We present a scaling theory for the long time behavior of spontaneous imbibition in porous media consisting of interconnected pores with a large length-to-width ratio. At pore junctions, the meniscus propagation in one or more branches can come to a halt when the Laplace pressure of the meniscus exceeds the hydrostatic pressure within the junction. We derive the scaling relations for the emergi...

The imbibition of a solid island on a substrate with a square array of pillars is studied by means of kinetic Monte Carlo simulations. Imbibition is found to occur via an intermediate state where an island sits on the film. Two dynamical regimes are identified depending on the geometry of the substrate: a stochastic regime, where the dynamics are controlled by the nucleation-limited motion of t...

Abstract Injection of imbibition fluids or CO2 during hydraulic fracturing is an effective stimulation method for tight oil reservoirs. Selecting appropriate agents significant to optimize the integrated scheme and production in In this study, a series lab experiments, including spontaneous imbibition, dynamic huff puff, were carried out using real cores, water absorption apparatus, core floodi...

Abstract A reasonable displacement method is essential to improve the oil efficiency of tight reservoirs. In this study, three different methods were utilized on core samples obtained from Yanchang Formation Chang 8 and 9 reservoirs: spontaneous imbibition displacement, various water flooding rate after imbibitions; furthermore, utilization degree residual in pores was discussed. The imbibition...

*Corresponding author e-mail: [email protected] **This work was supported by the Internal Grant Agency of the Czech University of Life Sciences Prague, Project No. 20163001, (2016). A b s t r a c t . Image analysis is widely used for monitoring seeds during germination, and it is often the final phase of germination that is subjected to the greatest attention. However, the initial phase of germina...

Embryos, excised from seed coats of soybeans (Glycine max Merr. cv. ;Wayne'), leak profusely during the first minutes of imbibition. A discontinuity of temperature/leakage patterns occurs between 10 and 15 C; as embryos imbibe at 10 C or lower, disproportionately more solutes leak out per unit of water imbibed. Short periods of imbibition at or below 12 to 14 C reduce embryo germination and axi...