Unity’s digital Barrier Verification System (BVS) enhances efficiency and de-risks integrity, intervention and decommissioning operations.
Deployed by our Surface Intervention System (SIS), the BVS, along with our Intermediate Expansion (IX) Bridge Plug, allows us to set and validate two near-surface well barriers when we need to carry out critical work at the wellhead, such as lower master valve repairs or tree change-outs.
Our compact SIS will set two IX Bridge Plugs as a dual well barrier up to depths of around 100 ft. The BVS module is connected to the underside of the upper plug and its slim design allows it to be run and set with the plug using standard setting tools. Once deployed, pressure and temperature sensors continuously monitor the integrity of the isolated zone allowing us to confirm that the upper plug has been set successfully and removing any doubt that the lower plug is inadvertently being tested.
Downhole data is wirelessly transmitted to a non-intrusive (magnetically mounted) surface receiver at the wellhead, which interfaces with a surface readout panel and laptop located in a safe area. Both live and historical data can be monitored during operations to capture any subtle trends over time, de-risking operations. For long term monitoring, alerts can be set for specified data thresholds. The BVS is rated to 10,000 psi and 150 °C and uses a lithium-ion battery with a lifespan of up to five years.
This technology enhances Unity’s full-service capability, allowing an even greater scope of offline, rigless intervention activities to be performed efficiently and cost effectively.
The IX Plug and the BVS can also be supplied separately as standalone product packages for wireline deployment.