Simulations of underground structures subjected to dynamic loading using the distinct element method

Morris, Joseph P.; Rubin, M. B.; Blair, S.C.; Glenn, L. A.; Heuzé, F.E.

doi:10.1108/02644400410519848

Cited by 43 publications

(44 citation statements)

References 31 publications

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“…Many models have been developed in the field of computational fracture mechanics, such as linear and nonlinear elastic fracture mechanics based methods (Bittencourt et al, 1996;Ingraffea and Manu, 1980;Swenson and Ingraffea, 1988), the extended finite element method (XFEM) (Belytschko and Black, 1999;Karihaloo and Xiao, 2003;Melenk and Babuška, 1996;Sukumar and Prévost, 2003), the cohesive-zone model (Bocca et al, 1991;de Borst, 2003) and meshless methods, such as the element free Galerkin method (EFGM) (Bordas et al, 2008;Fleming et al, 1997). Moreover, discontinuumbased numerical methods that are originally used for granular materials, such as the smoothed particle hydrodynamics (SPH) method (Das and Cleary, 2010;Gray et al, 2001;Ma et al, 2011) and the discrete element method (DEM) (Cundall and Strack, 1979;Morris et al, 2004;Shi and Goodman, 1985) have also become increasingly popular in fracture modelling. In actual numerical simulations of engineering applications, the choice of modelling approach should be based on the likely failure mechanism of the material, i.e.…”

Section: Methodsmentioning

confidence: 99%

A numerical study of fracture spacing and through-going fracture formation in layered rocks

Guo

Latham

Xiang

2017

International Journal of Solids and Structures

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Naturally fractured reservoirs are an important source of hydrocarbons.Computational models capable of generating fracture geometries according to geomechanical principles offer a means to create a numerical representation of a more realistic rock mass structure. In this work, the combined finite-discrete element method is applied to investigate fracture patterns in layered rocks. First, a three-layer model undergoing layer normal compression is simulated with the aim of examining the controls on fracture spacing in layered rocks. Second, a seven-layer model with low competence contrast is modelled under direct tension parallel to the layering and bending conditions with the focus on investigating through-going fracture formation across layer interfaces. The numerical results give an insight into the understanding of various mechanisms that contribute to fracture pattern development in layered rocks.

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Section: Methodsmentioning

confidence: 99%

A numerical study of fracture spacing and through-going fracture formation in layered rocks

Guo

Latham

Xiang

2017

International Journal of Solids and Structures

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“…In the present study, we have accomplished this extension by developing an interface between NUFT and LDEC, a distinct-element geomechanical model developed by Morris et al (2002Morris et al ( , 2003. This interface facilitates mapping the injection-induced pressure perturbation along and above the reservoir/cap-rock contact into the corresponding evolution of effective stress and microfracture apertures.…”

Section: Methodsmentioning

confidence: 99%

Co2 Capture Project - An Integrated, Collaborative Technology Development Project for Next Generation Co2 Separation, Capture and Geologic Sequestration

Kerr¹

2003

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The CO 2 Capture Project (CCP) is a joint industry project, funded by eight energy companies (BP, ChevronTexaco, EnCana, Eni, Norsk Hydro, Shell, Statoil, and Suncor) and three government agencies (European Union {DG Res & DG Tren}, Norway {Klimatek} and the U.S.A. {Department of Energy. The project objective is to develop new technologies, which could reduce the cost of CO 2 capture and geologic storage by 50% for retrofit to existing plants and 75% for new-build plants. Technologies are to be developed to "proof of concept" stage by the end of 2003. The project budget is approximately $24 million over 3 years and the work program is divided into eight major activity areas:• Baseline Design and Cost Estimation -defined the uncontrolled emissions from each facility and estimate the cost of abatement in $/tonne CO 2 .• Capture Technology, Post Combustion: technologies, which can remove CO 2 from exhaust gases after combustion.• Capture Technology, Oxyfuel: where oxygen is separated from the air and then burned with hydrocarbons to produce an exhaust with high CO 2 for storage.• Capture Technology, Pre -Combustion: in which, natural gas and petroleum coke are converted to hydrogen and CO 2 in a reformer/gasifier.• Common Economic Model/Technology Screening : analysis and evaluation of each technology applied to the scenarios to provide meaningful and consistent comparison.• New Technology Cost Estimation: on a consistent basis with the baseline above, to demonstrate cost reductions.• Geologic Storage, Monitoring and Verification (SMV): providing assurance that CO 2 can be safely stored in geologic formations over the long term.• Non-Technical: project management, communication of results and a review of current policies and incentives governing CO 2 capture and storage.Technology development work dominated the past six months of the project. Numerous studies are making substantial progress towards their goals. Some technologies are emerging as preferred over others. Pre-combustion Decarbonization (hydrogen fuel) technologies are showing good progress and may be able to meet the CCP's aggressive cost reduction targets for new-build plants. Chemical looping to produce oxygen for oxyfuel combustion shows real promise. As expected, post-combustion technologies are emerging as higher cost options that may have niche roles. Storage, measurement, and verification studies are moving rapidly forward. Hyper-spectral geo-botanical measurements may be an inexpensive and non-intrusive method for long-term monitoring. Modeling studies suggest that primary leakage routes from CO 2 storage sites may be along wellbores in areas disturbed by earlier oil and gas operations. This is good news because old wells are usually mapped and can be repaired during the site preparation process.Many studies are nearing completion or have been completed. Their preliminary results are summarized in the attached report and presented in detail in the attached appendices.4 Technologies are to be developed to "proof of concept" stage by t...

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“…This topic is too detailed to cover even cursorily here, and the reader is referred to a number of works on dynamic loading of geomaterials [11], [17][18][19][20][21][22][23][24][25].…”

Section: Near--source Signal Propagationmentioning

confidence: 99%

Creating the link between micro-seismic observations and hydro-mechanical changes in the reservoir

Johnson¹

2012

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Simulations of underground structures subjected to dynamic loading using the distinct element method

Abstract: This report has been reproduced directly from the best available copy.

Cited by 43 publications

References 31 publications

A numerical study of fracture spacing and through-going fracture formation in layered rocks

A numerical study of fracture spacing and through-going fracture formation in layered rocks

Co2 Capture Project - An Integrated, Collaborative Technology Development Project for Next Generation Co2 Separation, Capture and Geologic Sequestration

Creating the link between micro-seismic observations and hydro-mechanical changes in the reservoir

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