Directional drilling1/1/2024 The drill team can then weld it to the pipe segments on either side. When the pipe is in place, it undergoes testing. The contractor may ream the hole several times depending on the final diameter that the project needs.įinally, the drill team pulls the pipeline into the reamed hole using the drill rig. A reaming tool expands the hole to a diameter that the pipeline will fit through. This helps keep the drill on the right path and avoid obstacles.Īfter the pilot hole is finished, the drill team enlarges it in a process called reaming. Horizontal Directional Drilling Guidelines HandbookĪn HDD locator system lets the contractors track the progress of the drill bit. It also carries cuttings from the hole back to the surface. They use a drill bit and pipe assembly to drill a small-diameter hole.ĭrilling fluid helps the drill bit cut through the soil and rock. First, the directional driller drills a pilot hole. The horizontal directional drilling process has three basic stages: pilot drilling, expanding the drilling hole, and pulling the production pipe. How Does Horizontal Directional Drilling Work? If you are unfamiliar with some drilling terms or expressions, be sure to check out our Directional Drilling Glossary and Terminology. You'll be ready to tackle your next drilling project. Operators use a surface-launched drilling rig to drill a horizontal hole beneath obstacles on the surface.įind out how HDD works and its advantages over other forms of horizontal drilling. Horizontal directional drilling (HDD) is a steerable trenchless drilling method. Horizontal directional drilling could be the answer. Do you need to install a pipeline under a roadway, railroad, or river? In an urban or residential area? In an area with many other utilities already underground?
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