A Novel Surfactant–Polymer/Alkaline–Surfactant–Polymer Formulation for Enhanced Oil Recovery (EOR) Processes

Ramos, Galarza; Akanji, Lateef; Afzal, Waheed

doi:10.1021/acs.energyfuels.9b02275

Cited by 15 publications

(10 citation statements)

References 45 publications

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“…Typical formulations used for enhanced oil recovery have been recently reported by Ramos et al [ 30 ]. These present concentrations of polymers and surfactants range between 0.1 and 0.3% w / w and 100 and 250 mM, respectively, and in general brine is used instead of pure water, which allows fixing the ionic strength.…”

Section: Methodsmentioning

confidence: 99%

Study of the Dilution-Induced Deposition of Concentrated Mixtures of Polyelectrolytes and Surfactants

et al. 2022

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Mixtures of polyelectrolytes and surfactants are commonly used in many technological applications where the challenge is to provide well-defined modifications of the surface properties, as is the case of washing formulations in cosmetics. However, if contemporary experimental and theoretical methods can provide insights on their behavior in concentrated formulations, less is known on their behavior under practical use conditions, e.g., under dilution and vectorization of deposits. This makes it difficult to make predictions for specific performance, as, for example, good hair manageability after a shampoo or a comfortable sensorial appreciation after a skin cleanser. This is especially important when considering the formulation of new, more eco-friendly formulations. In this work, a detailed study of the phase separation process induced by dilution is described, as well as the impact on the deposition of conditioning material on negatively charged surfaces. In order to gain a more detailed physical insight, several polyelectrolyte–surfactant pairs, formed by two different polymers and five surfactants that, although non-natural or eco-friendly, can be considered as models of classical formulations, have been studied. The results evidenced that upon dilution the behavior, and hence its deposition onto the surface, cannot be predicted in terms of the behavior of simpler pseudo-binary (mixtures of a polymer and a surfactant) or pseudo-ternary mixtures (two polymers and a surfactant). In many cases, phase separation was observed for concentrations similar to those corresponding to the components in some technological formulations, whereas the latter appeared as monophasic systems. Therefore, it may be assumed that the behavior in multicomponent formulations is the result of a complex interplay of synergistic interactions between the different components that will require revisiting when new, more eco-sustainable ingredients are considered.

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Section: Methodsmentioning

confidence: 99%

Study of the Dilution-Induced Deposition of Concentrated Mixtures of Polyelectrolytes and Surfactants

et al. 2022

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“…Notably, the synergy between nano-sized crosslinked polymeric particles with low salinity water can lead to ultra-low interfacial tensions and huge (> 62 %) oil recovery [49]. In a study, the combination of poly(vinyl alcohol)-rhamonolipid and NaOH−rhamonolipid−PVA in saline EOR medium was found to significantly reduce the surface tension and IFT [50]. Similarly, a polyacrylates/amorphous carbon thin film composite recovered 19.2 % of residual oil saturation [51].…”

Section: Synergy With New Formulationsmentioning

confidence: 99%

Recent Approaches, Catalysts and Formulations for Enhanced Recovery of Heavy Crude Oils

Gaya

2021

Period. Polytech. Chem. Eng.

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Crude oil deposits as light/heavy form all over the world. With the continued depletion of the conventional crude and reserves trending heavier, the interest to maximise heavy oil recovery continues to emerge in importance. Ordinarily, the traditional oil recovery stages leave behind a large amount of heavy oil trapped in porous reservoir structure, making the imperative of additional or enhanced oil recovery (EOR) technologies. Besides, the integration of downhole in-situ upgrading along with oil recovery techniques not only improves the efficiency of production but also the quality of the produced oil, avoiding several surface handling costs and processing challenges. In this review, we present an outline of chemical agents underpinning these enabling technologies with a focus on the current approaches, new formulations and future directions.

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“…In addition, Imaoka et al prepared the PNaAMPS/PAAm double-network (DN) gel formed by the main network (2-acrylamido-2-methylpropanesulfonic acid sodium salt) (PNaAMPS) and the secondary network polyacrylamide (PAAm), in which unique mechanical-swelling coupling will promote the application of DN materials in harsh mechanical environments. Based on polyvinyl alcohol (PVA) thermal stability, salinity resistance, and biocompatibility, , Wu et al prepared a PVA/glycerol hydrogel subjected to solvent exchange and wet annealing to reconstruct the hydrogel network structure to achieve a tough, anti-fatigue hydrogel with high chain entanglements and crystallinity; the related PVA products also have certain application prospects in oilfield chemistry. − In our previous research work, a self-healing PVA composite gel was prepared, and the simulated core displacement device showed that it had better water plugging performance.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Polyvinyl Alcohol–Phenolic Aldehyde–Polyacrylamide Gel for the Application in Saline Oil Reservoirs for Profile Modification

Dong,

He,

et al. 2023

Energy Fuels

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Polymer gels are widely used in the oil and gas industry, and high-molecular-weight polymer gels have significant effects on reservoir water plugging operations. Based on nontoxic polyvinyl alcohol (PVA), its stability in solvents containing formation saltwater (Tahe oilfield, NW China) was studied, and the composite gel solution was prepared using saltwater. The polymerization mechanism of PVA with phenolic resin (PF) and polyacrylamide (PAM) was analyzed, using hexamethylenetetramine (HMTA) instead of formaldehyde for cross-linking, and the rheological properties of the prepared gel were tested; the results showed excellent elastic properties. The application value of the gel was evaluated by gelation performance, thermal stability, and indoor simulated core displacement. The gelation time of the PVA/PAM/PF gel at 130 °C was 4 h; after aging at 130 °C for 40 days, the gel strength of the polymer gel remained at the G level, and no dehydration occurred. The simulated core plugging results showed that the breakthrough pressure was 11.79 MPa and the plugging rate was 99.83%. Compared with the PAM/PF gel, the PVA/PAM/PF gel has a higher breakthrough pressure, which is beneficial to reduce the permeability of the porous medium.

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A Novel Surfactant–Polymer/Alkaline–Surfactant–Polymer Formulation for Enhanced Oil Recovery (EOR) Processes

Cited by 15 publications

References 45 publications

Study of the Dilution-Induced Deposition of Concentrated Mixtures of Polyelectrolytes and Surfactants

Study of the Dilution-Induced Deposition of Concentrated Mixtures of Polyelectrolytes and Surfactants

Recent Approaches, Catalysts and Formulations for Enhanced Recovery of Heavy Crude Oils

Investigation of Polyvinyl Alcohol–Phenolic Aldehyde–Polyacrylamide Gel for the Application in Saline Oil Reservoirs for Profile Modification

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