The International Society for Trenchless Technology

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Intersect Method

Horizontial directional drilling method that allows accurate installation over longer distances than can be achieved by conventional means. The Intersect method employs two rigs starting from opposite ends of the project to create pilot bores using conventional drilling tools. A magnetic source is substituted for the conventional steering tool in one of the rigs, which allows the other rig to accurately measure its position relative to the electromagnetic signal. The rig with the magnetic source tool advances toward the other rig until it intersects the bore and continues through the bore to the other side as the conventional tooling is retracted.

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