Effect of Wettability in Free-Fall and Controlled Gravity Drainage in Fractionally Wet Porous Media with Fractures

2011 ◽  
Vol 25 (10) ◽  
pp. 4452-4468 ◽  
Author(s):  
Sohrab Zendehboudi ◽  
Nima Rezaei ◽  
Ioannis Chatzis
Keyword(s):  
Porous Media ◽  
Free Fall ◽  
Gravity Drainage

NUMERICAL SIMULATION OF FREE FALL AND CONTROLLED GRAVITY DRAINAGE PROCESSES IN POROUS MEDIA

2012 ◽  
Vol 15 (3) ◽  
pp. 211-232 ◽  
Author(s):  
Sohrab Zendehboudi ◽  
Ali Shafiei ◽  
Ioannis Chatzis ◽  
Maurice B. Dusseault
Keyword(s):  
Numerical Simulation ◽  
Porous Media ◽  
Free Fall ◽  
Gravity Drainage

Study of the porous media random structure model

2020 ◽  
Vol 34 (10) ◽  
pp. 2050090
Author(s):  
Shaoyi Suo ◽  
Linsong Jiang ◽  
Ping Wang ◽  
Maozhao Xie
Keyword(s):  
Porous Media ◽  
Free Fall ◽  
Packed Bed ◽  
Random Structure ◽  
Generation Process ◽  
Structure Model ◽  
Ordered Structure ◽  
High Similarity ◽  
Packed Structure ◽  
Rapid Modeling

The random structure model of porous media is constructed by the gravity packed method, which can give a random packed structure that is similar to the actual packed bed structure by simulating the free fall, collision and stacking process of pellets via the OpenFOAM. Different from the existing ordered structure model of porous media, the structure model adopted in this paper has strong randomness since it simulates the actual generation process of the porous media material. Meanwhile, the following batch modeling instructions are completed with the MATLAB, which can ensure that the random structure model of porous media has the advantages of high similarity with the actual porous structure and rapid modeling.

scholarly journals Experimental and Modelling Study of Gravity Drainage in a Three-Block System

2020 ◽  
Author(s):  
Hamidreza Erfani ◽  
Abtin Karimi Malekabadi ◽  
Mohammad Hossein Ghazanfari ◽  
Behzad Rostami
Keyword(s):  
Numerical Model ◽  
Oil Recovery ◽  
Tilt Angle ◽  
Free Fall ◽  
Recovery Factor ◽  
Gravity Drainage ◽  
Horizontal Fracture ◽  
Block System ◽  
Matrix Blocks

AbstractGravity drainage is known as the controlling mechanism of oil recovery in naturally fractured reservoirs. The efficiency of this mechanism is controlled by block-to-block interactions through capillary continuity and/or reinfiltration processes. In this study, at first, several free-fall gravity drainage experiments were conducted on a well-designed three-block apparatus and the role of tilt angle, spacers’ permeability, wettability and effective contact area (representing a different status of the block-to-block interactions between matrix blocks) on the recovery efficiency were investigated. Then, an experimental-based numerical model of free-fall gravity drainage process was developed, validated and used for monitoring the saturation profiles along with the matrix blocks. Results showed that gas wetting condition of horizontal fracture weakens the capillary continuity and in consequence decreases the recovery factor in comparison with the original liquid wetting condition. Moreover, higher spacers’ permeability increases oil recovery at early times, while it decreases the ultimate recovery factor. Tilt angle from the vertical axis decreases recovery factor, due to greater connectivity of matrix blocks to vertical fracture and consequent channelling. Decreasing horizontal fracture aperture decreases recovery at early times but increases the ultimate recovery due to a greater extent of capillary continuity between the adjacent blocks. Well match observed between the numerical model results and the experimental data of oil recovery makes the COMSOL multiphysics model attractive for application in multi-blocks fractured systems considering block-to-block interactions. The findings of this research improve our understanding of the role of different fracture properties on the block-to-block interactions and how they change the ultimate recovery of a multi-block system.

EFFECTS OF FRACTURE PROPERTIES ON THE BEHAVIOR OF FREE-FALL AND CONTROLLED GRAVITY DRAINAGE PROCESSES

2012 ◽  
Vol 15 (4) ◽  
pp. 343-369 ◽  
Author(s):  
Sohrab Zendehboudi ◽  
Nima Rezaei ◽  
Ioannis Chatzis
Keyword(s):  
Free Fall ◽  
Gravity Drainage ◽  
Fracture Properties

Three-phase flow and gravity drainage in porous media

1995 ◽  
Vol 20 (1-2) ◽  
pp. 77-103 ◽  
Author(s):  
Martin Blunt ◽  
Dengen Zhou ◽  
Darryl Fenwick
Keyword(s):  
Porous Media ◽  
Gravity Drainage ◽  
Phase Flow ◽  
Three Phase ◽  
Three Phase Flow
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