Experimental investigation of multi-walled carbon nanotubes assisted surfactant/polymer flooding for enhanced oil recovery

Razavinezhad, Javad; Jafari, Arezou; Elyaderani, Seyed Masoud Ghalamizade

doi:10.1016/j.petrol.2022.110370

Cited by 16 publications

(21 citation statements)

References 27 publications

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“…Based on the obtained values, the patterns of pressure distribution to the pressure sensor throughout the reservoir through the Q cp and the dependencies of the Q cp output and pressure were established (Figs. 9,10).…”

Section: The Solution To This Equation Is Expressed By Thementioning

confidence: 99%

“…As is known, some zones with high oil saturation, close to the initial oil content in the reservoir, the so-called oil pillars, remain in the reservoir. To extract oil from pillars, the development system is changed [7,8] or spot and selective waterflooding is used [9,10].…”

mentioning

confidence: 99%

“…inside the circle and satisfying the boundary condition Р = f = = Р c on the boundary (along the circumference) of the circle, where Р c is the pressure value at the boundary. This corresponds to the interior Dirichlet problem for a circle, well developed in mathematical physics [10,12].…”

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confidence: 99%

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Pressure distribution in the oil reservoir in a two-dimensional plane

Moldabayeva¹,

Imansakipova²,

Suleimenova³

et al. 2023

Nauk. visn. nat. hirn. univ.

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Purpose. Establishment of regularities of variability of pressure dynamics in the reservoir and development on this basis of methods of control and regulation of hydrocarbon production. Methodology. To achieve this goal, experimental studies were conducted, and the results of the experiments were summarized. Findings. Pressure distribution functions for stationary fluid inflow in two planes have been established, which allow monitoring and management of mining operations, especially at late stages of development. Originality. Based on the established regularities, a model of pressure distribution in the reservoir in a two-dimensional plane has been created. An experimental study of the pressure distribution in the reservoir was carried out, which allowed us to remove the characteristics of the pressure distribution along the axis of the segment of the oil reservoir under varying boundary conditions. Practical value. A mathematical model of pressure distribution processes along the angle of inclination is proposed, which allows determining the effectiveness of flooding. The influence of the deformability of the formation, the location of the well relative to its impenetrable roof and sole, the length of the horizontal trunk and the power of the opened formation on the magnitude and intensity of the inflow to the horizontal well is estimated.

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Section: The Solution To This Equation Is Expressed By Thementioning

confidence: 99%

mentioning

confidence: 99%

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Pressure distribution in the oil reservoir in a two-dimensional plane

Moldabayeva¹,

Imansakipova²,

Suleimenova³

et al. 2023

Nauk. visn. nat. hirn. univ.

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“…30,35−39 Moreover, the interaction of injected carbon-nanotube nanofluids with acidic oil results in the formation of in situ surfactants, aiding in the mobilization of trapped oil by reducing the capillary pressure in the rock pores. 32 Specifically, Razavinezhad et al 34 recently reported that, although the surfactant-polymer solution reduced the contact angles of oil-wet glass from 143.6 to 24°, the contact angle reduced to zero, and the oil recovery increased by 5−11% in carbon nanotube-surfactant solutions. Li et al 36 found that durable foam was formed by the synergy of the SDBS and hydroxylated MWCNTs due to the adsorption of the surfactant-modified hydroxylated MWCNTs at the foam lamellae.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Computational Fluid Dynamics Investigation of Mechanisms of Enhanced Oil Recovery via Nanoparticle-Surfactant Solutions

