Results 251 to 260 of about 2,609 (289)

Spontaneous imbibition in parallel layers of packed beads

The European Physical Journal E, 2017
The imbibition of a wetting fluid in a homogeneous porous medium follows the diffusion-like behavior described by Washburn. The impregnation of a two-layered porous medium by a wetting fluid due to capillary action has been previously described to have two fronts, one saturating the medium and the other, leading front, which propagates in finer pores ...
S, Ashraf, G, Visavale, S S, Bahga, J, Phirani   +3 more
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Analytical solution to spontaneous imbibition under vertical temperature gradient based on the theory of spontaneous imbibition dynamics

Journal of Petroleum Science and Engineering, 2019
Abstract In this work, we have theoretically studied the imbibition process related to a block in a fractured carbonate reservoir under an assumed constant, vertical temperature gradient, GT. An analytical solution to an ordinary differential equation we developed has been obtained using a computer program, and the original Washburn law normally ...
Mumuni Amadu, Michael J. Pegg
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Nonequilibrium Effects During Spontaneous Imbibition

Transport in Porous Media, 2006
Accurate models of multiphase flow in porous media and predictions of oil recovery require a thorough understanding of the physics of fluid flow. Current simulators assume, generally, that local capillary equilibrium is reached instantaneously during any flow mode.
S. S. Le Guen, A. R. Kovscek
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Spontaneous Imbibition in Niger Delta Cores

SPE Nigeria Annual International Conference and Exhibition, 2016
Abstract Spontaneous imbibition is a process where the non-wetting fluid is displaced by the wetting fluid in a porous medium by means of capillary forces. Spontaneous imbibition plays a key role in oil recovery. This paper presents experimental data for countercurrent spontaneous imbibition into cores with different ...
A. Kerunwa, M. O. Onyekonwu, C. I. Anyadiegwu, A. O. Olafuyi   +3 more
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On Barenblatt's Model of Spontaneous Countercurrent Imbibition

Transport in Porous Media, 2004
Water imbibition is a critical mechanism of secondary oil recovery from fractured reservoirs. Spontaneous imbibition also plays a significant role in storage of liquid waste by controlling the extent of rock invasion. In the present paper, we extend a model of countercurrent imbibition based on Barenblatt's theory of non-equilibrium two-phase flow by ...
Dmitry Silin, Tad Patzek
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Wettability Evaluation by Spontaneous Imbibition Measurement

Jornual of AL-Farabi for Engineering Sciences, 2022
The propensity of one fluid in a fluid pair to coat the surface voluntarily is known as wettability. Fluid distribution and flow behavior in porous rocks mainly controlled by wettability. Oil recovery by water flooding depend mainly on the wettability of the reservoir rock. Many methods used for wettability measurement.
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Spontaneous Imbibition and Imbibition Oil Recovery in Tight Rocks

2017
Advances in the development of unconventional resources have led to a surge in North American oil production. For example, tight oil production has pushed the U.S. crude supply to over 9% of world total production. Therefore, petrophysical characterization of such low-permeability rocks, has become increasingly important for petroleum engineers ...
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On nonequilibrium models of spontaneous countercurrent imbibition

Computational Geosciences, 2016
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Torsu, Prosper K., Aryana, Saman A.
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Spontaneous Imbibition with Matched Liquid Viscosities

Proceedings of SPE Annual Technical Conference and Exhibition, 2005
Abstract Laboratory results of oil recovery through spontaneous imbibition are commonly scaled-up to forecast oil recovery from fractured reservoirs. This study addresses oil recovery from cylindrical sandstone cores by spontaneous imbibition at very strongly water-wet conditions for viscosity ratios of unity (a special case of the ...
H. Fischer, N. R. Morrow
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Effects of Capillary Heterogeneities on Spontaneous Imbibition

Proceedings of SPE Annual Technical Conference and Exhibition, 1995
Abstract This paper presents numerical studies of spontaneous imbibition phenomenon in a heterogeneous matrix block of porous medium in one and two dimensional systems. Heterogeneous distributions of permeability as well as wettability that could affect spontaneous imbibition are considered.
M. Zeybek, G. Gurakin, A. Donmez, M. Onur   +3 more
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