The presence of mantle-derived fluids plays a significant role in the generation and accumulation of hydrocarbons in sedimentary basins. These fluids, rich in hydrogen and other catalytic elements, can enhance the conversion of kerogen to hydrocarbons through hydrogenation reactions, effectively increasing the rate of hydrocarbon generation. This process is particularly impactful for sapropelic kerogens, which are more sensitive to the addition of hydrogen. Furthermore, mantle-derived fluids can act as a source of heat, facilitating the maturation of organic matter into hydrocarbons. They may also contribute to the preservation of hydrocarbons by replenishing hydrogen consumed during thermal cracking, thus maintaining the reducing conditions necessary for hydrocarbon stability. The research indicates that deep fluids significantly affect the formation and maturation of hydrocarbon source rocks, influencing the overall hydrocarbon system within sedimentary basins. For more detailed information, refer to the studies published on platforms like ScienceDirect and ResearchGate, which provide comprehensive analyses of these geological processes [1][2][3].