Multiphase poroelastic modeling in semi-space for deformable reservoirs

Yin, Shunde; Dusseault, Maurice B.; Rothenburg, L.

doi:10.1016/j.petrol.2008.12.003

Cited by 19 publications

(5 citation statements)

References 32 publications

(33 reference statements)

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“…Later, Biot's theory was extended to account for non-isothermal conditions (28,29) , thence referred to as the theory of thermoporoelasticity. This has been successfully applied in solving some problems in petroleum engineering (30)(31)(32)(33)(34)(17)(18)(19) .…”

Section: Multiphase Thermoporoelasticity and The Finite-element Methomentioning

confidence: 99%

“…Hettema et al (16) demonstrate that accurate depletion-induced subsidence modelling requires understanding of the reservoir and surrounding rock mechanical response to the depletion. Yin et al (17) pointed out that the limited reservoir outer domain included in the FEM model leads to inaccuracies which may be called "wrong predictions" of ground surface movement.…”

Section: Introductionmentioning

confidence: 99%

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Fully Coupled Numerical Modelling of Ground Surface Uplift in Steam Injection

Yin

Dusseault

Rothenburg

2010

Journal of Canadian Petroleum Technology

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In enhanced oil recovery, steam injection involves high stresses, pressures, temperatures and volume changes. Traditional reservoir simulation fails to predict associated transient ground surface movements because it does not consider coupled geomechanical effects. We present a fully-coupled, thermal half-space model using a hybrid DDFEM method, in which a simultaneous finite element method (FEM) solution is adopted for the reservoir and the surrounding thermally affected zone, and a displacement discontinuity (DD) method used for the elastic, non-thermal zone. This approach provides transient ground surface movements in a natural manner. Introduction Enhanced oil recovery (EOR) methods involving high pressures and steam injection (steamflooding, cyclic steam stimulation, steam-assisted gravity drainage) are accompanied by large volume changes in the reservoir horizon. Ground movements in excess of 300 mm heave or subsidence are registered during injection and production cycles. Reservoir simulation cannot address this phenomena without due consideration of geomechanical effects. The earliest theory to account for coupled pore fluid behaviour and soil deformation was the Terzaghi one-dimensional consolidation theory, still used in soil mechanics. Since Biot's theory of consolidation(1) was introduced to petroleum engineering by Geertsma(2) with the coined term "poroelasticity,?? coupled analysis of petroleum geomechanics effects has been widely advocated(3-5). Coupled reservoir simulation can be carried out in a loosely coupled fashion(6, 7) or with a tightly coupled scheme(8-10), and comparisons of different coupling techniques can be found (11, 12). In reservoir simulation, a coupled analysis demands simultaneous solution of changes in (p,T) and fluid flow as well as stress and strain. Computing challenges persist in large-scale 3D applications to real cases where there are a huge number of equations to solve iteratively; e.g. thermo-poro-elasto-plastic analyses involving several simultaneous diffusion processes (Darcy, Fourier, Fick). In regions of large pressure, temperature, concentration or stress gradients, accurate solution requires small-scale discretization. If the problem has strong non-linearity, such as changes in permeability, compressibility, or other properties arising from changes in pressure and effective stress, the computational effort increases by several orders of magnitude because multiple iteration loops are needed. These issues mean that accurate analysis of realistic complex 3D problems is challenging, and will so remain as we seek to solve larger and larger coupled problems involving non-linear responses.

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Section: Multiphase Thermoporoelasticity and The Finite-element Methomentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Fully Coupled Numerical Modelling of Ground Surface Uplift in Steam Injection

Yin

Dusseault

Rothenburg

2010

Journal of Canadian Petroleum Technology

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“…The deformation processes manifested in productive reservoirs during technological measures to improve reservoir permeability are investigated. [1][2][3]. Basically, they show that the effectiveness of intensification processes depends on the ratio of stress values, changes in reservoir volume and reservoir pressure.…”

Section: Introductionmentioning

confidence: 99%

Application Analysis of Flow-Deflecting Technology Based on a Biopolymer System

Bissembayeva,

M.RESHMA

2023

YSJ

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Annotation. At present, many oil fields are on the third and fourth stages of development, which are characterized by significant volumes of associated water production and low degree of depletion of oil reserves from individual sections of the deposit. The volume of oil produced from the deposits is constantly decreased. This is due to the influence on the operation of wells of complex geological structures of productive formations, and fluid compositions that manifest themselves in production processes. In dense reservoirs with high geological heterogeneity, separate undeveloped areas and areas that are not covered by flooding remain in the development process. In these conditions, in order to increase the efficiency of flooding systems, the task is to maximize the coverage of reservoirs by exposure, which can be achieved by introducing water into low-permeable oil-saturated intervals. In this case, the elastic-capillary-cyclic method and the method of changing the direction of filtration fluid flows in the reservoir have significant possibilities, both in area and in the section. In this case, the elastic-capillary-cyclic method and the method of changing the direction of filtration fluid flows in the reservoir have significant possibilities, both in area and in section. One of the most effective and promising methods of stabilizing oil production is physics-chemical technology based on the application of injection of polymer compositions. This paper provides an analysis of the application of the technology of redistribution of filtration flows in a multilayer field. This technology used a biopolymer-based chemical composition. To study the effect of the biopolymer system on the oil production process, an analysis of changes in the technological parameters of the reacting production wells was carried out. The article provides an assessment of the technological effectiveness of methods for changing the direction of filtration flows in the reservoir based on the analysis of the results of the use of biopolymer compositions at one of Mangystau deposits. Keywords: Well, oil deposit, influence on the formation, flow-deflecting technology, filtration flow, polymer composition, biopolymer system, efficiency

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“…These are the formation frac gradient response to the borehole inclination angle; optimal and minimum injection pressure for formations with different filtration properties; regular changes in the wellhead pressure and the bottom-hole pressure in the exploitation/injection wells; and incomplete well surveys, which led to a decrease in the efficiency of producing hard-to-recover resources. Deformation processes that occur in active reservoirs at the time of mechanical improvement of formation permeability were investigated in [1][2][3]. They show that beneficial effect of intensifying operations is tied to the relation of mechanical stresses, changes in the reservoir volume and reservoir pressure.…”

Section: Introductionmentioning

confidence: 99%

Well Flow Rates at Secondary Well Stimulation

Bissembayeva¹,

Aissayeva²,

Zholbassarova³

et al. 2018

IJET

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With the number of new deposits growing, the number of deposits with complex geological structures (reservoirs with low permeability, non-Newtonian fluids and highly dissected geological frameworks) containing hard-to-recover oil grows as well. This type of deposits requires science-based methods and reservoir impact facilities to design and use in order to boost hydrocarbon production, increase the oil recovery factor, and improve the system of hydrocarbon deposit development and exploitation.Thus, the purpose of this article is to improve the methodological approach to determining the prime indicators of stimulated deposit development using mathematical process modeling, statistical methods, and field setting methods.

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Multiphase poroelastic modeling in semi-space for deformable reservoirs

Cited by 19 publications

References 32 publications

Fully Coupled Numerical Modelling of Ground Surface Uplift in Steam Injection

Fully Coupled Numerical Modelling of Ground Surface Uplift in Steam Injection

Application Analysis of Flow-Deflecting Technology Based on a Biopolymer System

Well Flow Rates at Secondary Well Stimulation

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