Development of an Asphaltene Deposit Cleaning Technology Using a QCMB Technique

Crude oil (dead oil, or oil that has lost its gaseous components) is typically characterized in terms of its composition of saturates, aromatics, resins, and asphaltenes (SARA) via laboratory methods for such general fractionation.1 Correspondingly, asphaltenes are the components of crude oil that a...

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Bibliographic Details
Published inNACE International Corrosion Conference Proceedings pp. 1 - 10
Main Authors Janak, Kevin E, Colby, Steven, Bertrand, Tre, Fontenot, Brittany
Format Conference Proceeding
LanguageEnglish
Published Houston NACE International 01.01.2019
Subjects
Alkanes
Aromatic hydrocarbons
Asphaltenes
Chemical precipitation
Crude oil
Depolarization
Fluorescence
Fractionation
Heptanes
Hydrocarbons
Laboratories
Liquid chromatography
Mass spectrometry
Molecular diffusion
Molecular weight
NMR
Nuclear magnetic resonance
Photon correlation spectroscopy
Resonance scattering
Scientific imaging
Solvents
Toluene
X-ray scattering
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Summary:Crude oil (dead oil, or oil that has lost its gaseous components) is typically characterized in terms of its composition of saturates, aromatics, resins, and asphaltenes (SARA) via laboratory methods for such general fractionation.1 Correspondingly, asphaltenes are the components of crude oil that are insoluble in n-alkanes such as pentane or heptane but soluble in aromatic hydrocarbons such as toluene or xylenes.2 A wide range of techniques have been used to study asphaltenes in attempts to characterize them chemically and structurally as part of the overall field of petroleomics. Analytical methods include mass spectrometry, electron microscopy, nuclear magnetic resonance, small-angle neutron and X-ray scattering, ultrasonic spectroscopy, multi-angle dynamic light scattering, fluorescence correlation spectroscopy, fluorescence depolarization, vapor-pressure osmometry, and gel permeation chromatography.3'4'5'6'7'8'9'10'11 Overall, mass spectrometry and molecular diffusion experiments have produced the most consistent data for the estimation of asphaltene molecular weight and size. [...]researchers have sought to develop new techniques not only to understand the conditions by which asphaltenes may deposit, but also to evaluate chemistries to either inhibit their precipitation or remediate existing deposits. [...]inhibition is not complete inhibition but a delay in the kinetics of deposition.