Numerical Investigations of Steam and Hot-Water Flooding in Fractured Porous Media

Jensen, Tryg; Sharma, M.P.; Harris, H.G.; Whitman, Dean

doi:10.2118/24172-ms

Cited by 13 publications

(3 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Natural convection in fluid-saturated porous materials is encountered in many applications such as molten metals infiltration in porous media [9][10][11][12], drying and transport of gases in porous media [13][14][15], enhanced oil recovery by hot-water flooding in porous beds [16], combustion of heavy oils in porous reservoirs [17,18], etc., where the thermal boundary conditions play a significant role in the overall process. Effects of thermal boundary conditions, such as sinusoidal heating and discrete heating, are reported in the literature [19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Entropy Generation During Natural Convection in a Porous Cavity: Effect of Thermal Boundary Conditions

Basak

Kaluri

Balakrishnan

2012

Numerical Heat Transfer, Part A: Applications

View full text Add to dashboard Cite

Entropy generation plays a significant role in the overall efficiency of a given system, and a judicious choice of optimal boundary conditions can be made based on a knowledge of entropy generation. Five different boundary conditions are considered and their effect of the permeability of the porous medium, heat transfer regime (conduction and convection) on entropy generation due to heat transfer, and fluid friction irreversibilities are investigated in detail for molten metals (Pr ¼ 0.026) and aqueous solutions (Pr ¼ 10), with Darcy numbers (Da) between 10 À5 -10 À3 and at a representative high Rayleigh number, Ra ¼ 5 Â 10 5 . It is observed that the entropy generation rates are reduced in sinusoidal heating (case 2) when compared to that for uniform heating (case 1), with a penalty on thermal mixing. Finally, the analysis of total entropy generation due to variation in Da and thermal mixing and temperature uniformity indicates that, there exists an intermediate Da for optimal values of entropy generation, thermal mixing, and temperature uniformity.

show abstract

Section: Introductionmentioning

confidence: 99%

Entropy Generation During Natural Convection in a Porous Cavity: Effect of Thermal Boundary Conditions

Basak

Kaluri

Balakrishnan

2012

Numerical Heat Transfer, Part A: Applications

View full text Add to dashboard Cite

show abstract

“…They indicated that the rate of heat transfer between the matrix and the fractures, both by conduction and convection, plays an important role in oil recovery of the NFRs. Jensen et al 17 . developed a non‐isothermal three‐phase model using the finite difference method to analyze the data obtained by laboratory experiments for fractured domains.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of cold and hot water injection into naturally fractured porous media using the extended–FEM and an equivalent continuum model

Mortazavi

Pirmoradi

Khoei

2021

Num Anal Meth Geomechanics

View full text Add to dashboard Cite

In this paper, a computational technique is presented for the isothermal and non‐isothermal water injection into naturally fractured oil reservoirs. A remarkable number of naturally fractured reservoirs contain relatively heavy oils that could not be extracted economically; hence, the thermal recovery methods are extensively used for such reservoirs. In this study, the effectiveness of hot water injection over cold (isothermal) water injection in oil production is quantified. The influence of long and short fractures and their alignments on oil recovery are discussed. To this end, a 2D model for two‐phase fluid flow and heat transfer is presented. The medium is assumed to be partially saturated with water as the wetting phase and oil as the non‐wetting phase. The governing equations consist of the energy balance equation together with the continuity equations of both fluid phases. To take the long (macro) fractures into account, the extended finite element method is employed by considering permeable fracture faces; accordingly, the mass and heat transfer between the fracture and the matrix are captured accurately. In addition, the network of short (micro) fractures is incorporated by an equivalent continuum model. Several numerical examples are presented to demonstrate the influence of injection temperature, initial reservoir temperature, and the long and short fractures on oil production. Furthermore, the simultaneous effect of the macro‐ and micro‐fractures along with the injection temperature are examined. The results show that the proposed computational model is a promising tool that can be used in the cold or hot water injection, and can be employed in the economic feasibility studies of recovery methods in the future.

show abstract

“…Enhancement of oxygen transport in liquid metal by natural convection during oxidation of liquid lead and lead-bismuth eutectic in a discretely heated enclosure was investigated by Ma et al 37 Studies on natural convection in porous media due to discrete heat sources are mainly focused on electronic cooling applications. [38][39][40][41] However, thermal treatment of various fluids in porous media have several other important applications such as molten metal infiltration in porous media, [42][43][44][45] drying and transport of gases in porous media, [46][47][48] enhanced oil recovery by hot-water flooding in porous beds, 49 combustion of heavy oils in porous reservoirs, 50,51 etc. Thus, an understanding of the role of discrete heating for various fluids in porous media is important and such studies are yet to appear in the literature.…”

Section: Introductionmentioning

confidence: 99%

Efficient Methodologies for Processing of Fluids by Thermal Convection within Porous Square Cavities

Kaluri¹,

Basak²

2010

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

Effective use of thermal energy is the key for the energy-efficient processing of materials. A proper understanding of heat flow would be very useful in designing the systems of high energy efficiency with a minimal waste of precious energy resources. In the current study, a distributed heating methodology is proposed for the efficient thermal processing of materials. A detailed investigation on the processing of various fluids of industrial importance (with a Prandtl number of Pr = 0.015, 0.7, 10, and 1000) in differentially and discretely heated porous square cavities is presented. Analysis of laminar convective heat flow within a range of Darcy number, D a = 10−6−10−3 and Rayleigh number, R a = 103−106 has been carried out, based on a heatline visualization approach. The effect of D a and the role of distributed heating in enhancing the convection in the cavities is illustrated via heatline distributions, which represent the paths of the heat flow, the magnitude of heat flow, and zones of high heat transfer. It is observed that distributed heating plays an important role in enhancement of thermal mixing and temperature uniformity. Furthermore, the effect of D a for various Pr values on the variation of local Nusselt number (Nu) is analyzed, based on heatline distributions.

show abstract

Numerical Investigations of Steam and Hot-Water Flooding in Fractured Porous Media

Cited by 13 publications

References 12 publications

Entropy Generation During Natural Convection in a Porous Cavity: Effect of Thermal Boundary Conditions

Entropy Generation During Natural Convection in a Porous Cavity: Effect of Thermal Boundary Conditions

Numerical simulation of cold and hot water injection into naturally fractured porous media using the extended–FEM and an equivalent continuum model

Efficient Methodologies for Processing of Fluids by Thermal Convection within Porous Square Cavities

Contact Info

Product

Resources

About