Alkali metal silicides are a new class of materials that can provide thermal, chemical and immiscible gas drive benefits in one treatment. Not previously known in oilfield applications, these materials are solid, energy-dense chemicals that generate heat, hydrogen and an alkali silicate upon reaction with reservoir water. The reaction is only limited by availability of any type of water; in a closed environment, pressures >10,000 psi can be generated. Alkali metal silicides are dispersible in various hydrocarbon fluids to facilitate placement in a reservoir and can be coated to allow time delayed reaction. The powders can also be milled to submicron size for optimum injectivity in high permeability reservoirs. This combination of material and reaction-product properties makes silicides particularly applicable for the recovery of heavier crude oils. Since the chemical reaction occurs in-situ, silicides are not subject to the thermal efficiency limitations of conventional thermal EOR processes at depth. Further, the resulting hydrogen and silicate reaction products represent a "green" chemistry approach that may reduce the environmental impact of oil recovery operations. This paper presents bench scale core flood results demonstrating that alkali metal silicides can recover greater than 50% of residual oil. Results also show that alkali metal silicides can provide accelerated oil production, as much as 20% faster than comparable chemical technologies.