[[file:enhanced-oil-recovery_fig3.png|thumb|{{figure number|3}}Schematic diagram of steam flooding. In this method, heat reduces the viscosity of oil and increases its mobility. © U.S. Department of Energy, Bartlesville, Oklahoma.]] | [[file:enhanced-oil-recovery_fig3.png|thumb|{{figure number|3}}Schematic diagram of steam flooding. In this method, heat reduces the viscosity of oil and increases its mobility. © U.S. Department of Energy, Bartlesville, Oklahoma.]] |