Case study

Gulf of Mexico Deepwater Pre-Commissioning Sucess

November 17, 2025

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Overview

EnerMech successfully executed a complex pre-commissioning campaign for multiple deepwater pipelines in the US Gulf for LLOG. The project involved hydrotesting and high-capacity nitrogen dewatering under extreme summer heat and limited deck space on a Class 320’ vessel. Through six months of engineering preparation, custom equipment layouts, and a robust Heat Mitigation Plan, the team delivered the campaign safely, efficiently, and on schedule.

Key Highlights

  • Hydrotesting and nitrogen dewatering completed within schedule

  • Nitrogen spread achieved 10,000 SCFM at up to 5,000 psi

  • Six months of engineered planning and equipment modifications

  • Heat Mitigation Plan safeguarded crew and optimized performance

  • Custom manifolds and stacking platforms maximized deck space

  • Strong collaboration with client and vessel teams ensured real-time problem-solving

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