Case Study
Controlled Glass Plug removal for Subsea Well Commissioning
Safe and controlled glass barrier removal using the SubComm system to enable well start-up while ensuring full containment of return fluids.
Safe Well Commissioning Through Controlled Pressure Management
Challenge
Following installation and commissioning of the well, the shallow and deep-set glass barriers needed to be opened to enable the well to be brought into operation. The operation required precise pressure control as well as safe handling of return fluids.
Solution
The solution was to use the SubComm system to perform controlled pressurization and depressurization cycles to activate and open the glass barriers in the well.
A key advantage of the SubComm system is its closed-loop design. During depressurization, all return fluid, including potential hydrocarbons from the well, is fully contained within the system rather than released to the environment or exposed to personnel. The return fluid is also filtered as part of the process, enabling controlled and safe fluid handling throughout the operation.
Result
Glass barrier removal was carried out in a safe, controlled, and efficient manner.
The operation demonstrated:
- Precise and predictable pressure control during barrier opening
- Safe depressuriation without discharge of fluids to the environment
- Reduced exposure of personnel to potentially hazardous fluids
- Controlled filtration and containment of return fluids within the system
This solution offers a reliable and environmentally responsible method for subsea barrier removal and well commissioning in demanding offshore environments. It has been successfully applied in numerous projects and has demonstrated consistent performance to the satisfaction of our clients.
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