METHOD FOR THE SIMULTANEOUS RE-INJECTION, WITHOUT COMPRESSORS, OF LOW-PRESSURE GAS AND WATER INTO PARTIALLY EXHAUSTED RESERVOIRS WITH THE GENERATION OF ELECTRIC ENERGY BY THE RE-PRESSURIZED GAS

摘要

Method for the re-injection and use of low-pressure associated gas in a partially exhausted reservoir (10) with which a production plant comprising a plurality of production wells (11,12) is associated, the method comprising the following steps: conveying the low- pressure associated gas extracted from at least one first extraction well (12) of the plurality of wells (11, 12, 13) to the inlet of a mixer (21); mixing the low-pressure associated gas with water at the surface; injecting said mixture of associated gas and water into an injection well (11) selected from the plurality of wells (11, 12) so as to generate a hydrostatic head which re-pressurizes and sends said associated gas into the partially exhausted reservoir.