03/06/2026
Drill Stem Inspection: More Than Standard NDT
While NDT methods cover the theory, methodologies, and inspection processes for castings, forgings, and welds, Drill Stem Components require consideration of additional factors such as handling, storage, environmental exposure, chemical attack, torsion, tension, and impact loading.
A drill string comprises various tools—both single-piece and multi-segment assemblies—often requiring compliance with multiple standards simultaneously, including industry, manufacturer, vendor, and end-user requirements. Ensuring compliance begins with a clear understanding between all parties involved in the inspection contract.
Inspection providers must possess the competence, training, and qualifications necessary to determine what, where, when, and how inspections are performed, meeting or exceeding standard NDT practices specific to drill stem components.
The ability to identify discontinuities, defects, and their root causes is essential, providing valuable insight to prevent recurring failures and improve operational reliability.
Strong communication between all stakeholders remains key to reducing Non-Productive Time (NPT) and maintaining drill string integrity.