the hole and remove soil cuttings.Įrez Allouche, Ph.D., P.Eng., Practice Technology Leader,Ĭarrie Murray, M.Eng., P.Eng., Principal Geotechnical Engineer, Stantec.ġ. Several reaming passes may be needed for large-diameter pipes which require large boreholes that cannot be created in a single pass.

The reaming operation usually consists of using an appropriate tool to open the pilot hole to a slightly larger diameter than the carrier pipe. The pipe is usually pulled through from the side of the crossing opposite the drill rig. The reamer bores out the pilot hole so that the pipe can be pulled through. When the bore head and rod emerge on the opposite side of the crossing, usually a special cutter, called a back reamer, is attached and pulled back through the pilot hole. Through small adjustments made by the operator, the drill head can go around trees, under foundations, buried utilities, lakes, or other obstructions. The position of the drill head can be accurately controlled with devices and sensors that monitor and track the drill head. The process typically begins with boring a small pilot hole along the desired centerline of a proposed profile under the crossing obstacle (e.g., a highway) with a continuous string of steel drill rod.

HDD method is about making a horizontal borehole from one location to another. Most of you know about HDD, but for those of us who are new to it, here is the quick introduction to HDD before the Q&A with the experts:

HORIZONTAL DIRECTIONAL DRILLING CONTRACTORS INSTALL

I believe horizontal directional drilling (HDD) is one of the most interesting technologies that lets us install pipelines, sewer, water mains, power and telecom where conventional open-cut techniques are not feasible. In addition, the DCA offers an international forum that facilitates a constant exchange of experience between HDD contractors, suppliers, planners, customers and authorities.In the civil engineering world, finding safer and faster methods to complete projects with minimum impact on the environment and public is the focus for most owners, designers and contractors. The association offers its members numerous important services, training opportunities and information. Pipeline infrastructure structures are the lifelines of modern society and it is no longer possible to imagine the construction of this infrastructure without trenchless construction methods, in particular horizontal directional drilling.įor more than 25 years, the DCA has successfully represented the interests of HDD technology in the areas of technical development, quality assurance, training and further education, and research and development vis-à-vis clients, authorities and other institutions. The horizontal directional drilling method with the international designation Horizontal Directional Drilling (HDD) has meanwhile established itself worldwide as a technical and economic alternative for the underlaying of obstacles in the field of pipeline laying. The Drilling Contractors Association (DCA) is a technical association of the horizontal directional drilling industry in Europe.

Horizontal directional drilling contractors