Spontaneous imbibition characteristics of diatomite

Akın, Serhat; Schembre, J.M.; Bhat, Suniti Kumar; Kovscek, Anthony R.

doi:10.1016/s0920-4105(00)00010-3

Cited by 220 publications

(165 citation statements)

References 16 publications

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“…It was observed that the water imbibed into the smaller pores and the air was ejected from the larger pores. The production flow paths of air were smaller in dimension, which is agreement with experimental results of high water saturation behind the imbibition front by use of diatomite samples (Akin et al, 2000). Babadagli (2008, 2010) conducted the similar visualization experiments by use of two-dimensional sandpacks and micromodels to clarify the physics of SI at pore scale.…”

Section: Micromodels For Spontaneous Imbibitionsupporting

confidence: 76%

“…Therefore, the snap-off of air was suppressed by the rapid SI of water. Akin et al (2000) reported the similar experimental results using X-ray imaging to study the SI in diatomite samples. In instantly filled fracture experiments, little water was drawn into the matrix system before the fracture was filled with water and non-wetting phase was ejected from the matrix system counter-currently.…”

Section: Micromodels For Spontaneous Imbibitionsupporting

confidence: 56%

“…In addition, little snap-off of air were observed. For snap-off to occur pore corners and crevices must fill with water and sufficient liquid for snap-off must accumulate at the pore throats before the pore is filled completely by the advancing imbibition front (Akin et al, 2000;Kovscek, 2003). For water-gas system, it was observed that the advancing front filled pores with water at least as rapidly as pore corners swelled with water.…”

Section: Micromodels For Spontaneous Imbibitionmentioning

confidence: 99%

“…X-ray CT scanning is a commonly used imaging technique to detect fluid distribution pattern (Rangel-German and . Akin et al (2000) designed a specific imbibition cells for use in X-ray CT scanner to study multidimensional co-current SI in diatomite (Fig. 12).…”

Section: Imaging Techniquesmentioning

confidence: 99%

“…The imbibition cell method and weighing method are the most commonly used methods to measure oil production by SI. Some advanced imaged techniques, including X-ray CT scanning (Akin et al, 2000;Zhou et al, 2002) and Magnetic resonance imaging (MRI) method (Baldwin and Spinler, 2002;Fernø et al, 2013), were applied to detect the fluid distribution in cores. Various boundary conditions were applied in imbibition experiments according to the boundary condition of matrix blocks in fractured reservoirs (Bourblaux, 1990;Standnes, 2004).…”

Section: Introductionmentioning

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.

115

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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: Micromodels For Spontaneous Imbibitionsupporting

confidence: 76%

Section: Micromodels For Spontaneous Imbibitionsupporting

confidence: 56%

Section: Micromodels For Spontaneous Imbibitionmentioning

confidence: 99%

Section: Imaging Techniquesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

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.

115

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Effects of microstructure on water imbibition in sandstones using X‐ray computed tomography and neutron radiography

et al. 2017

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Capillary imbibition in variably saturated porous media is important in defining displacement processes and transport in the vadose zone and in low‐permeability barriers and reservoirs. Nonintrusive imaging in real time offers the potential to examine critical impacts of heterogeneity and surface properties on imbibition dynamics. Neutron radiography is applied as a powerful imaging tool to observe temporal changes in the spatial distribution of water in porous materials. We analyze water imbibition in both homogeneous and heterogeneous low‐permeability sandstones. Dynamic observations of the advance of the imbibition front with time are compared with characterizations of microstructure (via high‐resolution X‐ray computed tomography (CT)), pore size distribution (Mercury Intrusion Porosimetry), and permeability of the contrasting samples. We use an automated method to detect the progress of wetting front with time and link this to square‐root‐of‐time progress. These data are used to estimate the effect of microstructure on water sorptivity from a modified Lucas‐Washburn equation. Moreover, a model is established to calculate the maximum capillary diameter by modifying the Hagen‐Poiseuille and Young‐Laplace equations based on fractal theory. Comparing the calculated maximum capillary diameter with the maximum pore diameter (from high‐resolution CT) shows congruence between the two independent methods for the homogeneous silty sandstone but less effectively for the heterogeneous sandstone. Finally, we use these data to link observed response with the physical characteristics of the contrasting media—homogeneous versus heterogeneous—and to demonstrate the sensitivity of sorptivity expressly to tortuosity rather than porosity in low‐permeability sandstones.

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Wettability of Gas Shale Reservoirs

Dehghanpour

Habibi

2015

Fundamentals of Gas Shale Reservoirs

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Spontaneous imbibition characteristics of diatomite

Cited by 220 publications

References 16 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

Effects of microstructure on water imbibition in sandstones using X‐ray computed tomography and neutron radiography

Wettability of Gas Shale Reservoirs

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