In diamond drilling operations, the drillstring is rotated at extremely high rotational speeds and the consequences of a drill rod failure can be catastrophic particularly if the drill rod that fails is a quillrod.
Read this article to gain an understanding of the modes of failure of drill rods.
Read MoreThe quillrod is an irreplaceable part of a drilling operation, therefore a thorough understanding of the causes of quillrod failure is essential in preventing these incidents.
Read MorePro-active detection of potential drill rod failure should be a key element of day-to-day drill site safety management, however, quillrod management is complicated by the different procedures used by different contractors.
Read MoreDrill rods and drill pipe are an extremely expensive part of the drilling operation and so correct break in and maintenance procedures are essential for long life.
Read MoreWhat is the link between yield strength and depth rating? Find out more about this interesting relationship here.
Read MoreFor a thread to fail, it is necessary that the flanks of the threads are deformed to such an extent that the box and pin are able to move apart.
Read MoreThe first wireline drill rod thread was developed in the 1950's. Find out what has changed since then and what these developments mean for your drilling operation.
Read MoreBrowse our series of technical articles on drill rods, which cover the manufacturing, depth limitations, threads, and reasons for failure of drill rods.
Read MoreWhat forces and stresses are exerted on drill rods? Here's an explanation of the mechanical concepts.
Read MoreThe tubular steel used to manufacture drill rods must meet strict manufacturing standards and have specific mechanical properties.
Read MoreHow are drill rods and drillpipe manufactured, and which grades of steel are used?
Read MoreA demonstration of the cold drawing procedure for manufacturing steel tubing.
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