ISO 13678:2010

Overview

ISO 13678:2010 - "Petroleum and natural gas industries - Evaluation and testing of thread compounds for use with casing, tubing, line pipe and drill stem elements" - defines laboratory requirements, recommendations and test methods to evaluate thread compounds used on threaded casing, tubing, line pipe and rotary shouldered connections. Published as the third edition in 2010 by ISO/TC 67, the standard focuses on characterizing performance, physical and chemical properties of lubricating base grease formulations under controlled test conditions. ISO 13678:2010 is a testing standard - it does not specify formulations nor address environmental compliance; end users remain responsible for field validation and regulatory obligations.

Key topics and technical requirements

• Scope and conformance: laboratory test methods for thread compounds used on casing, tubing, line pipe and drill stem elements; units provided in SI and USC systems.
• Product and chemical characteristics: required characterization of penetration, dropping point, evaporation, oil separation and other physical properties (see normative references ISO 2137, ISO 2176, ASTM D217, ASTM D2265, ASTM D4048).
• Performance properties:
  • Frictional properties to ensure consistent make-up torque and uniform engagement.
  • Galling resistance (extreme surface contact pressure) to prevent damage during make-up/breakout.
  • Fluid sealing properties for thread-type seals and compatibility with non-thread seals (metal-to-metal, PTFE, etc.).
  • Stability: high-temperature stability, water leaching, gas evolution and corrosion inhibition tests.
• Quality assurance and marking: guidance on QA/QC, labelling and marking requirements.
• Annexed test methods: numerous normative and informative annexes describe specific tests (penetration, evaporation, oil separation, adhesion, gas evolution, frictional tests, galling and fluid sealing tests, corrosion inhibition, high-temperature stability).

Practical applications and typical users

• Useful for manufacturers of thread compounds to develop, validate and demonstrate product performance.
• Employed by oil & gas operators, procurement and quality engineers to evaluate candidate lubricants and compare products under standardized laboratory conditions.
• Applied by third‑party testing laboratories and R&D teams for batch qualification, performance benchmarking and troubleshooting of make-up/seal issues.
• Supports selection of compounds for casing, tubing, line pipe, premium and rotary shouldered connections where controlled lubrication and sealing characteristics are critical.

Related standards

• API RP 5A3 / API RP 7A1 (historical basis and complementary guidance)
• ISO 2137, ISO 2176, ASTM D217, ASTM D2265, ASTM D4048 (normative test methods referenced)

Keywords: ISO 13678:2010, thread compounds, casing, tubing, line pipe, drill stem elements, rotary shouldered connections, testing methods, frictional properties, galling resistance, fluid sealing, lubricant testing.