Dynamic Adsorption of Functionalized Zwitterionic Copolymers on Carbonate Surfaces under Extreme Reservoir Conditions

Kawelah, Mohammed; He, Yaqun; Alamri, Haleema; Gizzatov, Ayrat; Swager, Timothy M.; Zhu, Shifan

doi:10.1021/acs.energyfuels.0c01423

Cited by 7 publications

(9 citation statements)

References 32 publications

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“…This character has great implications in scaling-up SAM coatings for industrial applications since fluorinated molecules are usually much more expensive compared to the simple hydrophilic alkanols. Reducing the usages of expensive fluorinated molecules while maintaining the desired properties of the SAMs provide immense economic advantages 34 , 35 .…”

Section: Discussionmentioning

confidence: 99%

Controlling water-mediated interactions by designing self-assembled monolayer coatings

Chen

Zhu

2021

Sci Rep

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Engineered nanoparticles have been broadly used in biological and geological systems. Hydrophilic molecules such as polyols have been used as coatings on nanoparticle surfaces due to their good biocompatibility and solubility in saline water. However, polyol coatings can cause huge retention of nanoparticles when encountering mineral surfaces. Here, molecular dynamics simulations enlightened that the strong adhesion of hydrophilic coatings to mineral surfaces stemming from the partitioning of the hydroxy groups on the hydrophilic molecules to the well-defined bound hydration layers on the mineral surfaces. To mitigate the nanoparticle adhesion, we investigated introducing small percentages of omniphobic fluoroalkanes to form a bicomponent system of hydrophilic and fluoroalkanes, which greatly perturbed the hydration layers on mineral surfaces and resulted in nonstick surface coatings. Our results provide important insight for the design of tunable “stickiness” nanoparticle coatings in different mineralogies, such as applications in subsurface environments or targeted delivery in mineralized tissues.

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Section: Discussionmentioning

confidence: 99%

Controlling water-mediated interactions by designing self-assembled monolayer coatings

Chen

Zhu

2021

Sci Rep

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“…they govern the solvent quality and whether the polymer chain swells or shrinks. 47,48,51,53 Solvent quality is also a function of brine ionic charge and strength. 48,54−56 A low electrolyte (or brine) concentration enhances the repulsive charges between the monomers and therefore an anionic polymer swells and also reduces the anionic polymer/positively charged rock adsorption.…”

Section: Polymer Adsorptionmentioning

confidence: 99%

“…Polymers (as RPMs) should be nominated based on their ability to show strong attractive interactions with the rock surface to maximize adsorption, stability, and irreversibility. Rock–polymer interactions are (1) van der Waals interactions (dispersion), which are usually attractive and are governed by polymer structure/molecular weight, and (2) electrostatic interactions, which can be attractive or repulsive); these exist at the interfaces of rock/brine and brine/polymer. − The total interaction, i.e. the sum of van der Waals and electrostatic interactions (DLVO), is defined by the prevailing physicochemical conditions .…”

Section: Polymer Adsorptionmentioning

confidence: 99%

“…Both interactions (i.e., van der Waals and electrostatic interactions) also govern the interactions between polymer monomers (or in general fluid–fluid), i.e. they govern the solvent quality and whether the polymer chain swells or shrinks. ,,, Solvent quality is also a function of brine ionic charge and strength. ,− A low electrolyte (or brine) concentration enhances the repulsive charges between the monomers and therefore an anionic polymer swells and also reduces the anionic polymer/positively charged rock adsorption . On the other hand, if the electrolyte concentration increases (i.e., solvent quality is poorer), anionic polymers shrink/contract and increase the polymer–rock adsorption …”

Section: Polymer Adsorptionmentioning

confidence: 99%

“…Polymers increase the viscosity of the injected water and thereby control fluid mobility and enhance the displacement and the volumetric sweep efficiency. However, significant polymer adsorption on the rock surface can reduce the efficiency of the polymer flooding due to reducing polymer viscosity because of polymer loss, limiting the propagation through the reservoir and consequently the hydrocarbon relative permeability may reduce. ,,− On the contrary, in water shut-off or relative permeability modification (RPM) applications, the purpose is to have enough adsorption. Therefore, these two oil/gas field applications (i.e., the EOR and water shut-off) require different adsorption characteristics.…”

