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Structural Casing-Wellhead-Tree-Riser System Fatigue API Summer Standards Conference, June 2012

Structural Casing-Wellhead-Tree-Riser System Fatigue API Summer Standards Conference, June 2012. Structural Casing-Wellhead-Tree-Riser System Fatigue API Summer Standards Conference June 2012. Structural Casing-Wellhead-Tree-Riser System Fatigue API Summer Standards Conference, June 2012.

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Structural Casing-Wellhead-Tree-Riser System Fatigue API Summer Standards Conference, June 2012

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  1. Structural Casing-Wellhead-Tree-Riser System Fatigue API Summer Standards Conference, June 2012

  2. Structural Casing-Wellhead-Tree-Riser System FatigueAPI Summer Standards ConferenceJune 2012

  3. Structural Casing-Wellhead-Tree-Riser System FatigueAPI Summer Standards Conference, June 2012

  4. Structural Casing-Wellhead-Tree-Riser System FatigueAPI Summer Standards Conference, June 2012 At Issue… • Assumed VIV fatigue damage to wellhead West of Shetland in 1980s. • Observed movements in several wellheads, N. Sea in 2005, ‘06 & ‘10 • One wellhead retrieved and inspected without findings • Fatigue calculations from different parties with differences in results of several magnitudes. • More recently: • GoM floating systems monitoring riser fatigue & motion • BSEE queries in early project stages

  5. Structural Casing-Wellhead-Tree-Riser System FatigueAPI Summer Standards Conference, June 2012 Relevant API Guidance: • 2RD - Design of Risers for Floating Production Systems (FPSs) and Tension-Leg Platforms (TLPs) • 17A - Design and Operation of Subsea Production Systems-General Requirements and Recommendations, 4th Edition • 17B - Recommended Practice for Flexible Pipe, Fourth Edition • 17D - Specification for Subsea Trees and Wellheads, 2nd Edition • 17E - Specification for Subsea Umbilicals, Fourth Edition • 17F - Specification for Subsea Production Control Systems, Second Edition • 17G - Recommended Practice for Completion / Workover Risers, Second Edition • 17H - Recommended Practice for Remotely Operated Vehicle (ROV) Interfaces on Subsea Production Systems • 17J - Specification for Unbonded Flexible Pipe, Third Edition • 17K - Specification for Bonded Flexible Pipe, Second Edition • 17M - Recommended Practice on Remotely Operated Tool (ROT) Intervention Systems

  6. ATP Oil & Gas Corporation (NASDAQ: ATPG) ATP Oil & Gas Corporation 4600 Post Oak Place , Suite 100 Houston, TX 77027-9726 713-622-3311 ATP Oil & Gas (UK) Limited Victoria House, London Square, Cross Lanes Guildford, Surrey GU1 1UJ United Kingdom 44 (0) 1483 307200 ATP Oil & Gas (Netherlands) B.V. Water-Staete Gebouw Dokweg 31 (B) 1976 CA IJmuiden The Netherlands 31 (0) 255 523377 ATP East Med B.V. 15 Aba Even Street Herzliya Pituach 46725 Israel www.atpog.com ATP Innovator Octabuoy ATP Titan 5

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