厚度估测.pdf

Energy & Fuels 1998, 12, 1153-1160 1153
Estimation of Combustion Zone Thickness during In Situ
Combustion Processes
Suat Bagci
Petroleum and Natural Gas Engineering Department Middle East Technical University,
06531 Ankara, Turkey
Received January 21, 1998
Dry and wet combustion runs were conducted using three different crude oils having ,
and °API gravity. Combustion zone thickness measurements were made with four
stationary in-situ sampling gas probes installed on the combustion tube at 36, 48, 60, and 72 cm
from the top flange. Experiments were carried out in a thin-walled vertical tube having a
cm diameter and cm length. Adiabatic control of the combustion tube was achieved during
dry and wet combustion tests using external band heaters and an adiabatic control system. The
average air flux was m3 (St)/(m2 h), and injected WAR changed from to m3/
Mm3(St). Experimental results showed that the average zone thickness was 80 mm for a dry
combustion process while it was 50 mm for a wet combustion process. The combustion z