Precipitation and Deposition of Asphaltenes in Production Systems: A Flow Assurance Overview

Hammami, Ahmed; Ratulowski, John

doi:10.1007/0-387-68903-6_23

Cited by 97 publications

(118 citation statements)

References 43 publications

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“…[31] The polarity of asphaltenes molecules causes them to adsorb onto surfaces. [32] The adsorption of asphaltenes onto surfaces (mineral and metallic) is an undesired phenomena in the petroleum industry as it can lead to formation damage [32], wettability alteration [33], plugging of wells and flow-lines [34,35]. Several techniques have been used to study the adsorption of asphaltenes onto solid surfaces including quartz crystal microbalance (QCM) [36][37][38] and UV-vis spectroscopy [39,40].…”

Section: Introductionmentioning

confidence: 99%

Asphaltene fractionation based on adsorption onto calcium carbonate: Part 1. Characterization of sub-fractions and QCM-D measurements

Subramanian

Simon

Gao

et al. 2016

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Section: Introductionmentioning

confidence: 99%

Asphaltene fractionation based on adsorption onto calcium carbonate: Part 1. Characterization of sub-fractions and QCM-D measurements

Subramanian

Simon

Gao

et al. 2016

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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“…These surface active polar compounds are largely responsible for problems during production, transport and refining of crude oil resulting in higher production costs 2 . For example, asphaltenes can precipitate and deposit in the reservoirs, wells, pipes and other equipment 3,4,5 . They can also stabilize water-in-oil emulsions 6 (W/O) by forming a solid-like interface , or "skin" 7,8 , at the oil/water interface that hinders coalescence and retards film drainage 9,10,11 .…”

Section: Introductionmentioning

confidence: 99%

Sorption and Interfacial Rheology Study of Model Asphaltene Compounds

et al. 2016

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The sorption and rheological properties of an acidic polyaromatic compound (C5PeC11), which can be used to further our understanding in the behavior of asphaltenes, are determined experimentally. The results show that C5PeC11 exhibits the type of pH-dependent surface activity and interfacial shear rheology observed in C6-asphaltenes with a decrease in the interfacial tension concomitant to the elastic modulus when the pH increases. Surface pressure-area (Π-A) isotherms show evidence of aggregation behavior and π-π stacking at both the air/water and oil/water interfaces. Similarly, interactions between adsorbed C5PeC11 compounds are evidenced through desorption experiments at the oil/water interface. Contrary to indigenous asphaltenes, adsorption is reversible, but desorption is slower than for noninteracting species. The reversibility enables us to create layers reproducibly, whereas the presence of interactions between the compounds enables us to mimic the key aspects of interfacial activity in asphaltenes. Shear and dilatational rheology show that C5PeC11 forms a predominantly elastic film both at the liquid/air and the liquid/liquid interface. Furthermore, a soft glassy rheology model (SGR) fits the data obtained at the liquid/liquid interface. Yet, it is shown that the effective noise temperature determined from the SGR model for C5PeC11 is higher than for indigenous asphaltenes measured under similar conditions. Finally, from a colloidal and rheological standpoint, the results highlight the importance of adequately addressing the distinction between the material functions and true elasticity extracted from a shear measurement and the apparent elasticity measured in dilatational-pendant drop set-ups.

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“…Furthermore, the absorption and deposition of asphaltenes on steel surfaces would restrict oil flow in transportation pipelines (Faus et al 1984;Mochida et al 1988). The remediation of asphaltene is very costly, which limits the production design of many asphaltenic crude oil reserves (Hammami and Ratulowski 2007;Akbarzadeh et al 2012;Buckley 2012).…”

Section: Introductionmentioning

confidence: 99%

Investigation of asphaltene deposition under dynamic flow conditions

Salimi

Abdollahifar

2016

Pet. Sci.

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Asphaltene deposition is one of the most serious problems, which usually occurs in oil wells, petroleum production, oil processing, and transportation facilities. Deposition of heavy organic components, especially asphaltene, can lead to wellbore blockage and impacts well economics due to reduction in oil production. Therefore, it is necessary to pay more attention to finding some solution to overcome this problem. In this study, a pipe-loop apparatus for investigation of oil stability was employed to measure deposition thickness using a thermal method. The effects of many factors such as oil type, oil temperature, oil velocity, inhibitors, and solvents on asphaltene deposition were investigated. The results showed that the deposition increased with the increasing value of the colloidal instability index. Besides, the deposition thickness increased with the decreasing velocity of oil, but did not change with oil temperature. In addition, n-heptane could result in more deposition; however, toluene had no effect on the deposition. Branched dodecyl benzene sulfonic acid (Branched DBSA) and Linear DBSA as inhibitors decreased the rate of asphaltene deposition.

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Precipitation and Deposition of Asphaltenes in Production Systems: A Flow Assurance Overview

Cited by 97 publications

References 43 publications

Asphaltene fractionation based on adsorption onto calcium carbonate: Part 1. Characterization of sub-fractions and QCM-D measurements

Asphaltene fractionation based on adsorption onto calcium carbonate: Part 1. Characterization of sub-fractions and QCM-D measurements

Sorption and Interfacial Rheology Study of Model Asphaltene Compounds

Investigation of asphaltene deposition under dynamic flow conditions

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