Analytical investigation of wet combustion process for heavy oil recovery

Bağcı, Ali Suat
Analysis of combustion tube data produced from experiments performed under realistic reservoir conditions is currently the most valid method of investigating in-situ combustion process. In this study, the optimization of water-air ratio for B. Kozluca heavy crude oil, and the comparison of the performance of dry and wet forward combustion processes were studied. An analytical model was used to extend the laboratory results so that the oil production and steam zone volume can be estimated under field conditions. A total of nine combustion tube experiments were carried out under adiabatic conditions in the laboratory using a steel tube that was 10 cm in diameter and 90 cm in length. Temperature distribution, air and water injection pressures and rates, produced gas analysis and rate, and oil and water production rates were recorded to analyze and calculate the combustion parameters. Instead of solving complex multiphase fluid flow and energy equations, an analytical model was developed based on energy balance using measured data from combustion tube experiments and basic reservoir and fluid properties. The analytical model can be used to determine the oil production from burned zone and steam zone. Calculated oil production values were successfully matched with the experimental values. Finally, the field performance was investigated by using a computer program based on the estimation of volume-burned. The program was run by changing areal sweep efficiency, pattern size and air injection rate to achieve the optimum conditions. It has been shown that the oil recovery can be increased from 3.68% to 33.4% of OOIP through this optimization.


Performance prediction of in situ combustion processes
Kök, Mustafa Verşan (Informa UK Limited, 2001-01-01)
In this research, in situ combustion performance calculations were performed using different algorithms, which were based on oil recovery/volume burned correlative methods. The correlations were based on field and laboratory combustion tube results. A computer method was developed and applied to different heavy crude oil fields. The results showed that an in situ combustion process is applicable in these fields if the volume burned is 30% for field 1 and 40% for field 2.
Modeling of underground gas storage in a depleted gas field
Gumrah, F; Izgec, O; Gokcesu, U; Bağcı, Ali Suat (Informa UK Limited, 2005-07-15)
It is possible to predict the behavior of fluids in permeable and porous medium under different operating conditions by using reservoir models. Since geological data and reservoir properties can be defined most accurately by reservoir models, it has been accepted as a reliable prediction tool among reservoir engineers. In this study, a gas reservoir has been modeled with IMEX Module of CMG Reservoir Simulator. Rock properties, gas composition and certain production data were entered to the model as input da...
Comparison of single particle combustion behaviours of raw and torrefied biomass with Turkish lignites
Magalhaes, Duarte; Panahi, Aidin; Kazanç Özerinç, Feyza; Levendis, Yiannis A. (Elsevier BV, 2019-04-01)
This study investigated the combustion behaviour of single pulverized biomass and lignite coal particles under high temperature-high heating rate conditions. Selected fuels included three important agricultural residues in Turkey (olive residue, almond shell, and hazelnut shell), and two lignite coals from the regions of Tuncbilek and Soma in Turkey. Biomass fuels were either raw or torrefied at 275 degrees C for 30 min in nitrogen. The biomass fuels were sieved to a size cut of 212-300 mu m, and the coals ...
DSC study on combustion and pyrolysis behaviors of Turkish crude oils
Kök, Mustafa Verşan (Elsevier BV, 2013-12-01)
This study focused on the investigation of non-isothermal thermal behavior and kinetics of Turkish crude oils under combustion and pyrolysis conditions using differential scanning calorimetry (DSC). On DSC combustion curves, two exothermic oxidation regions were detected known as low temperature (LTO) and high temperature oxidation (HTO). Again, two distinct reaction regions were revealed under pyrolysis conditions and DSC curves exhibited endothermic behavior for both the distillation and cracking regions....
New observations of isolated ethanol droplet flames in microgravity conditions
Park, Seul-Hyun; Choi, Seuk-Cheun; Choi, Mun Young; Yozgatlıgil, Ahmet (Informa UK Limited, 2008-01-01)
Spherically symmetric ethanol droplet combustion experiments were performed to investigate the influence of initial droplet diameter, ambient pressure and inert substitution on the burning and sooting behaviors of ethanol droplet flames. Experiments were performed using the 2.2 sec reduced-gravity droptower facilities at the NASA Glenn Research Center. Noting the importance of transport characteristics of heat and species and their attendant effects on flame temperature and residence time on the sooting mec...
Citation Formats
A. S. Bağcı, “Analytical investigation of wet combustion process for heavy oil recovery,” ENERGY SOURCES, pp. 1389–1398, 2004, Accessed: 00, 2020. [Online]. Available: