TX 75083-3836, U.S.A., fax 01-972-952-9435. AbstractMany heavy oil and oil sand reservoirs are in communication with water sand(s). Depending on the density ( o API gravity) of oil, the water sand could lie above or below the oil zone. Steamflooding a heavy oil or oil sand reservoir with a contiguous water sand (water which may lie below or above the oil-bearing zone) is risky due to the possibility of short circuiting the steam chamber.

TX 75083-3836, U.S.A., fax 01-972-952-9435. AbstractMany heavy oil and oil sand reservoirs are in communication with water sand(s). Depending on the density ( o API gravity) of oil, the water sand could lie above or below the oil zone. Steamflooding a heavy oil or oil sand reservoir with a contiguous water sand (water which may lie below or above the oil-bearing zone) is risky due to the possibility of short circuiting the steam chamber.

No abstract

28Journal of Canadian Petroleum Technology FIGURE 4: Ratio of steam injected to fluid (oil and water) produced. FIGURE 7: Recovery efficiency: Confined water sand 6 m thick. FIGURE 5: Percentage of heat accumulated, produced and loss. FIGURE 6: Ratio of heat accumulated to heat injected-Confined water sands 6 m thick. FIGURE 9: Ratio of heat accumulated to heat injectedUnconfined water sands 6 m thick. FIGURE 10: Ratio of heat accumulated to heat injectedUnconfined water sands 9 m thick. FIGURE 8: Recovery efficiency: Unonfined water sand 6 m thick. FIGURE 11: Recovery efficiency: Unconfined water sand 9 m thick.