Calibrated dual porosity, dual permeability modeling of fractured reservoirs

Presho, Michael; Wo, Shaochang; Ginting, Victor

doi:10.1016/j.petrol.2011.04.007

Cited by 37 publications

(26 citation statements)

References 16 publications

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“…Substitute Equation (6) to Equations (3) and (4) to obtain the variable-separated Equations (7) and (8):…”

Section: Model Derivation Via the Typical Approachmentioning

confidence: 99%

“…Its computational consumption is very large for solving the two coupled sets of partially differential equations for fluid flows in the matrix and the fracture [5,6], which is not endurable in engineering for analyzing the long-term transient characteristics of flow in fractured porous media. Due to the high computational cost, many analytical solutions have been proposed [7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

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Acceleration of Gas Flow Simulations in Dual-Continuum Porous Media Based on the Mass-Conservation POD Method

Wang

Sun

2017

Energies

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Reduced-order modeling approaches for gas flow in dual-porosity dual-permeability porous media are studied based on the proper orthogonal decomposition (POD) method combined with Galerkin projection. The typical modeling approach for non-porous-medium liquid flow problems is not appropriate for this compressible gas flow in a dual-continuum porous media. The reason is that non-zero mass transfer for the dual-continuum system can be generated artificially via the typical POD projection, violating the mass-conservation nature and causing the failure of the POD modeling. A new POD modeling approach is proposed considering the mass conservation of the whole matrix fracture system. Computation can be accelerated as much as 720 times with high precision (reconstruction errors as slow as 7.69 × 10 −4 %~3.87% for the matrix and 8.27 × 10 −4 %~2.84% for the fracture).

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“…Substitute Equation (6) to Equations (3) and (4) to obtain the variable-separated Equations (7) and (8):…”

Section: Model Derivation Via the Typical Approachmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Acceleration of Gas Flow Simulations in Dual-Continuum Porous Media Based on the Mass-Conservation POD Method

Wang

Sun

2017

Energies

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“…Based on this assumption of coal structure, three types of permeability models have been developed: dual-porosity/single-permeability model, dual-porosity/dual-permeability model, and triple-porosity/dual-permeability model (Wang et al, 2012;Shi and Durucan, 2005;Presho et al, 2011;Warren and Root, 1963;Abdassah and Ershaghi, 1986;Camacho et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

Dynamic diffusion-based multifield coupling model for gas drainage

Liu

Lin

Yang

et al. 2017

Journal of Natural Gas Science and Engineering

100

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“…Applicability of the classic double-porosity model with a constant shape factor to low-permeability reservoir simulation is questionable (Cai et al 2015). It also does not describe discrete fractures, which are the main source of challenge in naturally fractured reservoirs (Chen et al 2008;Presho et al 2011;Soleimani 2016a). History matching of naturally fractured reservoirs becomes more challenging particularly when these models are represented using discrete fracture network (DFN) models in carbonate rocks (Bahrainian et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Naturally fractured hydrocarbon reservoir simulation by elastic fracture modeling

Soleimani

2017

Pet. Sci.

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Accurate fluid flow simulation in geologically complex reservoirs is of particular importance in construction of reservoir simulators. General approaches in naturally fractured reservoir simulation involve use of unstructured grids or a structured grid coupled with locally unstructured grids and discrete fracture models. These methods suffer from drawbacks such as lack of flexibility and of ease of updating. In this study, I combined fracture modeling by elastic gridding which improves flexibility, especially in complex reservoirs. The proposed model revises conventional modeling fractures by hard rigid planes that do not change through production. This is a dubious assumption, especially in reservoirs with a high production rate in the beginning. The proposed elastic fracture modeling considers changes in fracture properties, shape and aperture through the simulation. This strategy is only reliable for naturally fractured reservoirs with high fracture permeability and less permeable matrix and parallel fractures with less cross-connections. Comparison of elastic fracture modeling results with conventional modeling showed that these assumptions will cause production pressure to enlarge fracture apertures and change fracture shapes, which consequently results in lower production compared with what was previously assumed. It is concluded that an elastic gridded model could better simulate reservoir performance.

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Calibrated dual porosity, dual permeability modeling of fractured reservoirs

Cited by 37 publications

References 16 publications

Acceleration of Gas Flow Simulations in Dual-Continuum Porous Media Based on the Mass-Conservation POD Method

Acceleration of Gas Flow Simulations in Dual-Continuum Porous Media Based on the Mass-Conservation POD Method

Dynamic diffusion-based multifield coupling model for gas drainage

Naturally fractured hydrocarbon reservoir simulation by elastic fracture modeling

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