“Sticky molecules” on rock surface might play an important role in formation damage due to asphaltene deposition

Zeng, Huang; Tessarolo, Nathalia; González, Doris L.; Gramin, Pavel; Wicking, Chrissie; Pietrobon, Marney

doi:10.1016/j.fuel.2020.117983

Cited by 12 publications

(4 citation statements)

References 36 publications

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“…The situation is complicated by the fact that many such oils (crude oils) are enclosed and stored in both inorganic and organic pores with sizes from 1 to hundreds of nanometers. , Under conditions of such strong confinement, surface phenomena − and the interaction of fluid components with a solid matrix cause dramatic deviations in wettability properties and flow behavior compared to conventional reservoirs. − In addition, significant difficulties are caused by the heterogeneous chemical composition of oil and gas condensates. Namely, the polar components contained in the fluid can be significantly adsorbed on the surface, , which complicates the development of deposits and can even cause blockage of pore channels . One of the most relevant examples is the phenomenon of precipitation of asphaltenes from crude oil. − …”

Section: Influence Of Competitive Adsorption On Multicomponent Flowsmentioning

confidence: 99%

“…212−217 In addition, significant difficulties are caused by the heterogeneous chemical composition of oil and gas condensates. Namely, the polar components contained in the fluid can be significantly adsorbed on the surface, 218,219 which complicates the development of deposits and can even cause blockage of pore channels. 220 One of the most relevant examples is the phenomenon of precipitation of asphaltenes from crude oil.…”

Section: Influence Of Competitive Adsorption On Multicomponent Flowsmentioning

confidence: 99%

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Wettability Alteration in Gas Condensate Reservoirs: A Critical Review of the Opportunities and Challenges

Kazemi,

Khlyupin,

Azin

et al. 2024

Energy Fuels

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The gas condensate reservoir is classified as a natural gas resource that produces condensate liquid in the reservoir when the pressure in the reservoir drops below the dew point. An innovative strategy to address condensate blockage near the wellbore involves modifying the wettability of the surface of the reservoir rock. This is achieved through chemical treatment, transitioning the surface from a state of strong liquid-wetting to either strong or intermediate gas-wetting. This modern approach effectively mitigates condensate blockage and its associated challenges. Adjusting and sustaining wettability conditions within gas reservoirs requires proper chemicals for a certain reservoir condition. The paper presents a thorough review of wettability and the processes involved in wettability alteration specifically in gas condensate reservoirs. Then, the commonly used wettability alteration chemicals along with their induced flow mechanisms are discussed and reviewed together with a molecular modeling point of view on modern problems of wetting and interfacial phenomena. This paper also focuses on using nanoparticles and fluorochemicals as wettability alteration agents, given that fluorinated nanoparticles are allegedly superior to the chemical wettability altering agents as they change the wettability of the rock surface by modifying both surface energy and surface roughness. This Review indicates the promising use of various nanoparticles along with fluoro materials to enhance ultimate hydrocarbon recovery in gas condensate reservoirs. In the next part, molecular dynamic simulation of imbibition of n-alkanes in kerogen organic slits are presented. The influence of competitive adsorption on multicomponent flows of crude oil and wetting transition on surfaces with molecular roughness are discussed. Actual problems and challenges of molecular modeling methods are also presented.

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Section: Influence Of Competitive Adsorption On Multicomponent Flowsmentioning

confidence: 99%

Section: Influence Of Competitive Adsorption On Multicomponent Flowsmentioning

confidence: 99%

Wettability Alteration in Gas Condensate Reservoirs: A Critical Review of the Opportunities and Challenges

Kazemi,

Khlyupin,

Azin

et al. 2024

Energy Fuels

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“…This severely compromises the efficiency of oil production [ 9 , 10 ]. The deposition of asphaltenes in the ground oil pipeline limits the flow in the pipeline and even clogs the pipeline, which also reduces the efficiency of oil transportation [ 11 , 12 ]. Asphaltene is also adsorbed on the refining unit, which leads to coking, equipment corrosion, and catalyst pollution [ 13 ].…”

