In 2025, VVLAI successfully deployed its independently developed VY150 Work-Class ROV to support a comprehensive underwater operation program in the South China Sea oil and gas region.
The project involved subsea hazard assessment, geological risk investigation, underwater equipment installation, and routine operation and maintenance services. Working in a complex offshore oil and gas environment, the VY150 provided critical support for geological surveying, risk monitoring, asset inspection, equipment maintenance, and underwater intervention tasks, helping ensure the safe, stable, and long-term operation of subsea production systems.
The operational area was characterized by highly concentrated shallow gas deposits and fragile geological formations. These conditions increased the risk of gas seepage and seabed instability, requiring highly reliable equipment capable of operating safely in sensitive environments.
Due to unstable geological conditions and subsea hazards, conventional large-scale construction equipment could not safely access many operational areas. Precision intervention equipment was required to perform inspection and maintenance tasks without disturbing the surrounding environment.
The oil and gas field contained an extensive network of subsea pipelines, production support equipment, and monitoring sensors distributed across a wide area. Maintaining asset integrity required continuous monitoring, frequent inspections, and rapid response capabilities, placing high demands on equipment reliability and endurance.
The project combined risk assessment, underwater installation, inspection, maintenance, and operational support into a unified subsea service program, providing full lifecycle support for offshore oil and gas infrastructure.
The VY150 enabled 24/7 monitoring of geological and environmental conditions, supporting proactive risk identification and helping operators mitigate potential hazards before they escalated.
Through its modular design and advanced tooling capabilities, the VY150 successfully performed a variety of underwater intervention tasks, including equipment installation, positioning, cleaning, inspection, and minor repair operations.
To meet the demanding requirements of deepwater oil and gas operations, VVLAI deployed the VY150 Work-Class ROV, a versatile subsea intervention platform designed for inspection, maintenance, and underwater engineering applications.
Equipped with high-precision survey and detection systems, the VY150 conducted comprehensive subsea geological investigations across the operational area. The system continuously monitored seabed conditions, water dynamics, and geological changes, providing early warning of potential risks such as gas seepage and seabed instability.
Leveraging a range of mission-specific modules and tools, the VY150 performed:
-Subsea pipeline inspections
-Monitoring sensor verification
-Oil and gas production equipment inspections
-Risk identification and condition assessments
-Routine maintenance support
These operations helped maintain the integrity and reliability of critical subsea assets.
The ROV also supported precision underwater operations, including:
-Positioning and installation of small subsea equipment
-Marine growth removal from subsea structures
-Minor repair and maintenance assistance
-Inspection and verification of newly installed assets
This multifunctional capability significantly reduced operational costs while improving maintenance efficiency.
Enhanced Operational Safety
Through continuous monitoring and proactive risk assessment, the project helped identify and mitigate hazards associated with gas seepage, seabed instability, and equipment degradation, significantly improving the safety of offshore operations.
The project enabled VVLAI to develop a comprehensive and standardized workflow for underwater inspection, installation, and maintenance activities in deepwater oil and gas environments.
Throughout long-term offshore deployment, the VY150 achieved stable performance with zero major operational failures, demonstrating the reliability, adaptability, and engineering maturity of domestically developed work-class ROV technology in challenging deepwater conditions.
The South China Sea Oil & Gas Field Risk Survey, Underwater Installation and Maintenance Project showcases VVLAI’s capabilities in subsea inspection, intervention, and long-term asset management.
By deploying the VY150 Work-Class ROV, VVLAI delivered a comprehensive underwater service solution that combined risk monitoring, equipment installation, inspection, and maintenance into a single operational framework. The project’s success further strengthens VVLAI’s position as a trusted provider of advanced underwater robotics and subsea engineering solutions for the global offshore energy industry.
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