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Change of physical and thermal decomposition properties of in situ heavy oil with steam temperature
Date
1997-01-01
Author
Karacan, CO
Okandan, E
Metadata
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Ikiztepe crude oil was subjected to four different steam temperatures during steam injection which was applied as an enhanced oil recovery process on a linear limestone model saturated with oil. Produced oils were characterized using density, viscosity measurements, pyrolysis experiments utilizing TGA and elemental analysis runs. Results showed that produced crude oils change in measured characteristics as compared to the original oil. These changes include an increase in H/C, and cracking activation energy, decrease in density, viscosity and amount of residue remaining after cracking (coke). Also, decrease in asphaltene amount, changes in the elemental composition of asphaltenes and increase in the cracking activation energies were observed at 225 degrees C run. These measurements show that the produced oils get lighter and differ compositionally from the original oil as steam temperature increases. Decrease in elemental sulphur amount is one of the major changes when environmental considerations are concerned. Residual oil left in the limestone pack on the other hand shows an increase in the low temperature oxidation (LTO), fuel deposition (FD) and high temperature oxidation (HTO) activation energies as determined from TGA combustion experiments on the samples taken from the pack after steam injection experiments.
Subject Keywords
Fuel Technology
,
Geotechnical Engineering and Engineering Geology
,
Energy Engineering and Power Technology
,
General Chemistry
,
General Chemical Engineering
URI
https://hdl.handle.net/11511/64784
Journal
PETROLEUM SCIENCE AND TECHNOLOGY
DOI
https://doi.org/10.1080/10916469708949668
Collections
Petroleum Research Center (PAL), Article
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C. Karacan and E. Okandan, “Change of physical and thermal decomposition properties of in situ heavy oil with steam temperature,”
PETROLEUM SCIENCE AND TECHNOLOGY
, pp. 429–443, 1997, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/64784.