Assembly for generating electricity in a production well of a hot fluid

Abstract

The present application is related to an assembly for generating electricity in a production well of a hot fluid, the hot fluid being water, oil or gas, the production well comprising: ⋅—a casing; ⋅—a production tubing, comprising an inner side and an outer side, the production tubing: ⋅ being housed in the casing; ⋅ being adapted to transport hot fluid from a collecting downhole location of the well to an outer part of the well in respect to the collecting downhole location, and ⋅ wherein between the production tubing and the casing there is an inner space configured to house a cold fluid; ⋅—a barrier between the production tubing and the casing to fluidically separate the inner space and the interior space housed by the casing at a collecting downhole location; ⋅—at least one thermoelectric means comprising a hot side and a cold side, wherein the thermoelectric means are configured to generate electricity when the hot side is in thermal contact with a hot source and the cold side is in contact with a cold source, the hot side of the at least one thermoelectric means, in operative mode, is thermally connected to the hot fluid transported by the production tubing and the cold side is thermally connected to the cold fluid of the inner space, and ⋅—an electrical conductor connected to the at least one thermoelectric means for transporting the generated electricity to at least an outer part of the well.