2017
DOI: 10.1021/acs.energyfuels.7b00453
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Evolution of Acidic Compounds in Crude Oil during In Situ Combustion

Abstract: In situ combustion (ISC) process has drawn more and more attention in the development of heavy oil reservoirs as a result of its high recovery efficiency. Although numerous studies have been reported that oil properties exhibit significant changes during the combustion process, the reaction mechanisms and evolution of oil components are still not well understood. In this work, the compounds of produced oils collected from a three-dimensional simulated production model (container) at different duration times af… Show more

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Cited by 22 publications
(22 citation statements)
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“…The concept of DBE numbers is widely used in the research topic of the high‐resolution mass spectrometric analysis of petroleum samples, and the chemical species with identical DBE numbers but different carbon numbers are usually assumed to be the molecules with the same aromatic core but different aliphatic chains in terms of overall chain length. Different from the iso‐abundance plots of typical fossil fuel samples, there are always less than four dots at each DBE row in Figure . This indicates that there are limited aliphatic side chains (less than 4) for these PAHs in the solid soot particulates.…”
Section: Resultssupporting
confidence: 77%
“…The concept of DBE numbers is widely used in the research topic of the high‐resolution mass spectrometric analysis of petroleum samples, and the chemical species with identical DBE numbers but different carbon numbers are usually assumed to be the molecules with the same aromatic core but different aliphatic chains in terms of overall chain length. Different from the iso‐abundance plots of typical fossil fuel samples, there are always less than four dots at each DBE row in Figure . This indicates that there are limited aliphatic side chains (less than 4) for these PAHs in the solid soot particulates.…”
Section: Resultssupporting
confidence: 77%
“…Thermal enhanced oil recovery (ThEOR) methods are generally applied for heavy and extra heavy oil extraction, including steam injection, hot water flooding, in situ combustion (ISC), and so forth . The ISC technique has been given much attention recently for heavy oil recovery . ISC is the oldest member of the ThEOR family, and its effectiveness for heavy oil recovery has been proved by many economically successful field applications since the 1920s. , It is basically an air injection process into reservoirs to in situ create a combustion front to push oil to move to producers through multiple displacement of steam drive, distillation, flue gas flood, hot and cold water drive, and so forth. …”
Section: Introductionmentioning
confidence: 99%
“…On the basis of common knowledge of electrospray ionization, the N 1 species, O 1 species, and O 2 species mainly correspond to neutral nitrogen compounds, alcohols, and carboxylic acids, respectively. 38 The N 1 O 1 , N 1 O 2 , O 2 S 1 , O 3 , O 4 , and O 5 species have different functional groups but at least can be ionized by negative-ion electrospray ionization (ESI). The results indicate that the O 2 classes constitute the maximum acid portion of the heavy oil sample before and after the HTHP reaction experiment.…”
Section: Resultsmentioning
confidence: 99%