#Underground directional drilling install#

This final step in the Horizontal Directional Drilling Process includes pressure testing to ensure the integrity of the pipe. After the pipe installation, the directional drill rig is used to pull the product into position within the pipe. If the horizontally bored conduit is to carry power lines, fiber optic cable, or some other product, an aircraft cable is inserted into the pipe prior to pulling into position. Stage 4 of the Horizontal Directional Drilling Process вЂ“ Installation of Conduits The pullback continues until the reamer exits the bore path by the directional drill rig and the pipeline is in place. The directional drilling rig then begins the pullback operation, rotating and pulling on the drill string as well as circulating drilling fluids. The swivel allows for the reamer to turn without the product turning. A reamer is attached to the drill string, and then connected to the product by a pulling head and swivel. The pipeline is prefabricated at the end of the bore opposite the drill rig. Once the directionally drilled hole is enlarged, the conduit can be pulled through it. Call us today to bring that level of experience to your next trenchless conduit installation.Stage 3 of the horizontal directional drilling process is p ullback. To find out more about Directional Technologies as a company, and how we can help you, visit About Us.Дirectional Technologies has installed miles and miles of conduit using directional drilling over the past quarter-century. This method of installing conduits has many benefits that include less disruption of commercial activities, less disruption of traffic, less site rehabilitation, and directional drilling can also be used to avoid damage to wetlands, streams, and for river crossings.

After the bore path is enlarged, the conduit is simply pulled into place by the directional drill rig. As depicted in this video, and as most directional drilling projects, very little of the normal city activities were interrupted during the conduit installation. The reamer is simply pulled through the existing bore path to enlarge the hole. In this installation, the bore path must be enlarged to accommodate the conduit and a reamer is attached to cut a larger diameter hole. Horizontal Directional Drilling is a guided trenchless method in which a pilot borehole is drilled along a predetermined bore path, subsequent hole. The bore path is typically enlarged to one and a half size the conduit that is being installed. The Pilot Bore, Reamer, & ConduitДЄ typical midsize directional drill uses a 4-inch drill bit to drill a pilot bore. The drilling crew always can determine the exact depth and location of the drill bit. An experienced directional drilling crew can navigate and steer the drill bit up, down, right, left, and a combination of varying degrees of each to drill the desired horizontal bore path. The locator then gathers and interprets the information and then gives directions to the directional drill operator on which way to steer the drill bit. The directional drill bit is tracked by a sonde, or radio detection device, housed within its extended connection to the directional drill pipe, the depth and pitch is sent to the surface and received by the walkover locating device. The directional drilling crew are in radio communication with each other throughout the entire process. The entrance pit is used to contain and manage the drilling fluids. The horizontal bore begins with the directional drill bit entering the entrance pit. Before the drilling begins, the crew pre-plans the bore path to carefully avoid obstructions such as other underground utilities.

This area can be strategically placed away from congestion and business activities. A small area is needed to set up the equipment. As demonstrated in this video, conduits such as water, sewer, fiber, electric, and gas can be installed under very busy intersections without disruption of traffic.

#Underground directional drilling install#

Directional drilling is used to install conduits under obstacles such as roads, buildings, and wetlands.