Drillstring Inspection Standard
Once printed this specification becomes an uncontrolled copy of the online version.
Introduction
NS-2™ Drill String Inspection Standard
This standard has a long history within the Oil & Gas Industry and it has been developed over the last 20
years.
It is used by operators worldwide and has been instrumental, where adopted, as the principal inspection
document used for the purpose of reducing drill string failures.
NS-2™ covers many areas of drill string inspection not currently covered by other inspection standards
such as:
• Specialised drilling equipment
• Automated thread inspection
• Receipt inspection for new drill pipe
• Fishing and milling tools
• Specific inspection frequency guidelines
• Integral Joint Tubing Inspection Requirements (for TTRD operations)
• Lift Subs
• Running Tools
NS-2™ is one of a range of NS Publications aimed at providing instruction and increasing knowledge and
awareness within the industry. Other publications, which may be used in conjunction with NS-2™ as part of
a quality programme include:
• NS-1™ Quality and Inspection Requirements for New and Refurbished Drilling & Completion Equip-
ment
• NS-3™ Drill String Design Manual
• NS-5™ Drill String Failure Prevention Rig Team Handbook
• NS-19™ The Rig Team Tool Joint and Connection Handbook
• NS-21™ Drill String Knowledge Handbook
Photocopying or reproducing this page in any way constitutes as an infringement of the license
agreement for the continued supply of the NS-2™ Service
NS-2™ Page 1
