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Well Integrity Audit

NTCSOS experienced team evaluates existing client integrity management systems, procedures, and asset-specific information. Following this evaluation, a review is conducted to benchmark existing processes against industry best practices, which has been developed on the basis of industry standards and guidance guidelines (e.g. ISO/TS 16530-1&2:2014, API standards, NORSOK D-010, Guidelines for the suspension and abandonment of wells, Issue 4, July 2012).

This process aims to identify areas for improvement to ensure clients continue achieving goals related to safety, integrity management, compliance, and reliability



We are adopting the following API standards in our audit services


  1. In our audit we can either follow our client standards, policies and local regulations, otherwise we are following the international standards including NORSOK D-010, ISO/TS 16530-1&2:2014 and the following API standards :


  1. API 6AF: "Technical Report on Capabilities of API Flanges Under Combinations of Load"

  2. API 6A/ISO 10423: "Specification for Wellhead and Christmas Tree Equipment"

  3. API RP 14A/ISO 10432: "Subsurface Safety Valve Equipment"

  4. API RP 14B/ISO 10417: "Design, Installation, Repair and Operation of Subsurface Safety Valve Systems"

  5. API RP 14C: "Recommended Practice for Analysis, Design, Installation, and Testing of Basic Surface Safety Systems for Offshore Production Platforms"

  6. API Spec 14D: "Wellhead Surface Safety Valves and Underwater Safety Valves for Offshore Service."

  7. API RP 14E: "Recommended Practice for Design and Installation of Offshore Production Platform Piping Systems"

  8. API RP 14H: "Recommended Practice for Installation, Maintenance, and Repair of Surface Safety Valves and Underwater Safety Valves Offshore"

  9. API RP 14J: "Recommended Practices for Design of Hazards Analysis for Offshore Production Facilities"

  10. API Spec 17D: "Design and Operation of Subsea Systems - Subsea Wellhead and Tree Equipment (ISO 13628-4)"

  11. API RP 57: "Offshore Well Completion, Servicing, Workover, and Plug and Abandonment Operations"

  12. API RP 65: "Cementing Shallow Water Flow Zones in Deep Water Wells"

  13. API RP 90: "Management of Sustained Casing Pressure on Offshore Wells“

  14. API Bulletin E3: "Well Abandonment and Inactive Well practices for U.S. Exploration and Production Operations, Environmental Guidance Document“

  15. TR9501, Rev A: "Specification for Stud Bolts and Tap End Studs"

New Technology & Consulting Special Oilfield Services (NTCSOS) 

NTCSOS provides Oil & Gas industry Well Integrity services and solutions along with qualified and experienced personnel .
Our services and solutions are innovative and cost effective.



NTC SOS Services
12, rue Boumendjel Alger.
Phone: 0542 16 32 87
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(+213)0542 16 32 87