HT Energy provides professional N₂-He Leak Testing and Nitrogen Purging services for pipelines, process systems, pressure equipment, and offshore facilities. These services are essential during commissioning, shutdown, turnaround, and maintenance phases to eliminate hydrocarbons, oxygen, and explosive atmospheres.

Nitrogen purging replaces oxygen and flammable gases with inert nitrogen, creating a safe environment for system entry or hydrocarbon introduction. By reducing oxygen concentration below the combustion threshold, nitrogen purging significantly minimizes the risk of fire, explosion, and corrosion.

Helium leak testing is a highly sensitive method that detects extremely small leaks that conventional pressure tests cannot identify. Helium’s small molecular size allows it to escape through microscopic defects, enabling early detection and corrective action before commissioning.

HT Energy delivers a complete turnkey solution, covering engineering design, purging and leak testing procedures, equipment mobilization, site execution, monitoring, and reporting. Our equipment supports test pressures up to 15,000 psi, high-capacity nitrogen flow rates, and portable helium leak detectors with high sensitivity.

We apply displacement, dilution, and pressure-cycling purging techniques depending on system geometry and operational constraints. Continuous oxygen monitoring ensures safe conditions are achieved and maintained throughout the operation.

With extensive offshore and onshore experience, HT Energy supports platforms, FPSOs, refineries, gas plants, and petrochemical facilities. Our services ensure leak-free start-up, improved safety, corrosion prevention, and compliance with international standards.

Key Project Experience

• Lac Da Vang CPP (Murphy Oil – 2025): N2He Leak Testing
• Block B Project (PQPOC – 2025): N2He  Leak Testing.
• Rong Doi Platform (Zarubezhneft – 2025): Nitrogen Leak Testing.
• Gas Membrane Project (VinaOffshore – 2024): N2He Leak Testing.
• Rong Doi Platform (KNOC – 2023): Nitrogen Leak Testing.
• BDPOC TAR 2023 (BDPOC – 2023): Nitrogen Leak Testing.
• SV-DN Platform (IDEMITSU – 2022): Nitrogen Leak Testing.
• Rong Doi Platform (KNOC – 2022): Nitrogen Leak Testing.
• FPSO Lewek Emas – Chim Sao (Premier Oil – 2022): Purging and Leak Testing for FPSO Lewek Emas.
• SV-DN Development (IDEMITSU – 2021): Pipeline Isolation, Leak Testing, and Reinstatement.
• Re-leak Whole System of SV-CPP (IDEMITSU – 2020): Nitrogen/Helium ($N_2He$) Mixture Leak Testing.
• Leaktest for HUC Scope of SV-CPP (IDEMITSU – 2020): Nitrogen/Helium ($N_2He$) Mixture Leak Testing.
• 8K Gas Compressor Maintenance (CUULONG JOC – 2019): Nitrogen Leak Testing.
• LPG Recovery System at GPP Dinh Co Phase II (PV GAS – 2018): Nitrogen Leak Testing.
• LPG Recovery System at GPP Dinh Co Phase I (PV GAS – 2017): Nitrogen Leak Testing.
• STT Full Field Development – Living Quarter (CUULONG JOC – 2016): Nitrogen Leak Testing.
• SHWE Shutdown Project (Myanmar) (ONGC – 2016): N2He Leak Testing.

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