Evaluation of CO2 sequestration capacity in complex-boundary-shape shale gas reservoirs using projection-based embedded discrete fracture model (pEDFM)

Liu, Hao; Rao, Xiang; Xiong, Hao

doi:10.1016/j.fuel.2020.118201

Cited by 40 publications

(24 citation statements)

References 35 publications

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“…The rock in nature commonly contains massive inherent discontinuities which include the layers, joints, faults, foliations, and cleavages. The integrity and mechanical behaviors of rock are all determined by those initial defects [1][2][3][27][28][29]. Interbed, as a typical geological discontinuity, is soundly developed in many kinds of rocks, such as marble, shale, mudstone, and slate.…”

Section: Discussionmentioning

confidence: 99%

Full-Field Deformation Characteristics of Anisotropic Marble under Compression Revealed by 3D Digital Image Correlation

Wang

Zhu²,

Zhang

et al. 2021

Lithosphere

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This work is aimed at revealing the anisotropic full-field displacement and the progressive failure behaviors of interbedded marble under uniaxial compression using a three-dimensional digital image correlation (3D DIC) technique. The effects of the interbed orientation on the field displacement and strain pattern and the crack evolution were analyzed qualitatively and quantitatively. Testing results show that different stress-strain responses can be generated depending on the interbed orientation, and the interbeds influence the localized deformation and high strain concentration pattern. The field displacement evolution curves present different patterns and are impacted by the localized deformation. In addition, the strain localization takes place progressively and develops at a lower rate for rock with 0° and 90° interbed than those of 30° and 60° interbed rock. The quick shear-sliding along the interbed leads to the minimum strength of rock having 30° interbed orientation. It is suggested that rock anisotropic field deformation is structure dependent.

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Section: Discussionmentioning

confidence: 99%

Full-Field Deformation Characteristics of Anisotropic Marble under Compression Revealed by 3D Digital Image Correlation

Wang

Zhu²,

Zhang

et al. 2021

Lithosphere

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“…Then, we apply the finite volume method to discretize Equations ( 1), ( 4), (5), and (6) and adopt the fully implicit scheme to solve these [24]. When the capillary force is ignored, they are…”

Section: Finite Volume-based Discretization Of Governingmentioning

confidence: 99%

History Matching and Production Prediction of Steam Drive Reservoir Based on Data-Space Inversion Method

Gong

Huang

et al. 2021

Geofluids

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Recently, a data-space inversion (DSI) method has been proposed and successfully applied for the history matching and production optimization for conventional waterflooding reservoir. Under Bayesian framework, DSI can directly and effectively obtain posterior flow predictions without inverting any geological parameters of reservoir model. In this paper, we integrate the numerical simulation model with DSI method for rapid history matching and production prediction for steam flooding reservoir. Based on the finite volume method, a numerical simulation model is established and it is used to provide production data samples for DSI by the simulation of ensemble geological models. DSI-based production prediction model is then established and get trained by the historical data through the random maximum likelihood principle. The posterior production estimation can be obtained fast by training the DSI-based model with history data, but without any posterior geological parameters. The proposed method is applied for history matching and estimating production performance prediction in some numerical examples and a field case, and the results prove its effectiveness and reliability.

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“…Hydraulic fracturing technology can achieve the extraction of hydrocarbon from unconventional reservoirs at a low cost and improve the well performance significantly, which has been attracting considerable attention in recent years [1][2][3][4][5][6][7]. To generate highly conductive hydraulic fractures to increase well productivity, almost thousands of fracturing fluids are pumped into the reservoir [8].…”

Section: Introductionmentioning

confidence: 99%

A Hybrid Model for Simulating Fracturing Fluid Flowback in Tight Sandstone Gas Wells considering a Three-Dimensional Discrete Fracture

Wang¹,

Bai²,

Xu³

et al. 2021

Lithosphere

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Two-phase (gas+water) flow is quite common in tight sandstone gas reservoirs during flowback and early-time production periods. However, many analytical models are restricted to single-phase flow problems and three-dimensional fracture characteristics are seldom considered. Numerical simulations are good choices for this problem, but it is time consuming in gridding and simulating. This paper presents a comprehensive hybrid model to characterize two-phase flow behaviour and predict the production performance of a fractured tight gas well with a three-dimensional discrete fracture. In this approach, the hydraulic fracture is discretized into several panels and the transient flow equation is solved by the finite difference method numerically. A three-dimensional volumetric source function and superposition principle are deployed to capture the flow behaviour in the reservoir analytically. The transient responses are obtained by coupling the flow in the reservoir and three-dimensional discrete fracture dynamically. The accuracy and practicability of the proposed model are validated by the numerical simulation result. The results indicate that the proposed model is highly efficient and precise in simulating the gas/water two-phase flow and evaluating the early-time production performance of fractured tight sandstone gas wells considering a three-dimensional discrete fracture. The results also show that the gas production rate will be overestimated without considering the two-phase flow in the hydraulic fracture. In addition, the influences of fracture permeability, fracture half-length, and matrix permeability on production performance are significant. The gas production rate will be higher with larger fracture permeability at the early production period, but the production curves will merge after fracturing fluid flows back. A larger fracture half-length and matrix permeability can enhance the gas production rate.

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Evaluation of CO2 sequestration capacity in complex-boundary-shape shale gas reservoirs using projection-based embedded discrete fracture model (pEDFM)

Cited by 40 publications

References 35 publications

Full-Field Deformation Characteristics of Anisotropic Marble under Compression Revealed by 3D Digital Image Correlation

Full-Field Deformation Characteristics of Anisotropic Marble under Compression Revealed by 3D Digital Image Correlation

History Matching and Production Prediction of Steam Drive Reservoir Based on Data-Space Inversion Method

A Hybrid Model for Simulating Fracturing Fluid Flowback in Tight Sandstone Gas Wells considering a Three-Dimensional Discrete Fracture

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