Overview
ISO 10424-1:2004 - "Petroleum and natural gas industries - Rotary drilling equipment - Part 1: Rotary drill stem elements" defines design, material and testing requirements for key rotary drill stem components used in onshore and offshore drilling. First published in 2004, the standard covers upper and lower kelly valves, square and hexagonal kellys, drill-stem subs, standard steel and non-magnetic drill collars, and drilling and coring bits. It ensures interchangeability, performance and traceable quality across manufacturers and rigs. Note: ISO 10424-1:2004 is not applicable to drill pipe and tool joints, rotary-shouldered connection designs, thread gauging practice, or master gauges.
Key topics and technical requirements
- Design and mechanical properties: Specifies minimum material properties, dimensional requirements, and mechanical performance for drill stem elements to ensure reliable service in rotary drilling operations.
- Testing and inspection: Requires hydrostatic testing, mechanical tests (tensile, hardness, impact), and non-destructive examination (NDE) methods (penetrant, magnetic particle, ultrasonic) with certified personnel per ISO 9712.
- Connections and dimensions: Defines sizes, connection types and gauging practices for kellys, subs and collars to support interchangeability.
- Special components: Includes requirements for non-magnetic drill collars and various drilling and coring bits (roller, blade drag, diamond and PDC types).
- Documentation, marking and records: Mandates marking, traceability and retention of quality records for manufactured items.
- Unit systems: Provides data in both SI and US customary units (separate tables and Annex A) to support global procurement and manufacturing.
- Materials in sour service: References ISO 15156 for material selection in H2S-containing environments.
Practical applications and users
ISO 10424-1 is used to:
- Develop procurement specifications and purchase orders for rotary drill stem elements.
- Guide manufacturers in design, material selection, NDE and quality control for kellys, subs, drill collars and bits.
- Support drilling contractors, rig operators and maintenance teams in equipment compatibility and inspection regimes.
- Provide QA/QC and inspection bodies with acceptance criteria and record-keeping requirements.
- Aid standards engineers and regulatory bodies aligning equipment to international practice.
Users include manufacturers, drilling contractors, oil & gas operators, inspection agencies, and procurement teams focused on rotary drilling equipment, drill stem elements, and rig interoperability.
Related standards
- ISO 10424-2 - Threading and gauging of rotary shouldered thread connections
- ISO 13535 - Swivel requirements
- ISO 11961 - Drill pipe with weld-on tool joints
- ISO 15156 series - Materials for H2S environments
- API Spec 7 / API RP 7G - Related API documents referenced in the standard
Keywords: ISO 10424-1:2004, rotary drill stem elements, kelly valves, drill collars, drill-stem subs, drilling and coring bits, rotary drilling equipment, NDE, oil and gas standards.
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