This study introduces a novel method for exploiting gas reservoirs with high initial water saturation, which often hinders gas production and economic viability. We adapted the enhanced oil recovery technique of in situ combustion (ISC) for these gas reservoirs, aiming to initiate steam methane reforming (SMR) to generate hydrogen and extend reservoir life. Three types of experiments were conducted. Sealed reactor experiments assessed the potential for extreme temperatures in porous media with catalysts to convert methane to hydrogen. Tube reactor experiments explored the feasibility of methane combustion, determining optimal process parameters like injection rate and thermal properties. Combined ISC and SMR approach demonstrated the simultaneous combustion of methane and hydrogen generation, achieving hydrogen concentrations of more than 60%. Key findings include optimal conditions for SMR (8 MPa, >800 °C, high water saturation), successful methane combustion with temperatures between 1000 and 1400 °C, and a feasibility of a combined ISC and SMR process in a natural gas reservoir. This groundbreaking approach offers a new way to utilize challenging gas reservoirs, potentially revolutionizing the field.