Abstract
Carbon dioxide (CO2) injection has been used as a commercial process for enhanced oil recovery (EOR) since the 1970's. Recently, a new in-situ CO2 gas generation technology has been developed but not well studied. We conducted experiments to observe the dynamics of the system with different temperatures, injection sequences of chemical agents, chemical additives, and behavior of CO2 generation with respect to these varying factors and comparison of the actual CO2 pressure with the calculated values. Experiments on generation of CO2 gas as a result of reactions of gas forming and gas yielding solutions were carried out. It is shown that the injection sequence of the chemicals affects the reaction characteristics, but the total amount of CO2 gas generated does not vary significantly. Regardless of the injected solution (either gas forming or gas yielding) the maximum attainable pressures are less than the calculated pressures as a result of chemical equilibrium in the system; so this difference should be considered while calculating the size of the slug in the field applications. The brine concentration has an impact on CO2 solubility in water and so on CO2 pressure. Because of this impact, brine concentration of formation water should be considered in addition to the brine which is introduced to the system by the reaction.
| Original language | English |
|---|---|
| Pages | 887-894 |
| Number of pages | 8 |
| DOIs | |
| Publication status | Published - 2006 |
| Event | 2006 ASME International Mechanical Engineering Congress and Exposition, IMECE2006 - Chicago, IL, United States Duration: Nov 5 2006 → Nov 10 2006 |
Other
| Other | 2006 ASME International Mechanical Engineering Congress and Exposition, IMECE2006 |
|---|---|
| Country | United States |
| City | Chicago, IL |
| Period | 11/5/06 → 11/10/06 |
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All Science Journal Classification (ASJC) codes
- Engineering(all)
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The effect of salinity on in-situ generated CO2 gas : Simulations and experiments. / Coskun, Onur; Svec, Robert; Siginer, Dennis; Grigg, Reid; Bakhtiyarov, Sayavur I.
2006. 887-894 Paper presented at 2006 ASME International Mechanical Engineering Congress and Exposition, IMECE2006, Chicago, IL, United States.Research output: Contribution to conference › Paper
TY - CONF
T1 - The effect of salinity on in-situ generated CO2 gas
T2 - Simulations and experiments
AU - Coskun, Onur
AU - Svec, Robert
AU - Siginer, Dennis
AU - Grigg, Reid
AU - Bakhtiyarov, Sayavur I.
PY - 2006
Y1 - 2006
N2 - Carbon dioxide (CO2) injection has been used as a commercial process for enhanced oil recovery (EOR) since the 1970's. Recently, a new in-situ CO2 gas generation technology has been developed but not well studied. We conducted experiments to observe the dynamics of the system with different temperatures, injection sequences of chemical agents, chemical additives, and behavior of CO2 generation with respect to these varying factors and comparison of the actual CO2 pressure with the calculated values. Experiments on generation of CO2 gas as a result of reactions of gas forming and gas yielding solutions were carried out. It is shown that the injection sequence of the chemicals affects the reaction characteristics, but the total amount of CO2 gas generated does not vary significantly. Regardless of the injected solution (either gas forming or gas yielding) the maximum attainable pressures are less than the calculated pressures as a result of chemical equilibrium in the system; so this difference should be considered while calculating the size of the slug in the field applications. The brine concentration has an impact on CO2 solubility in water and so on CO2 pressure. Because of this impact, brine concentration of formation water should be considered in addition to the brine which is introduced to the system by the reaction.
AB - Carbon dioxide (CO2) injection has been used as a commercial process for enhanced oil recovery (EOR) since the 1970's. Recently, a new in-situ CO2 gas generation technology has been developed but not well studied. We conducted experiments to observe the dynamics of the system with different temperatures, injection sequences of chemical agents, chemical additives, and behavior of CO2 generation with respect to these varying factors and comparison of the actual CO2 pressure with the calculated values. Experiments on generation of CO2 gas as a result of reactions of gas forming and gas yielding solutions were carried out. It is shown that the injection sequence of the chemicals affects the reaction characteristics, but the total amount of CO2 gas generated does not vary significantly. Regardless of the injected solution (either gas forming or gas yielding) the maximum attainable pressures are less than the calculated pressures as a result of chemical equilibrium in the system; so this difference should be considered while calculating the size of the slug in the field applications. The brine concentration has an impact on CO2 solubility in water and so on CO2 pressure. Because of this impact, brine concentration of formation water should be considered in addition to the brine which is introduced to the system by the reaction.
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U2 - 10.1115/IMECE2006-15703
DO - 10.1115/IMECE2006-15703
M3 - Paper
SP - 887
EP - 894
ER -