Experimental study of some important factors on nonwetting phase recovery by cocurrent spontaneous imbibition

Hamidpour, Esmaeil; Mirzaei‐Paiaman, Abouzar; Masihi, Mohsen; Harimi, Behrouz

doi:10.1016/j.jngse.2015.09.070

Cited by 61 publications

(33 citation statements)

References 55 publications

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“…However, when the non-wetting phase viscosity was constant with increasing wetting phase viscosity, it is observed that the final oil recovery had no significant change for both glassbead-packing and quartz-sand-packing (Meng et al, 2016). Hamidpour et al (2015) reported the similar observation by use of limestone samples. It is proposed that the imbibition rate decreased with increasing wetting phase viscosity and the capillary number may be consistent for different wetting phase viscosities, which results in the similar final oil recovery Chatzls et al, 1988).…”

Section: Fluid Viscositysupporting

confidence: 69%

“…However, they also did not give the characteristic length to account for the different boundary conditions. Hamidpour et al (2015) conducted the one-dimensional and multi-dimensional imbibition experiments with sandstone and limestone partly covered by water. The experimental results were used to verify analytical and numerical models but they also did not give the reliable characteristic length to scale up their imbibition data.…”

Section: Combination Of Co-and Counter-current Imbibitionmentioning

confidence: 99%

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A critical review on fundamental mechanisms of spontaneous imbibition and the impact of boundary condition, fluid viscosity and wettability

Meng

Liu

Wang

2017

Adv. Geo-Energ. Res.

114

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Spontaneous imbibition (SI) is one of the primary mechanisms of oil production from matrix system in fractured reservoirs. The main driving force for SI is capillary pressure. Researches relating to SI are moving fast. In the past few years, amount of literature on the development of SI with respect to many variables, such as mechanism of imbibition, scaling of imbibition data and wettability of matrix blocks. In this review, we first introduced the fundamental physics mechanism of SI through capillary tube models and micromodels. Then both conventional and more novel experimental methods of measuring oil production are discussed thoughtfully. This is followed by reviewing the oil production performance under various boundary conditions and the characteristic length in scaling equations that have been used to account for different cores shape and boundary conditions. The effect of fluid viscosity on the rate of oil production and final oil recovery as well as the development of viscosity term in the scaling equation are reported. The commonly used methods to quantitatively evaluate the wettability of cores and the SI under mix-and oil-wet conditions are introduced. And last but not least, the methods and mechanism of wettability alteration for enhanced oil recovery in mix-or oil-wet fractured reservoirs are presented.Keywords: Spontaneous imbibition, fractured reservoirs, boundary condition, viscosity ratio, wettability.Citation: Meng, Q., Liu, H., Wang, J. A critical review on fundamental mechanisms of spontaneous imbibition and the impact of boundary condition, fluid viscosity and wettability.

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Section: Fluid Viscositysupporting

confidence: 69%

Section: Combination Of Co-and Counter-current Imbibitionmentioning

confidence: 99%

A critical review on fundamental mechanisms of spontaneous imbibition and the impact of boundary condition, fluid viscosity and wettability

Meng

Liu

Wang

2017

Adv. Geo-Energ. Res.

114

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“…For this boundary condition, oil can only be produced by counter-current imbibition. In addition, oil production is linear with square root of imbibition time for conventional core (Hamidpour et al, 2015). However, more studies show that the time exponent for linear correlation (Meng, 2017).…”

Section: Core Scale Of Spontaneous Imbibition With Different Boundarymentioning

confidence: 99%

Recent advances in spontaneous imbibition with different boundary conditions

Meng¹,

Cai²

2018

Capillarity

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Spontaneous imbibition plays an important role in many practical processes, such as oil recovery, hydrology, and environmental engineering. The past few years have witnessed a rapid development in the mechanism analysis and industry applications of spontaneous imbibition. In this paper, we focus on boundary conditions of spontaneous imbibition, which has important effects on the imbibition rate and efficiency. Various boundary conditions are first generated using different capillary model and introduced focusing on the fundamental physical mechanisms. Then, the studies of spontaneous imbibition in core scale are reviewed. The feature is discussed and the relative permeability for coand counter-current imbibition is analyzed. The scaling of imbibition data with different boundary conditions is also presented by combination of experimental and numerical methods. An analytical model to describe spontaneous imbibition is provided at the end.

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“…Pooladi-Darvish and Firoozabadi [37] analyzed the difference of counter-current imbibition and cocurrent imbibition after water breakthrough in the cores with different permeabilities. Some scholars [28,[38][39][40][41][42] have studied the effects of core wettability, initial water saturation, interfacial tension (IFT), fluid viscosity ratio, soaking time, and permeability on dynamic imbibition. Hammond and Unsal [43] simulated and developed the correlation between the displacement pressure and the imbibition rate during the dynamic imbibition process.…”

Section: Introductionmentioning

confidence: 99%

Characterization of the Dynamic Imbibition Displacement Mechanism in Tight Sandstone Reservoirs Using the NMR Technique

et al. 2020

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An experimental technique is developed to investigate the dynamic imbibition displacement mechanism in tight sandstone formations of the Yanchang group of the Ordos basin. By combining the dynamic imbibition core flooding experiments and NMR technique, the effects of the injection volume and rate on displacement efficiency are investigated. Moreover, the displacement efficiency of dynamic imbibition is compared with that of static imbibition. This study gains insights into the micromechanisms of dynamic imbibition in tight sandstone formations. It is found that the relative displacement efficiency of dynamic imbibition increases with the increase of injection volume. But the increment amplitude decreases with the increase of injection volume. With the same injection volume, the core displacement efficiency of dynamic imbibition with high permeability is obviously improved. However, the core displacement efficiency decreases rapidly with the increase of injection volume. Optimal injection volumes are recommended for tight sandstone formations with different permeabilities. With the increase of the displacement rate, the core displacement efficiency of dynamic imbibition shows a trend of first rising and then declining. There exists an optimal displacement rate in dynamic imbibition displacement, and the optimal displacement rate almost linearly increases with the increase of core permeability. The static imbibition displacement efficiency increases with the increase of soaking time, but the increment amplitude slows down obviously. The displacement efficiency of static imbibition in small pores is higher than that of dynamic imbibition. The displacement efficiency of dynamic imbibition in large pores or microcracks is significantly higher than that of static imbibition. This study provides theoretical support for the optimization and improvement of the waterflooding recovery process in tight sandstone reservoirs.

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Experimental study of some important factors on nonwetting phase recovery by cocurrent spontaneous imbibition

Cited by 61 publications

References 55 publications

A critical review on fundamental mechanisms of spontaneous imbibition and the impact of boundary condition, fluid viscosity and wettability

A critical review on fundamental mechanisms of spontaneous imbibition and the impact of boundary condition, fluid viscosity and wettability

Recent advances in spontaneous imbibition with different boundary conditions

Characterization of the Dynamic Imbibition Displacement Mechanism in Tight Sandstone Reservoirs Using the NMR Technique

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