Apparatus and method for the exploitation of oil sands

Apparatus downhole for oil sands, comprising at least: - a casing (130) for housing a conduit (250) of water to receive water through a water pipe, - at least one chamber (375) of steam generation is in fluid communication with said conduit (250) of water and having at least one outlet opening (390) of steam, - at least one electrical heater (350) which is connected thermally to said chamber (375) for generating steam, - the casing comprises at least one conduit (135) of crude oil to recover crude oil, which has been mobilized by said characterized vapor that the at least one chamber ( 375) of steam generation is supported by the peripheral surface of the casing (130).