A Fast 3D Interface Simulator for Steamdrives

Godderij, R.R.G.G.; Bruining, J.; Molenaar, J.

doi:10.2118/59269-pa

Cited by 8 publications

(4 citation statements)

References 23 publications

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“…In 1985, C. H. Neuman et al proposed motion equations to describe rapid steam ascent based on the theory of vertical equilibrium [18]. In 1994, R. R. Godderij et al established a steam drive numerical simulator based on the theory of vertical seepage flow equilibrium to describe the fluid motion law of steam drive [19]. In recent years, the theory of vertical seepage flow equilibrium has mainly been applied in CO 2 storage and oil recovery fields [20].…”

Section: Introductionmentioning

confidence: 99%

Research on Numerical Simulation Methods for Reservoirs of Loose Sandstone Considering the Equilibrium Time of Vertical Seepage Flow

Wang,

You,

Zhang

et al. 2024

Processes

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Due to their high porosity and permeability characteristics, reservoirs of loose sandstone have great development potential. Under weak dynamic conditions, the vertical migration and mass exchange of oil–water two-phase fluids in loose sandstone reservoirs occur very easily. The phenomenon of vertical seepage flow equilibrium has a significant impact on the distribution of oil–water two-phase fluids in the reservoir. However, existing mainstream numerical simulators cannot accurately describe the phenomenon of vertical migration of oil–water two-phase fluids under weak dynamic conditions. In this study, using 3D printing technology, multiple transparent rock core holders were constructed to conduct experiments on the vertical seepage flow equilibrium time of different viscosities and contents of crude oil under different permeabilities of rock cores. Through the analysis and regression of experimental results, a predictive formula for the vertical seepage flow equilibrium time of loose sandstone reservoirs was established. Based on the time-prediction discriminant formula, a multi-scale numerical simulation method for vertical seepage flow equilibrium was constructed. A comparison between the new method and experimental results showed that the numerical simulation method, considering vertical seepage flow equilibrium, is closer to experimental phenomena than traditional numerical simulation methods. This indicates that the method can more accurately reveal the characteristics and distribution laws of the vertical seepage flow of oil–water two-phase fluids in loose sandstone reservoirs.

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Section: Introductionmentioning

confidence: 99%

Research on Numerical Simulation Methods for Reservoirs of Loose Sandstone Considering the Equilibrium Time of Vertical Seepage Flow

Wang,

You,

Zhang

et al. 2024

Processes

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show abstract

“…The simulator was based on a compositional, fully-implicit 3D multiphase, component mass and energy balance. Godderij et al (1999) introduced a 3D steam drive simulator. They used an interface model, where the single-phase steam zone was separated from the two-phase liquid region by a steam condensation front.…”

Section: Introductionmentioning

confidence: 99%

An Eos-Based Numerical Simulation of Thermal Recovery Process Using Unstructured Meshes

Marcondes

Varavei

Sepehrnoori

2015

Braz. J. Chem. Eng.

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-In the past thirty years, the development of compositional reservoir simulators using an equation of state (EOS) has been addressed in the literature. However, the development of compositional thermal simulators in conjunction with the EOS formulation, in particular, has not been addressed extensively. In this work, a fully implicit, thermal, compositional EOS-based simulator in conjunction with unstructured meshes has been developed. In this model, an equation of state is used for equilibrium calculations among phases. Also, the physical properties are calculated based on an EOS, hence obviating the need for using steam tables for calculation of water/steam properties. The governing equations for the model comprise fugacity equations, material balance, pore volume constraint and energy equation. The governing partial differential equations are solved using the EbFVM (Element based Finite Volume Method). Results for several case studies consisting of 2D and 3D reservoirs are presented in order to demonstrate the applicability of the method.

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“…But as computational resources increased, VE models became less and less used. However, for situations with strong gravity segregation (like steam injection) interface models have been an active research area (Godderij et al, 1999;Neuman, 1985). the large density differences between super-critical CO 2 and brine (see e.g.…”

Section: Introductionmentioning

confidence: 99%

Numerical Aspects of Using Vertical Equilibrium Models for Simulating CO2 Sequestration

Ligaarden¹,

Nilsen²

2010

Proceedings

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Storage of CO2 in deep saline aquifers is considered an important means to reduce anthropogenic CO2 in the atmosphere. Assessing the risk of storage operations requires accurate modeling of migration of injected CO2. However, since potential injection sites typically are very large and timescales long, flow simulation with traditional methods from the petroleum industry is often not feasible. Also, CO2 is very mobile and the flow is usually confined to thin layers, which put severe requirements on the vertical grid resolution. Using a vertical equilibrium assumption, the flow of a layer of CO2 can be approximated in terms of its thickness to obtain a 2D simulation model. Although this approach reduces the dimension of the model, important information of the heterogeneities in the underlying 3D medium is preserved. In this paper, we consider the Johansen formation, a candidate for CO2 sequestration, to compare the use of 3D simulations to simulations with a vertical equilibrium 2D model. We discuss numerical aspects of using the different methods, and demonstrate that the vertical equilibrium model provides more accurate results when the vertical grid resolution is low. Moreover, we investigate how averaging of parameters influences the accuracy of the vertically equilibrium solution. Recently, there has been a renewed interest in VE methods as a means to simulate large-scale CO 2 migration, for which a sharp-interface assumption with vertical equilibrium may be reasonable due to

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A Fast 3D Interface Simulator for Steamdrives

Cited by 8 publications

References 23 publications

Research on Numerical Simulation Methods for Reservoirs of Loose Sandstone Considering the Equilibrium Time of Vertical Seepage Flow

Research on Numerical Simulation Methods for Reservoirs of Loose Sandstone Considering the Equilibrium Time of Vertical Seepage Flow

An Eos-Based Numerical Simulation of Thermal Recovery Process Using Unstructured Meshes

Numerical Aspects of Using Vertical Equilibrium Models for Simulating CO2 Sequestration

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