Feasibility of In-Situ Hydrogen Production During Fire Flooding in Reservoirs after Steam Injection Development

doi:10.3969/j.issn.1006-6535.2024.01.010

Abstract

Abstract: A study on the influence of water saturation on the in-situ hydrogen production effect from heavy oil was carried out through combustion tube experiments to study the feasibility of technology on in-situ hydrogen production during fire flooding in reservoirs after steam injection development. The results show that the presence of water enhances the convective heat transfer effect and provides a high-temperature environment for the fracture of C-C and C-H in hydrocarbons and promotes the reversible reactions such as hydrothermal cracking, coke gasification, and water-steam conversion of heavy oil to move toward hydrogen production, which improves the in-situ hydrogen production effect. The temperature is 715.1 ℃, and the hydrogen volume fraction is up to 1.03% when the water saturation reaches 24.58%. The results verified the feasibility of in-situ hydrogen production from heavy oil during fire flooding in heavy oil reservoirs after steam injection development, and the study has significant reference value for improving the in-situ hydrogen production effect from heavy oil during fire flooding.

Key words: heavy oil, hydrogen energy, fire flooding, in-situ hydrogen production, water saturation

CLC Number:

TE357

Wang Tiantian, Zhao Renbao, Jiang Ningning, Li Xin, Xu Han, Wang Hao. Feasibility of In-Situ Hydrogen Production During Fire Flooding in Reservoirs after Steam Injection Development[J]. Special Oil & Gas Reservoirs, 2024, 31(1): 81-86.

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