Section: Polymer Adsorptionmentioning

confidence: 99%

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Rock/Fluid/Polymer Interaction Mechanisms: Implications for Water Shut-off Treatment

et al. 2021

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Several disproportionate permeability reduction (DPR) mechanisms have been proposed in the literature for water shutoff treatment using polymer relative permeability modifiers (RPM). However, none appear to be universally accepted. The lack of agreement may be because no single factor determines the success of DPR treatment. Moreover, there is still a lack of understanding of DPR mechanisms and the order of how these mechanisms work together. This paper provides a comprehensive review of the mechanisms behind the RPMs. We identify that sufficient polymer adsorption onto the rock surface is a primary condition for water shutoff treatment, while rock surface initial wettability and fluid−polymer−rock interaction/attraction plays a significant role in polymer adsorption. Furthermore, polymer concentration, polymer molecular weight, aging time, polymer injection volume, polymer injection rate, and reservoir temperature are also vital for polymer adsorption. After polymer adsorption, the mechanisms such as fluid segregation and wall effect help accomplish the required DPR. We also find that there is a more consistent agreement among the published studies on the order of DPR mechanisms e.g. initial rock wettability effect comes first, followed by initial segregation, adsorption wall effect (i.e., steric, lubrication, wettability alteration, and swelling/shrinkage), and then the final segregation. Depending on the RPM implementation, which depends on pore size, the polymer layer thickness can be adjusted after the placement permanently or temporarily by controlling swelling/shrinkage. The subject matter investigated in this review helps us understand the factors responsible for optimal performance of polymer solutions in controlling excess water production from hydrocarbon reservoirsthus assisting in more efficient oil/gas production.

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Dynamics of Polymers Flowing through Porous Media: Interplay of Solvent Properties, Flow Rates, and Wetting

Chen

Poitzsch

2022

Macromolecules

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Polymer transport in porous media controls many important industrial and technological applications. Using molecular simulations with fully coupled hydrodynamic interactions, we have previously studied the dynamics of polymers flowing through purely repulsive model porous media. The most prominent observation is the emerging of slow dynamics for the collapsed polymers at low flow rate, where the polymer transport is controlled by a globule–stretch transition at pore throats. In this work, we extend our previous work by including the wetting effect, i.e., the polymer–porous media interactions, which are ubiquitous in all realistic conditions. At high flow rate, the hydrodynamic drag forces can overcome the wetting interactions, and the polymer dynamics is like those without wetting interactions. On the other hand, at low flow rate, including polymer wetting results in rich nonmonotonic polymer transport dynamics: Weak polymer wetting in fact facilitates the polymer transport through porous media by converting 3D compact polymer globules into quasi-2D morphologies that can pass through the narrow pore throats more easily. In contrast, strong polymer wetting reduces the polymer transport especially for shorter chains, where the hydrodynamic drags are unable to pull the small polymer globules away from the porous media surfaces. To the best of our knowledge, this is the first comprehensive study showing the dynamics of polymers flowing through porous media with effects from the combinations of flow rates, solvent properties, and wetting interactions. We believe the results put forward in this study are important in understanding the fundamental nonequilibrium polymer dynamics in constraints as well as with practical implications for using polymers in subsurface applications and (bio)macromolecular separation technologies.

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Dynamic Adsorption of Functionalized Zwitterionic Copolymers on Carbonate Surfaces under Extreme Reservoir Conditions

Cited by 7 publications

References 32 publications

Controlling water-mediated interactions by designing self-assembled monolayer coatings

Controlling water-mediated interactions by designing self-assembled monolayer coatings

Rock/Fluid/Polymer Interaction Mechanisms: Implications for Water Shut-off Treatment

Dynamics of Polymers Flowing through Porous Media: Interplay of Solvent Properties, Flow Rates, and Wetting

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