BiSN engineers were challenged to further increase the expansion ratio beyond that of the original system without compromising its pressure differential and gas-tight sealing capabilities.
By incorporating a bailer in its configuration, the tool is able to be deployed on a single run alongside the thermite heater without having to pump beads down from the surface. This allows for a smaller diameter tool to be run in hole while increasing the expansion ratio up to three times the OD of the tool.
The result is a higher expansion ratio than conventional plugs, higher pressure ratings than inflatable packers and gas blocking abilities that cement cannot match.
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