SYSTEM AND METHOD FOR DEPLOYING VOLATILE CORROSION INHIBITOR TO PROTECT AGAINST SOIL SIDE CORROSION AT THE BOTTOM OF A STORAGE TANK

Smart overview of the Invention

The disclosed system and method focus on delivering volatile corrosion inhibitors (VCIs) to the soil-side bottom of storage tanks to prevent external corrosion. The system includes a transport material buried beneath the tank, which releases VCI in response to external stimuli like soil pH or potential. This adaptive release is regulated by a control valve and monitored by a control system that assesses soil conditions to optimize VCI deployment. Horizontal drilling techniques are employed for system installation, allowing for continuous tank operation during deployment.

Background

Corrosion in storage tanks, particularly in the oil and gas industry, poses significant challenges due to moisture and hydrocarbon exposure. Traditional inspection methods are labor-intensive and require taking tanks offline. The soil-side bottom of tanks is especially vulnerable to corrosion, making it difficult to inspect and repair. The disclosed system addresses these challenges by providing an automated, efficient method for delivering corrosion protection without interrupting tank operations.

System Components

The system comprises a VCI storage tank, a flow control valve, a transport material, and optionally, a carrier structure. The transport material, potentially a polymer membrane, absorbs and releases VCI in a controlled manner. It can adjust the release rate based on external stimuli, ensuring optimal VCI usage. The system's design allows for horizontal drilling installation, ensuring minimal disruption to tank operations.

Operational Efficiency

Efficient VCI delivery is crucial to prevent excessive consumption and ensure adequate protection. The system measures soil conditions to adjust VCI release, maintaining optimal concentrations for corrosion protection. The transport material allows for long-term control over VCI deployment, reducing unnecessary material usage and ensuring consistent protection of the tank's bottom plate.

Advantages and Implementation

The system offers an adaptable solution for mitigating soil-side corrosion in storage tanks, enhancing asset protection and reducing operational downtime. It allows for VCI refilling, ensuring continuous protection. By optimizing VCI delivery and maintaining appropriate concentrations, the system addresses challenges like over-consumption and inefficient protection, providing a reliable method for corrosion mitigation while the tank remains operational.