Experimental investigation of dynamic asphaltene adsorption on calcite packs: The impact of single and mixed‐salt brine films

Monjezi, Reza; Ghotbi, Cyrus; Behbahani, Taraneh Jafari; Bakhshi, Puyan

doi:10.1002/cjce.23441

Cited by 10 publications

(20 citation statements)

References 32 publications

(45 reference statements)

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“…The pH change is higher for lower initial pH values and lower salinity brines. The pH change in FW and SW is within the error bars as reported already by several researchers. ,,, …”

Section: Resultssupporting

confidence: 89%

The Simultaneous Effect of Brine Salinity and Dispersed Carbonate Particles on Asphaltene and Emulsion Stability

2023

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The oil recovery improvement by low-salinity waterflooding (LSWF) must be achieved with minimal formation damage. The asphaltic fractions of crude oil can be destabilized when in contact with incompatible injection brines resulting in organic formation damage. Due to the lack of fundamental understanding about the potential effect of rock presence on this phenomenon, in this study, the simultaneous effect of brine salinity and calcite rock presence on asphaltene instability in an emulsified system was investigated by developing a new experimental protocol. In this method, calcite rock is dispersed in different brines with total salinity ranging from 0−189,365 ppm and then mixed with oil to find the rock and brine effect on asphaltene and emulsion stability. UV−vis spectroscopy is performed on the supernatant oil phase before and after contact with brine to assess quantitatively asphaltene instability. Oil/water IFT measurements before and after contact and microscopic analysis of the water droplet size were conducted to evaluate the water/oil interface behavior. Besides, the zeta-potential for suspended calcite particles in different brines was measured to evaluate the electrokinetics of rock-oil interaction. The results show increased asphaltene instability when oil makes contact with the brine in an emulsified system. This highly depends on the brine type, and the maximum precipitation occurred at an intermediate salinity with two-times diluted seawater. While the trend of before-contact IFT and the water-in-oil emulsion size at different salinities is consistent, the UV−vis absorbance of bulk oil shows a reverse tendency with the after-contact IFT. Asphaltene deposition generally increased when solid calcite particles were present in the emulsified system, and at higher salinities, more asphaltene adsorption on the rock surface occurred due to a larger attractive force between rock and asphaltene. This trend is consistent with the results of the zeta-potential measurements. These novel findings can help avoid unrepresentative results regarding organic damage in LSWF.

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“…The pH change is higher for lower initial pH values and lower salinity brines. The pH change in FW and SW is within the error bars as reported already by several researchers. ,,, …”

Section: Resultssupporting

confidence: 89%

The Simultaneous Effect of Brine Salinity and Dispersed Carbonate Particles on Asphaltene and Emulsion Stability

2023

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“…journal published 16 articles that mention the technique. [43,48,[50][51][52][53][54][55][56][57][58][59][60][61][62][63] The hot topics in the journal relate to the oil industry including asphaltene adsorption on calcite packs, [56] improved heavy oil recovery by injecting alkaline ionic slugs (blue cluster), [54] and rheological properties for composite fluids for fracturing and in mineral processing (green cluster). [58,61] Other topics relate to nanoparticles in polymers (red cluster) and bioimaging, [43,48] drug delivery (red cluster), [50] and environmental remediation (yellow cluster).…”

Section: Applicationsmentioning

confidence: 99%

Experimental methods in chemical engineering: Zeta potential

et al. 2021

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Zeta potential (ZP) is a parameter that expresses the electrochemical equilibrium between particles and liquids like in nanoparticle (NP) colloidal solutions with applications in medicine, pharmaceuticals, chemical production, mineral processing, and water and soil purification. Smoluchowski's theory applies to the ZP particles that are larger the interfacial layer but neglects surface conductivity. The Debye-Hückel theory correctly approximates the concentration of ions in a double layer but fails to account for the dependence of ZP on the concentration of counterions. Determining ZP of NPs is essential to proper NP characterization. For instance, developing well-defined therapeutic-relevant nanoformulations needs information on NPs size, surface charge, stability and agglomeration behaviour. This approach has many practical challenges, from inadequate knowledge of operating standards to sampling, data interpretation and good laboratory practice for the experiments replicability. However, in drug delivery research, very little literature can provide a clear, succinct explanation of these techniques. Looking for specific guidelines to overcome frequently encountered problems during ZP measurements. This article explores factors influencing colloidal particle stability. Measurement criteria such as applied voltage, number of measurements, electrophoretic mobility (EPM), size distribution, surface shape, temperature, viscosity, particle concentration, zeta potential, nanoparticles, colloidal suspension, electrophoretic mobility, and pH.

