What Size HDD Rig?
The physical size of the equipment and the scope of horizontal directional drilling (HDD) projects may vary significantly. Small HDD projects and operations differ substantially from larger operations, while the general practices are similar.
The capab ility of a rig to perform a given installation is a function of the ground conditions, experience of the crew and the resources (i.e. support equipment, supplies, downhole tooling) available. Subsurface conditions strongly influence the selection of downhole tools, drilling fluid additives, drilling techniques and schedule.
Thi s article is provided through the courtesy of the HDD Consortium. It is excerpted from the Consortium's "HDD Good Installation Guidelines." The guidelines are available in print form or on CD-Rom from the Consortium members: Directional Crossing Contract ors Association (972-386-9545), Distribution Contractors Association (972-680-0261), Equipment Manufacturers Institute (312-321-1470), National Utility Contractors Association (703-358-9300), North American Society for Trenchless Technology (703-351-5252), and Power & Communications Contractors Association (703-212-7734).