Comparing asphaltenes: Deposit versus crude oil

Rogel, Estrella; Miao, Toni; Vien, Janie; Roye, Michael

doi:10.1016/j.fuel.2015.01.045

Cited by 50 publications

(56 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this Figure, a fraction distribution obtained previously 17 for an upstream deposit is presented as a reference. As it can be seen, asphaltene fraction # 3 is the most abundant in all the cases, except for HCOVR.…”

Section: Resultsmentioning

confidence: 99%

Characterization of Asphaltene Fractions: Distribution, Chemical Characteristics, and Solubility Behavior

et al. 2015

Self Cite

View full text Add to dashboard Cite

In this work, we present a series of correlations between physical and chemical properties of asphaltenes based on extensive characterization of asphaltene solubility fractions from diverse origins. Additionally, an effort is made to identify the key chemical/molecular characteristics that make materials prone to asphaltene precipitation. It was found that high hydrogen deficiencies and uneven asphaltene fraction distributions are main contributors to asphaltene instability.The correlations found among asphaltene properties indicate that it is possible to estimate some of these properties using the solubility profile as a unique test. In particular, this technique can provide good solubility parameter estimates without preparative isolation of the asphaltenes and,-besides providing average values-, it can also give solubility parameter distribution which might be useful in considering asphaltene polydispersity for modeling purposes. The main advantage of this test is that it does not require previous separation of the asphaltenes.

show abstract

Section: Resultsmentioning

confidence: 99%

Characterization of Asphaltene Fractions: Distribution, Chemical Characteristics, and Solubility Behavior

et al. 2015

Self Cite

View full text Add to dashboard Cite

show abstract

“…Asphaltenes, as the most mysterious fraction in petroleum, have had their properties studied for decades. The bulk properties of asphaltenes, such as element content, density, and thermogravimetric analysis, are nowadays well-known and can be readily determined via correlative analytical instruments [21,22]. A more comprehensive understanding of asphaltenes requires the utilization of specialized analysis methods.…”

Section: Analytical Techniques For Asphaltene Propertiesmentioning

confidence: 99%

“…The preferentially ionized most aromatic molecules indicated that these techniques may be suitable for studying the most troublesome molecules in petroleum, which are less soluble and contain a heteroatomic functional group [73]. In addition, a deposit sample from an oilfield produced by CO 2 flooding was fractionated and compared with heptane asphaltenes extracted from the corresponding crude oil [21]. Results revealed that asphaltenes present in the deposit had lower solubility and higher aromaticity than those of heptane asphaltene extracted from crude oil, which suggested that heptane asphaltene may not be the best choice for the kinetic/thermodynamic modeling of this phenomenon.…”

Section: Sequential Elution Fractionation (Sef)mentioning

confidence: 99%

Fractionation and Characterization of Petroleum Asphaltene: Focus on Metalopetroleomics

et al. 2020

View full text Add to dashboard Cite

Asphaltenes, as the heaviest and most polar fraction of petroleum, have been characterized by various analytical techniques. A variety of fractionation methods have been carried out to separate asphaltenes into multiple subfractions for further investigation, and some of them have important reference significance. The goal of the current review article is to offer insight into the multitudinous analytical techniques and fractionation methods of asphaltene analysis, following an introduction with regard to the morphologies of metals and heteroatoms in asphaltenes, as well their functions on asphaltene aggregation. Learned lessons and suggestions on possible future work conclude the present review article.

show abstract

“…Quantitative analysis is usually based on the proportionality between signal integrated areas and the content of compound of particular group in IR spectra. E. Rogel compared the asphaltene fractions by normalizing against the aliphatic stretch signal on condition of unchanged extinction coefficient to obtain concentrations of the function groups [141,163] . Vibrational spectra of asphaltene were determined by the characteristic band at 1600 cm -1 with electronic structure means [164] .…”

Section: Infrared Spectroscopy (Ir) and Near-infrared (Nir) Spectroscopymentioning

confidence: 99%

Asphaltenes: Separations, structural analysis and applications

Zuo

Shen

2019

Journal of Energy Chemistry

126

View full text Add to dashboard Cite

Comparing asphaltenes: Deposit versus crude oil

Cited by 50 publications

References 27 publications

Characterization of Asphaltene Fractions: Distribution, Chemical Characteristics, and Solubility Behavior

Characterization of Asphaltene Fractions: Distribution, Chemical Characteristics, and Solubility Behavior

Fractionation and Characterization of Petroleum Asphaltene: Focus on Metalopetroleomics

Asphaltenes: Separations, structural analysis and applications

Contact Info

Product

Resources

About