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“…32 Khormali et al 33 experimentally indicated that increasing the initial concentration of asphaltene increased the adsorption onto sandstone and carbonate rocks and the presence of asphaltene inhibitors reduced the amount of asphaltene uptake. 33 Monjezi et al 34 by performing dynamic adsorption tests showed that the presence of a brine film forms a mechanical barrier between the surface of the adsorbent and asphaltenes and leads to a significant decrease in asphaltene uptake. 34 Ahooei et al 11 performed an experimental investigation and modeling of asphaltene deposition on metal surfaces and showed that the structure and composition of asphaltenes highly affected their deposition amount.…”

Section: Introductionmentioning

confidence: 99%

“…33 Monjezi et al 34 by performing dynamic adsorption tests showed that the presence of a brine film forms a mechanical barrier between the surface of the adsorbent and asphaltenes and leads to a significant decrease in asphaltene uptake. 34 Ahooei et al 11 performed an experimental investigation and modeling of asphaltene deposition on metal surfaces and showed that the structure and composition of asphaltenes highly affected their deposition amount. 11 Mohammed et al 18 studied the effect of iron minerals (pyrite, hematite, and magnetite) in increasing wettability alterations of the reservoir rock.…”

Section: Introductionmentioning

confidence: 99%

Experimental Measurement and Equilibrium Modeling of Adsorption of Asphaltenes from Various Origins onto the Magnetite Surface under Static and Dynamic Conditions

et al. 2021

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Wettability alterations, permeability reduction of reservoir rocks, and oil production decline may occur as a consequence of asphaltene adsorption and deposition on the surfaces of oil reservoir rocks. Magnetite and other iron minerals are abundant in the rock composition of sandstone reservoirs and cause problems by precipitation and adsorption of polar components of crude oil. The main purpose of this study was to investigate the adsorption of six asphaltene samples of various origins onto the magnetite surface. Characterization of magnetite was performed by Brunauer–Emmett–Teller (BET), Fourier transform infrared spectroscopy (FTIR), and X-ray fluorescence (XRF). Also, FTIR, dynamic light scattering (DLS), and elemental analysis were performed to characterize asphaltenes. Static and dynamic adsorption experiments were carried out to investigate the effects of the water phase, adsorbent size, flow rate, and asphaltene compositions on asphaltene uptake by the magnetite. The results showed that an increase in the nitrogen content and aromatic nature of asphaltenes increased their adsorption on magnetite. The addition of water to the adsorption tests significantly reduced the adsorption amount of asphaltenes on the magnetite. A considerable decrease in asphaltene adsorption was observed with an increase in the flow rate in dynamic tests. This shows that higher flow rates reduce the interaction between adsorbed asphaltenes and asphaltene aggregates in the solution, which reduces the uptake of more asphaltenes. Moreover, adsorbed asphaltene components with a weaker bond are detached from the magnetite surface, which can be attributed to the physisorption of asphaltenes. Eventually, four well-known adsorption isotherm models, namely, Langmuir, Dubinin–Radushkevich, Temkin, and Freundlich were utilized to find the mechanisms of asphaltene adsorption onto the magnetite surface. The Freundlich model seems to provide better estimates for the adsorption of asphaltenes on the magnetite surface. The findings of this study render insights into the better management of oil production in formations with iron-containing rocks.

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Experimental investigation of dynamic asphaltene adsorption on calcite packs: The impact of single and mixed‐salt brine films

Cited by 10 publications

References 32 publications

The Simultaneous Effect of Brine Salinity and Dispersed Carbonate Particles on Asphaltene and Emulsion Stability

The Simultaneous Effect of Brine Salinity and Dispersed Carbonate Particles on Asphaltene and Emulsion Stability

Experimental methods in chemical engineering: Zeta potential

Experimental Measurement and Equilibrium Modeling of Adsorption of Asphaltenes from Various Origins onto the Magnetite Surface under Static and Dynamic Conditions

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