![]() ![]() For more information on the process, watch this directional drilling animation. This final step in the Horizontal Directional Drilling Process includes pressure testing to ensure the integrity of the pipe. We offer a range of size and power options. ![]() After the pipe installation, the directional drill rig is used to pull the product into position within the pipe. Install underground fiber, electrical, gas and water lines with a Vermeer horizontal directional drill (HDD). 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. It can be broken down into four main groups: oilfield directional drilling, utility installation directional drilling (horizontal directional drilling), directional boring, and surface in seam (SIS), which horizontally intersects a vertical well target to extract coal bed methane. Stage 4 of the Horizontal Directional Drilling Process – 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. Stage 3 of the horizontal directional drilling process is p ullback. ![]()
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