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.
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
.
DOI: 10.3969/j.issn.1006-6535.2024.01.010
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