Foam propagation and oil recovery potential at large distances from an injection well

Norouzi, Hamid Reza; Madhi, Mehdi; Seyyedi, Mojtaba; Rezaee, Mohmmad

doi:10.1016/j.cherd.2018.05.024

Cited by 14 publications

(1 citation statement)

References 53 publications

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“…Foam fluid has many applications in oil fields because of its unique properties, such as spontaneous plugging of large channels and plugging of water layers. It has important applications in profile control, controlling edge water and bottom water coning, oil displacement, and even acidizing and fracturing. − In fact, foam is a dispersed system of gas and liquid. Gas is a dispersed phase and liquid is a continuous phase, and it is a process of continuous migration, coalescence, and deformation during flowing in formation.…”

Section: Introductionmentioning

confidence: 99%

Quantitative Characterization of Foam Transient Structure in Porous Media and Analysis of Its Flow Behavior Based on Fractal Theory

Wang

et al. 2020

Ind. Eng. Chem. Res.

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Foam fluid is widely used in petroleum industry, so the behavior of the foam fluid flow in porous media directly affects the application effect of foam. However, the foam flow pattern in porous media is difficult to be established because of its dynamic change of interface structure and unpredictable boundary condition. In this work, the transient structural changes of the foam fluid in porous media are quantitatively characterized, and the flow behavior is analyzed based on fractal theory and visual experiments. First, the foam fractal characteristics are verified, and the fractal dimension is calculated. Results show that the foam fractal dimension is between 1.5 and 2.0, and the foam flow can be divided into three stages: gas–liquid two-phase flow, foam unstable flow stage, and foam stable flow stage. In addition, the evaluation indices of foam performance in porous media are proposed to evaluate the influencing factors, namely, the fractal dimension in stable stage D foam‑s and the time needed to reach stability T s. The analysis shows that the larger concentration of the surfactant and the lower permeability correspond to smaller D foam‑s and the larger temperature corresponds to larger D foam‑s, and D foam‑s of the nitrogen foam is smaller than that of the carbon dioxide foam. T s is the opposite. Last, the relationship between fractal dimension, pressure, and gas saturation is discussed. Qualitative analysis shows that the larger the displacement pressure, the smaller the foam fractal dimension and the higher the gas saturation, the smaller the foam fractal dimension. This paper provides a new method to explore the flow behavior of foam flow in formation, which has a certain significance for guiding the field application of the foam fluid.

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Section: Introductionmentioning

confidence: 99%

Quantitative Characterization of Foam Transient Structure in Porous Media and Analysis of Its Flow Behavior Based on Fractal Theory

Wang

et al. 2020

Ind. Eng. Chem. Res.

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Performance of surfactant blend formulations for controlling gas mobility and foam propagation under reservoir conditions

Memon

Elraies

Al-Mossawy

2020

J Petrol Explor Prod Technol

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The use of surfactant is one of the possible solutions to minimize the mobility of gases and improve the sweep efficiency, but the main problem with this process is its stability in the presence of injection water and crude oil under reservoir conditions. In this study, the three types of surfactant anionic, nonionic and amphoteric are examined in the presence of brine salinity at 96 °C and 1400 psia. To access the potential blended surfactant solutions as gas mobility control, laboratory test including aqueous stability, interfacial tension (IFT) and mobility reduction factor (MRF) were performed. The purpose of MRF is to evaluate the blocking effect of selected optimum surfactant solutions. Based on experimental results, no precipitation was observed by testing the surfactant solutions at reservoir temperature of 96 °C. The tested surfactant solutions reduced the IFT between crude oil and brine. The effectiveness and strength of surfactant solutions without crude oil under reservoir conditions were evaluated. A high value of differential pressure demonstrates that the strong foam was generated inside a core that resulted in delay in breakthrough time and reduction in the gas mobility. High mobility reduction factor result was measured by the solution of blended surfactant 0.6%AOS + 0.6%CA406H. Mobility reduction factor of other tested surfactant solutions was found low due to less generated foam by using CO2 under reservoir conditions. The result of these tested surfactant solutions can provide the better understanding of the mechanisms behind generated foam stability and guideline for their implementation as gas mobility control during the process of surfactant alternating gas injection.

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Static and dynamic behavior of foam stabilized by modified nanoparticles: Theoretical and experimental aspects

Suleymani

Ashoori

Ghotbi

et al. 2020

Chemical Engineering Research and Design

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Foam propagation and oil recovery potential at large distances from an injection well

Cited by 14 publications

References 53 publications

Quantitative Characterization of Foam Transient Structure in Porous Media and Analysis of Its Flow Behavior Based on Fractal Theory

Quantitative Characterization of Foam Transient Structure in Porous Media and Analysis of Its Flow Behavior Based on Fractal Theory

Performance of surfactant blend formulations for controlling gas mobility and foam propagation under reservoir conditions

Static and dynamic behavior of foam stabilized by modified nanoparticles: Theoretical and experimental aspects

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