An insight into core flooding experiment via NMR imaging and numerical simulation

Siavashi, Javad; Najafi, Atefeh; Sharifi, Mohammad; Fahimpour, Jalal; Shabani, Mehdi; Liu, Bo; Liu, Kouqi; Yan, Jin; Ostadhassan, Mehdi

doi:10.1016/j.fuel.2022.123589

Cited by 16 publications

(3 citation statements)

References 80 publications

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“…This fact can be utilized to quantify the residual oil distribution in the different pores. 176−179 The T 2 distribution is related to the specific surface area by eq 2, as summarized by Siavashi et al 180 T S V where ρ s is the interfacial relaxivity,w hich is related to the surficial mineralogy characteristics of the pore, and S V is the ratio of the specific area of the pore to the pore volume. S V is related to the pore size, as shown in eq 3:…”

Section: Nuclear Magnetic Resonance (Nmr)mentioning

confidence: 99%

“…The T 2 distribution is related to the specific surface area by eq , as summarized by Siavashi et al 1 T 2 = ρ normals S V where ρ s is the interfacial relaxivity,w hich is related to the surficial mineralogy characteristics of the pore, and S V is the ratio of the specific area of the pore to the pore volume. S V is related to the pore size, as shown in eq : S V = F normals / r where F s is the shape factor, which depends on the pore model, and r is the radius of the pore.…”

Section: Pore-scale Investigation Techniquesmentioning

confidence: 99%

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Oil Recovery Performance by Surfactant Flooding: A Perspective on Multiscale Evaluation Methods

et al. 2022

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Chemical-enhanced oil recovery (cEOR) is a class of techniques commonly used to extract hydrocarbon fluids from reservoir rocks beyond conventional waterflooding. Surfactants are among the chemical agents employed in a cEOR process, as they aid in enhancing oil recovery by lowering the oil–water interfacial tension (IFT) and altering the rock wettability toward less oil-wet conditions. Understanding the flow characteristics and mechanisms involved during surfactant flooding helps improve the performance of injected surfactants and results in higher oil recovery. The objective of this review is to outline the recent applications of the different methods employed to understand the behavior and mechanisms involved during surfactant-enhanced oil recovery. The review begins with a general background highlighting the basic characteristics of surfactants and the main mechanisms by which they exert their influence. Recent studies conducted to investigate the oil recovery performance through different methods are then presented, including traditional coreflooding experiments, microfluidics studies, and oil recovery through sand packs. The methodology of the analysis and the interpretation of the data obtained from the different oil recovery tests, including oil recovery factor, pressure data, and relative permeability, are also described. Pore-scale analysis and imaging methods including nuclear magnetic resonance (NMR), magnetic resonance imaging (MRI), and X-ray medical and microcomputed tomography (μCT) scanning and their applicability in assessing the recovery performance are described. Finally, a few examples of field monitoring methods for surfactant flooding are highlighted. This review provides knowledge of the different multiscale evaluation methods and their applicability during surfactant flooding.

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Section: Nuclear Magnetic Resonance (Nmr)mentioning

confidence: 99%

Section: Pore-scale Investigation Techniquesmentioning

confidence: 99%

Oil Recovery Performance by Surfactant Flooding: A Perspective on Multiscale Evaluation Methods

et al. 2022

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“…To address this limitation, advanced techniques such as medical CT scans and NMR spectroscopy have been employed to complement core ooding experimental results (Cuthiell et al, 1993) (Siavashi et al, 2022). Nevertheless, these techniques do not provide dynamic, high-resolution micron-scale visualization of multiphase ow within core sections during experiments (Xu et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Visualizing Conformance Control Mechanisms in High-Temperature Reservoirs: A Microfluidic Analysis of Pickering Emulsified Gel Systems

Saikia,

Mejia,

Sultan

et al. 2024

Preprint

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In the context of mature oil fields, the management of conformance control and water shut-off stands out as a formidable challenge. Our prior research endeavors (Saikia et al., 2021, 2020) have introduced an innovative Pickering emulsified gel system tailored for the precise adjustment of relative permeability in high-temperature reservoirs. To optimize the efficiency of this system, a comprehensive comprehension of the underlying conformance control mechanism is deemed imperative. Traditionally, the exploration of conformance control mechanisms leans on empirical data culled from core flooding experiments, computerized tomography (CT) scans, nuclear magnetic resonance spectroscopy (NMR), and analogous methodologies. Nevertheless, these conventional avenues often fall short in delivering real-time visual analyses, thereby raising doubts about their reliability in predicting conformance mechanisms. In our research study, we have harnessed the capabilities of microfluidics to unlock real-time visual insights into the mechanisms governing conformance control. Employing two distinct glass micromodel geometries, we have conducted Pickering emulsified gel treatments at a scorching 105°C to achieve the targeted conformance control within these micromodels. By synergizing image and video analysis with injection pressure measurements, our findings have cast doubt on the previously posited Thin Film conformance control mechanism, revealing a more nuanced perspective on this intricate process.

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Visualizing conformance control mechanisms in high-temperature reservoirs: a microfluidic analysis of Pickering emulsified gel systems

Saikia,

Mejia,

Sultan

et al. 2024

Microfluid Nanofluid

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An insight into core flooding experiment via NMR imaging and numerical simulation

Cited by 16 publications

References 80 publications

Oil Recovery Performance by Surfactant Flooding: A Perspective on Multiscale Evaluation Methods

Oil Recovery Performance by Surfactant Flooding: A Perspective on Multiscale Evaluation Methods

Visualizing Conformance Control Mechanisms in High-Temperature Reservoirs: A Microfluidic Analysis of Pickering Emulsified Gel Systems

Visualizing conformance control mechanisms in high-temperature reservoirs: a microfluidic analysis of Pickering emulsified gel systems

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