Introducing Core-Shell Technology for Conformance Control

Verga, Francesca; Lombardi, Mariangela; Maddinelli, G.; Montanaro, Laura

doi:10.2516/ogst/2016025

Cited by 9 publications

(8 citation statements)

References 65 publications

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“…More details regarding this phenomenon will be discussed in Section 2.8. Verga et al (2017) reported that core-shell nanoparticle technology can be highly beneficial to improve the effectiveness of waterflooding interventions when the presence of different permeability zones strongly affects oil displacement. One of the possible mechanisms might be the increase in water viscosity by injecting a water dispersion of nanocapsules through gelation or aggregation.…”

Section: Increase In the Viscosity Of Aqueous Solutionmentioning

confidence: 99%

Review on enhanced oil recovery by nanofluids

Wang

Jiang

2018

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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The addition of nanoparticles into water based fluids (nanofluid) with or without other chemicals to Enhance Oil Recovery (EOR) has recently received intensive interest. Many papers have been published in this area and several EOR mechanisms have been proposed. The main EOR mechanisms include wettability alteration, reduction in InterFacial surface Tension (IFT), increase in the viscosity of aqueous solution, decrease in oil viscosity, and log-jamming. Some of these mechanisms may be associated with the change in disjoining pressure because of the addition of the nanoparticles. The experimental data and results reported by different researchers, however, are not all consistent and some even conflict with others. Many papers published in recent years have been reviewed and the associated experimental data have been analyzed in this paper in order to clarify the mechanisms of EOR by nanofluids. Wettability alteration may be one of the most accepted mechanisms for nanofluid EOR while reduction in IFT and other mechanisms have not been fully proven. The main reason for the inconsistency among the experimental data might be lack of control experiments in which the effect of nanoparticles on oil recovery would be singled out.

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Section: Increase In the Viscosity Of Aqueous Solutionmentioning

confidence: 99%

Review on enhanced oil recovery by nanofluids

Wang

Jiang

2018

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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“…The purpose of this case is to demonstrate the applicability of NPSL in 3D field-scale application model with complex reaction behavoir. A pilot simulation of encapsulation conformance control ( [52] and [11,12]) is simulated on a quarter five-spot problem based on a portion of the SPE10B model (Fig. 16).…”

Section: Case 5: Encapsulation Conformance Control In a 3d Reservoirmentioning

confidence: 99%

Streamline-based simulation of nanoparticle transport in field-scale heterogeneous subsurface systems

Wang

Feng

Blears

et al. 2021

Advances in Water Resources

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Nanoparticle (NP) transport is increasingly relevant to subsurface engineering applications such as aquifer characterization, fracture electromagnetic imaging and environmental remediation. An efficient field-scale simulation framework is critical for predicting NP performance and designing subsurface applications. In this work, for the first time, a streamline-based model is presented to simulate NP transport in field-scale subsurface systems. It considers a series of behaviors exhibited by engineered nanoparticles (NPs), including time-triggered encapsulation, retention, formation damage effects and variable nanofluid viscosity. The key methods employed by the algorithm are streamline-based simulation (SLS) and an operator-splitting (OS) technique for modeling NP transport. SLS has proven to be efficient for solving transport in large and heterogeneous systems, where the pressure and velocity fields are firstly solved on underlying grids using finite-difference (FD) methods. After tracing streamlines, one-dimensional (1D) NP transport is solved independently along each streamline. The adoption of OS enhances flexibility for the entire solution procedure by allowing different numerical schemes to solve different governing equations efficiently and accurately. For the NP transport model, an explicit FD scheme is used to solve the advection term, an implicit FD scheme is used for the diffusion term and an adaptive numerical integration is used to solve the retention terms.

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“…Xie et al (2009) conducted numerical simulation of oil recovery after cross-linked polymer flooding. Verga et al (2017) used core-shell technology to help improve the effectiveness of waterflooding interventions. Valavanides (2018) used the DeProF true-to-mechanism theoretical framework to reveal the effects of underlying flow mechanisms in immiscible steady-state two-phase flow in porous media.…”

Section: Introductionmentioning

confidence: 99%

Enhanced oil recovery after polymer flooding by wettability alteration to gas wetness using numerical simulation

Cheng

Liu

et al. 2018

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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Polymer flooding, as one of the Enhanced Oil Recovery (EOR) methods, has been adopted in many oilfields in China and some other countries. Over 50% oil remains undeveloped in many oil reservoirs after polymer flooding. It has been a great challenge to find approaches to further enhancing oil recovery when polymer flooding is over. In this study, a new method was proposed to increase oil production using gas flooding with wettability alteration to gas wetness when polymer flooding has been completed. The rock wettability was altered from liquid- to gas-wetness during gas flooding. An artificial oil reservoir was constructed and many numerical simulations have been conducted to test the effect of wettability alteration on the oil recovery in reservoirs developed by water flooding and followed by polymer flooding. Production data from different scenarios, water flooding, polymer flooding after water flooding, gas flooding with and without wettability alteration after polymer flooding, were calculated using numerical simulation. The results demonstrate that the wettability alteration to gas wetness after polymer flooding can significantly enhance oil recovery and reduce water cut effectively. Also studied were the combined effects of wettability alteration and reservoir permeability on oil recovery.

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Introducing Core-Shell Technology for Conformance Control

Cited by 9 publications

References 65 publications

Review on enhanced oil recovery by nanofluids

Review on enhanced oil recovery by nanofluids

Streamline-based simulation of nanoparticle transport in field-scale heterogeneous subsurface systems

Enhanced oil recovery after polymer flooding by wettability alteration to gas wetness using numerical simulation

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