Method and apparatus used to deploy and process eutectic metal alloy material into an oil, gas or water well for the purpose to plug and seal selected downhole casing leaks. The apparatus includes a power control unit located at surface and a downhole tool that is lowered into the well by standard wireline cable. The downhole tool delivers the necessary quantity of metal alloy, forms the required temporary bridge plug support for containing the molten alloy, melts the alloy by means of electric heating, heats the surrounding wellbore formation, squeezes the molten alloy through the perforations and recovers any excess alloy for subsequent recycling.