Performance Barrier Technologies

The heart of the heater – controlled thermite

BiSN’s thermite heaters blend precision with speed for well technology that seals in minutes and is ready to test within hours. By setting off a thermite chemical reaction on electric line, the unique bismuth-based alloy melts and flows into even the smallest of micro-annuli.

BiSN wel-lok™ Alloy

Flows like water, V0 gas tight seals in minutes. With a carefully cultivated mixture of alloys, we create a fast and precise sealing method that’s non-corrosive, better for the environment, and expands on solidification, creating a gas-tight seal.

wel-lok™ technology in action

Watch a quick demonstration [under 1 minute] of the real wel-lok™ technology in action and see how a BiSN chemical reaction heater deployed downhole can melt custom BiSN bismuth based alloys, before being retrieved, demonstrating the unique properties of the wel-lok™ expansion under cooling to form a v0 seal.