The extreme rigors placed on drill stem used in Horizontal Directional Drilling (HDD) and other trenchless construction applications can reap havoc on threads. While the design of the special rotary shouldered connections (RSC’s) employ very course, tapered threads… the dynamic combined loading conditions including torque, bending, and tension & compression push these designs to their limits. In order to meet these demanding performance properties, the threads must be machined to exacting specifications and close tolerances. Gagemaker’s JSS RSC methodology allows the machinist to measure and control each of these critical attributes, so the RSC perform as designed. Reduce common thread failures like thread shear, jump-out, torsional pin failures and box swell that limit performance downhole.
In order to prevent expensive downhole jump-out, twist-offs, and poor performance while drilling…HDD drill stem threads must be periodically inspected in the field to ensure bad connections are spotted and pulled from the string. In addition, every single drill stem section makes-up with the drive chuck or saver sub on the rig. A bad threaded connection on the drive chuck or saver sub can propagate through the entire drill string like a disease, and ruin the threads even after only one make-up. Avoid the cause of expensive operational complications like excavations to retrieve lost tools and down hole bits, reamers and drill stem accessories by monitoring thread wear. Keeping your drill string properly inspected and maintained will reduce fatigue failures and costly operational interruptions.
Gagemaker manufactures gages that can be used in both the construction and utility industries. Not only do our gages inspect tubular goods used in the industry, our gages also inspect parts used in the manufacture of vehicles, equipment, and tools.
For more information on how the gages work, visit the Rotary Shouldered Connections pages or contact us today!