Dynamic modeling of drainage through three-dimensional porous materials

Singh, Mohit; Mohanty, Kishore K.

doi:10.1016/s0009-2509(02)00438-4

Cited by 83 publications

(59 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Network modeling is now used to study wide range of phenomena such as simulation of drainage and imbibition processes (Singh and Mohanty 2003), the effect of wettability (Kovscek et al 1993;Dixit et al 1999), the effect of pore structure on relative permeability and capillary pressure (Jerauld and Salter 1990), three phase flow (Fenwick and Blunt 1998), and ganglion mobilization (Dias and Payatakes 1986a,b).…”

Section: Network Model (Nm)mentioning

confidence: 99%

Network Modeling of EOR Processes: A Combined Invasion Percolation and Dynamic Model for Mobilization of Trapped Oil

Bolandtaba¹,

Skauge²

2011

Transp Porous Med

View full text Add to dashboard Cite

A novel concept for modeling pore-scale phenomena included in several enhanced oil recovery (EOR) methods is presented. The approach combines a quasi-static invasion percolation model with a single-phase dynamic transport model in order to integrate mechanistic chemical oil mobilization methods. A framework is proposed that incorporates mobilization of capillary trapped oil. We show how double displacement of reservoir fluids can contribute to mobilize oil that are capillary trapped after waterflooding. In particular, we elaborate how the physics of colloidal dispersion gels (CDG) or linked polymer solutions (LPS) is implemented. The linked polymer solutions consist of low concentration partially hydrolyzed polyacrylamide polymer crosslinked with aluminum citrate. Laboratory core floods have shown demonstrated increased oil recovery by injection of linked polymer solution systems. LPS consist of roughly spherical particles with sizes in the nanometer range (50-150 nm). The LPS process involve mechanisms such as change in rheological properties effect, adsorption and entrapment processes that can lead to a microscopic diversion and mobilization of waterflood trapped oil. The purpose is to model the physical processes occurring on pore scale during injection of linked polymer solutions. A sensitivity study has also been performed on trapped oil saturation with respect to wettability status to analyze the efficiency of LPS on different wettability conditions. The network modeling results suggest that weakly wet reservoirs are more suitable candidates for performing linked polymer solution injection.

show abstract

Section: Network Model (Nm)mentioning

confidence: 99%

Network Modeling of EOR Processes: A Combined Invasion Percolation and Dynamic Model for Mobilization of Trapped Oil

Bolandtaba¹,

Skauge²

2011

Transp Porous Med

View full text Add to dashboard Cite

show abstract

“…Then, the total pressure drop across a segment of capillary that contains several fluid slugs is obtained by adding up all the viscous pressure drops across the individual slugs Lasseter 1984, 1985;Stark and Manga 2000;van Dijke and Sorbie 2002;Singh and Mohanty 2003;Hou 2007;Joekar-Niasar et al 2008). In this section, the pressure drops calculated in the above manner are compared with the measured results.…”

Section: Extra Pressure Drop Of Slug Flow In a Capillarymentioning

confidence: 99%

An Experimental Study of Mobilization and Creeping Flow of Oil Slugs in a Water-Filled Capillary

2009

View full text Add to dashboard Cite

An experimental investigation was carried out on mobilization and very slow flow of oil slugs in a capillary tube. The pressure drop of the slug flow was measured at every stage of mobilizing and moving the oil slugs as a function of capillary number in the range of 4 × 10 −7 -6 × 10 −6 . The pressure drop across the oil slug experienced three stages: build-up, hold-up, and steady stages. During the build-up stage, the convex rear end of the slug was becoming concave into the oil slug and the convex front end of the slug moved ahead to form a new portion of the slug. At the hold-up stage, both the concave rear end and the front end continued to advance, and the initial contact line of the oil slug with the tube wall through a very thin water film was being shortened. At this stage, the pressure drop reached a maximum value and remained nearly constant. At the steady stage, after the oil slug was completely mobilized out of the original contact region, the differential pressure had a step-drop first, and then the oil slug flowed at a lower differential pressure depending on the flow rate. Numerous slug flow tests of this study showed that the hold-up pressure drop was always higher than the steady stage pressure drop. Results also showed that the measured extra pressure drop was significantly high compared to the pressure drop calculated from Poiseuille equation, which is still commonly used in network modeling of multiphase flow in porous media.

show abstract

“…As an approximation to the layer dynamics, we then use a linear relation to relax the layer thickness in time. This is analog to the concept used for macroscopic capillary pressure by (Hassanizadeh and Gray 1993), and similar to the procedure implemented by Singh and Mohanty (2003). The relaxation equation for a single node yields…”

Section: Film Dynamicsmentioning

confidence: 94%

“…Microroughness was introduced, and the wetting layers advanced due to capillary suction of micromenisci. Singh and Mohanty (2003) studied the flow regimes in drainage with a dynamic model. They considered the bulk flow and layer flow as two linear flow problems.…”

Section: Introductionmentioning

confidence: 99%

A Dynamic Network Model for Two-Phase Flow in Porous Media

Tørå

Øren²,

Hansen

2011

Transp Porous Med

View full text Add to dashboard Cite

We present a dynamic model of immiscible two-phase flow in a network representation of a porous medium. The model is based on the governing equations describing two-phase flow in porous media, and can handle both drainage, imbibition, and steady-state displacement. Dynamic wetting layers in corners of the pore space are incorporated, with focus on modeling resistivity measurements on saturated rocks at different capillary numbers. The flow simulations are performed on a realistic network of a sandpack which is perfectly water-wet. Our numerical results show saturation profiles for imbibition in agreement with experiments. For free spontaneous imbibition we find that the imbibition rate follows the Washburn relation, i.e., the water saturation increases proportionally to the square root of time. We also reproduce rate effects in the resistivity index for drainage and imbibition.

show abstract

Dynamic modeling of drainage through three-dimensional porous materials

Cited by 83 publications

References 43 publications

Network Modeling of EOR Processes: A Combined Invasion Percolation and Dynamic Model for Mobilization of Trapped Oil

Network Modeling of EOR Processes: A Combined Invasion Percolation and Dynamic Model for Mobilization of Trapped Oil

An Experimental Study of Mobilization and Creeping Flow of Oil Slugs in a Water-Filled Capillary

A Dynamic Network Model for Two-Phase Flow in Porous Media

Contact Info

Product

Resources

About