et al. 2023

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The enhancement in surfactant performance at downhole conditions in the presence of nanomaterials has fascinated researchers’ interest regarding the applications of nanoparticle-surfactant (NPS) fluids as novel enhanced oil recovery (EOR) techniques. However, the governing EOR mechanisms of hydrocarbon recovery using NPS solutions are not yet explicit. Pore-scale visualization experiments clarify the dominant EOR mechanisms of fluid displacement and trapped/residual oil mobilization using NPS solutions. In this study, the influence of multiwalled carbon nanotubes (MWCNTs), silicon dioxide (SiO2), and aluminum oxide (Al2O3) nanoparticles on the EOR properties of a conventional surfactant (sodium dodecyl benzene sulfonate, SDBS) was investigated via experimental and computational fluid dynamics (CFD) simulation approaches. Oil recovery was reduced with increased temperatures and micromodel heterogeneity. Adding nanoparticles to SDBS solutions decreases the fingering and channeling effect and increases the recovery factor. The simulation prediction results agreed with the experimental results, which demonstrated that the lowest amount of oil (37.84%) was retained with the micromodel after MWCNT-SDBS flooding. The oil within the micromodel after Al2O3-SDBS and SiO2-SDBS flooding was 58.48 and 43.42%, respectively. At 80 °C, the breakthrough times for MWCNT-SDBS, Al2O3-SDBS, and SiO2-SDBS displacing fluids were predicted as 32.4, 29.3, and 21 h, respectively, whereas the SDBS flooding and water injections at similar situations were at 12.2 and 6.9 h, respectively. The higher oil recovery and breakthrough time with MWCNTs could be attributed to their cylindrical shape, promoting the MWCNT-SDBS orientation at the liquid–liquid and solid–liquid interfaces to reduce the oil–water interfacial tension and contact angles significantly. The study highlights the prevailing EOR mechanisms of NPS.

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“…More satisfactorily, NPs can significantly improve the oil recovery at quite a low concentration, which made it more considerable in economic cost. , Therefore, optimization study on the synthetic process to make the nanofluid more operable and economical as well as mechanism study in the oil displacement stage has always been the research focus in the EOR field. For example, carbon nanotubes (CNT) can assist the surfactant/polymer to improve the oil displacement efficiency . Graphite oxide particles with decoration of the polymer opened a great opportunity in enhancing oil recovery under harsh conditions .…”

Section: Introductionmentioning

confidence: 99%

Effect of the SiO₂ Nanoparticle Size on Application of Enhanced Oil Recovery in Medium-Permeability Formations

Zhou

Jiang

et al. 2023

Energy Fuels

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Nanoparticles (NPs) have been applied in enhanced oil recovery (EOR) successfully over the last couple of decades, due to their unique property inherited by the small size (most of the studies focused on sizes smaller than 50 nm) and abundant surface functional groups. The important mechanism of EOR using a NP-based nanofluid is the change of interfacial properties. However, the effect of the nanoparticle size on the same type of oil recovery has not been systematically studied, especially the larger size. Therefore, in this research, SiO 2 NPs of different sizes, namely, ∼60, ∼100, ∼200, and ∼300 nm, were synthesized using the Stober method and the properties of the NP-based nanofluids were investigated, including interfacial tension (IFT), contact angle, viscosity, capillary pressure, and the ability to extract oil. The experimental results showed that as the SiO 2 NP size decreased, there was a little increase in the IFT, oil contact angle, viscosity, and capillary pressure. With a NP concentration of 0.3 wt % in 3 wt % NaCl brine, the ∼60 nm SiO 2 NP-based nanofluid was the most efficient oil-displacing agent to recover oil from the mediumpermeability core sample of Daqing Oilfield. Therefore, according to the discussion of the selective preference for SiO 2 NP sizes, the developed nanofluid is a promising new material in medium-permeability reservoirs for enhanced oil recovery.

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Experimental investigation of multi-walled carbon nanotubes assisted surfactant/polymer flooding for enhanced oil recovery

Cited by 16 publications

References 27 publications

Pressure distribution in the oil reservoir in a two-dimensional plane

Pressure distribution in the oil reservoir in a two-dimensional plane

Experimental and Computational Fluid Dynamics Investigation of Mechanisms of Enhanced Oil Recovery via Nanoparticle-Surfactant Solutions

Effect of the SiO₂ Nanoparticle Size on Application of Enhanced Oil Recovery in Medium-Permeability Formations

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Experimental investigation of multi-walled carbon nanotubes assisted surfactant/polymer flooding for enhanced oil recovery

Cited by 16 publications

References 27 publications

Pressure distribution in the oil reservoir in a two-dimensional plane

Pressure distribution in the oil reservoir in a two-dimensional plane

Experimental and Computational Fluid Dynamics Investigation of Mechanisms of Enhanced Oil Recovery via Nanoparticle-Surfactant Solutions

Effect of the SiO2 Nanoparticle Size on Application of Enhanced Oil Recovery in Medium-Permeability Formations

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Effect of the SiO₂ Nanoparticle Size on Application of Enhanced Oil Recovery in Medium-Permeability Formations