Bisn Oil Tools LTD

bisn has developed a range of patented products including the bisn bridge plug designed to address the shortcomings associated with using bridge plugs and cement. bisn’s tools use an alloy based on bismuth that is melted in situ. our tools use the expansion properties of bismuth to seal the well. bismuth is one of the few elements that expands on solidification. the in situ melting of the bismuth based alloy allows the alloy to flow into all the available features of the casing wall. this allows a strong seal to be created, even in corroded or cracked casings. once the heat source is re- moved the bismuth based alloy will cool and due to the composition it will expand upon freezing. the expanding bismuth based alloy creates a strong corrosion resistant seal. this process removed the need to use a bridge plug and cement.bisn oil tools is developing a range of products using metal to metal seals. the tool has been qualified to v0 under the iso 14310 classification. the tool can also be u