Section: Introductionmentioning

confidence: 99%

Research Progress in Nanoparticle Inhibitors for Crude Oil Asphaltene Deposition

Yang,

Yan,

Cai

et al. 2024

Molecules

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Currently, the alteration of external factors during crude oil extraction easily disrupts the thermodynamic equilibrium of asphaltene, resulting in the continuous flocculation and deposition of asphaltene molecules in crude oil. This accumulation within the pores of reservoir rocks obstructs the pore throat, hindering the efficient extraction of oil and gas, and consequently, affecting the recovery of oil and gas resources. Therefore, it is crucial to investigate the principles of asphaltene deposition inhibition and the synthesis of asphaltene inhibitors. In recent years, the development of nanotechnology has garnered significant attention due to its unique surface and volume effects. Nanoparticles possess a large specific surface area, high adsorption capacity, and excellent suspension and catalytic abilities, exhibiting unparalleled advantages compared with traditional organic asphaltene inhibitors, such as sodium dodecyl benzene sulfonate and salicylic acid. At present, there are three primary types of nanoparticle inhibitors: metal oxide nanoparticles, organic nanoparticles, and inorganic nonmetal nanoparticles. This paper reviews the recent advancements and application challenges of nanoparticle asphaltene deposition inhibition technology based on the mechanism of asphaltene deposition and nano-inhibitors. The aim was to provide insights for ongoing research in this field and to identify potential future research directions.

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“…The IAA fraction has a greater tendency to aggregate even in good solvents and forms nanoaggregates and clusters that are larger and more porous than those formed by RA. It is worth noting that the IAA fraction is ∼2 wt % of WA and so is considered to be a minor fraction; however, many flow assurance issues such as deposition and emulsion stabilization are likely caused by this minor but significant fraction. , And so, the influence of this minor fraction on the properties of waxy fluids warrants further investigation, as to date little is known about how this strongly interfacially active asphaltene behaves in waxy fluids.…”

Section: Introductionmentioning

confidence: 99%

The Contrasting Behavior of Strongly and Weakly Interfacially Active Asphaltenes on the Rheology of Model Waxy Oils

Ali,

Yaghy,

Parameswaran

et al. 2023

Energy Fuels

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Asphaltenes and waxes are two components of crude oil that cause flow assurance issues. Although the components coexist, few studies have considered the effect of asphaltenes on wax crystallization and gel-forming properties. Furthermore, the current understanding remains contradictory with both wax-alleviating and wax-aggravating behaviors observed. In this study, asphaltenes extracted from a heavy crude oil were fractionated into strongly and weakly interfacially active asphaltenes by partitioning at a water−oil interface. The two asphaltene fractions exhibited contrasting physicochemical properties, with the strongly interfacially active asphaltenes (IAA) being more polar due to their higher heteroatom content (particularly S and O) and forming larger aggregates in the solution compared to the weakly interfacially active asphaltenes (referred to as remaining asphaltenes, RA). The two asphaltene fractions lowered both the wax gelation temperature and wax appearance temperature; however, the effect was comparable. The unit cell lattice structure of the wax particle remained unchanged in the presence of asphaltenes, but the wax particles were found to be smaller with RA compared to IAA. However, the key finding of the study is how the two asphaltene fractions affected the yield strength of the gelled wax. For RA, the yield strength was lowered with an increasing asphaltene concentration, whereas for IAA, the overall effect was to increase the gel yield strength. Because the properties of the wax particles were largely unchanged by the two asphaltene fractions, the result suggests that the asphaltene−asphaltene interaction contributes to the overall yield strength. It was shown that the interaction between RA and RA is repulsive with negligible adhesion, whereas that between IAA and IAA is attractive with strong adhesion. These structurebreaker and structure-maker properties of the two asphaltenes confirm that the asphaltene−asphaltene interaction significantly contributes to modifying the yield strength of a waxy gel.

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“Sticky molecules” on rock surface might play an important role in formation damage due to asphaltene deposition

Cited by 12 publications

References 36 publications

Wettability Alteration in Gas Condensate Reservoirs: A Critical Review of the Opportunities and Challenges

Wettability Alteration in Gas Condensate Reservoirs: A Critical Review of the Opportunities and Challenges

Research Progress in Nanoparticle Inhibitors for Crude Oil Asphaltene Deposition

The Contrasting Behavior of Strongly and Weakly Interfacially Active Asphaltenes on the Rheology of Model Waxy Oils

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