SIST EN ISO 10424-2:2009 PDF

Overview

SIST EN ISO 10424-2:2009 establishes internationally recognized criteria for threading and gauging of rotary shouldered thread connections, specifically for use in petroleum and natural gas industries. This standard, aligned with ISO 10424-2:2007, provides detailed requirements for the dimensions of threads and gauges, gauging techniques, and inspection methods for rotary drilling equipment. Its main objective is to ensure the consistency, reliability, and interchangeability of drill-string component connections, promoting operational safety and efficiency in drilling operations.

Key Topics

• Rotary Shouldered Connection Designs: Covers three preferred designs commonly used in drill-string components:

  • Number (NC) Style
  • Regular (REG) Style
  • Full Hole (FH) Style

• Thread Dimension and Gauging:

  • Specifies dimensional requirements for threads, including thread profile, form, lead, taper, and pitch diameter.
  • Details on gauge types-master, reference, working-and their calibration for maintaining accuracy.
  • Describes required tolerances for the manufacture and inspection of thread connections.

• Inspection Methods:

  • Outlines instruments and methodologies for thread and gauge inspection.
  • Addresses calibration systems for gauges, including criteria for certification and ongoing verification.

• Supplementary Requirements:

  • Recognizes the need for additional, application-specific tolerances, testing, qualification, and finishing processes, which can be agreed upon by involved parties.

Applications

This standard is essential for organizations involved in the design, manufacturing, and inspection of rotary drilling equipment for the petroleum and natural gas sectors. Primary applications include:

• Drill-String Components: Applies to new production and inspection of drill pipe, drill collars, and related assemblies that utilize rotary shouldered thread connections.
• Quality Assurance: Used by manufacturers and inspection agencies to ensure products meet strict international dimensional and performance requirements for interchangeability and reliability.
• Procurement Specifications: Serves as a contractual reference for oil and gas companies procuring drill-string equipment from global suppliers, ensuring compatibility with existing systems.

The traceability of connections to an internationally supported gauge and calibration system ensures global interchangeability, a critical factor for multinational operations and joint ventures in oil and gas exploration.

Related Standards

For a comprehensive approach to rotary drilling equipment, the following standards are relevant:

• ISO 10424-1: Covers rotary drill stem elements, providing additional guidance on equipment beyond thread connections.
• ISO 11961: Specifies requirements for steel drill pipe, complementing the threading and gauging requirements.
• API Spec 7: An important North American equivalent, referenced in the development of ISO 10424-2.

Adhering to SIST EN ISO 10424-2:2009 ensures alignment with CEN and ISO standards, facilitating product acceptance in both European and international markets.

Practical Value

Implementing this standard helps companies:

• Reduce risks of connection failures during drilling
• Achieve consistent product quality across different supply sources
• Improve operational safety and minimize unplanned downtime
• Facilitate cross-border equipment compatibility and procurement

By specifying the minimum requirements and best practices for threading and gauging of rotary shouldered connections, SIST EN ISO 10424-2:2009 underpins quality assurance and standardization in modern petroleum and natural gas exploration operations.