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Modelling the Evolution of Natural Fracture Networks

2020-09-18 Technology & Engineering
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Release : 2020-09-18
Genre : Technology & Engineering
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Book Rating : 140/5 ( reviews)

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Book Synopsis Modelling the Evolution of Natural Fracture Networks by : Michael John Welch

Download or read book Modelling the Evolution of Natural Fracture Networks written by Michael John Welch. This book was released on 2020-09-18. Available in PDF, EPUB and Kindle. Book excerpt: This book presents and describes an innovative method to simulate the growth of natural fractural networks in different geological environments, based on their geological history and fundamental geomechanical principles. The book develops techniques to simulate the growth and interaction of large populations of layer-bound fracture directly, based on linear elastic fracture mechanics and subcritical propagation theory. It demonstrates how to use these techniques to model the nucleation, propagation and interaction of layer-bound fractures in different orientations around large scale geological structures, based on the geological history of the structures. It also explains how to use these techniques to build more accurate discrete fracture network (DFN) models at a reasonable computational cost. These models can explain many of the properties of natural fracture networks observed in outcrops, using actual outcrop examples. Finally, the book demonstrates how it can be incorporated into flow modelling workflows using subsurface examples from the hydrocarbon and geothermal industries. Modelling the Evolution of Natural Fracture Networks will be of interest to anyone curious about understanding and predicting the evolution of complex natural fracture networks across large geological structures. It will be helpful to those modelling fluid flow through fractures, or the geomechanical impact of fracture networks, in the hydrocarbon, geothermal, CO2 sequestration, groundwater and engineering industries.

Modeling Fluid Migration Through Physically-based Fracture Networks

1993 Fluid dynamics
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Release : 1993
Genre : Fluid dynamics
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Book Synopsis Modeling Fluid Migration Through Physically-based Fracture Networks by : Carl Edward Renshaw

Download or read book Modeling Fluid Migration Through Physically-based Fracture Networks written by Carl Edward Renshaw. This book was released on 1993. Available in PDF, EPUB and Kindle. Book excerpt:

Discrete Fracture Network Modeling of Hydraulic Stimulation

2013-06-15 Technology & Engineering
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Release : 2013-06-15
Genre : Technology & Engineering
Kind : eBook
Book Rating : 836/5 ( reviews)

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Book Synopsis Discrete Fracture Network Modeling of Hydraulic Stimulation by : Mark W. McClure

Download or read book Discrete Fracture Network Modeling of Hydraulic Stimulation written by Mark W. McClure. This book was released on 2013-06-15. Available in PDF, EPUB and Kindle. Book excerpt: Discrete Fracture Network Modeling of Hydraulic Stimulation describes the development and testing of a model that couples fluid-flow, deformation, friction weakening, and permeability evolution in large, complex two-dimensional discrete fracture networks. The model can be used to explore the behavior of hydraulic stimulation in settings where matrix permeability is low and preexisting fractures play an important role, such as Enhanced Geothermal Systems and gas shale. Used also to describe pure shear stimulation, mixed-mechanism stimulation, or pure opening-mode stimulation. A variety of novel techniques to ensure efficiency and realistic model behavior are implemented, and tested. The simulation methodology can also be used as an efficient method for directly solving quasistatic fracture contact problems. Results show how stresses induced by fracture deformation during stimulation directly impact the mechanism of propagation and the resulting fracture network.

Fractal Modeling of Natural Fracture Networks. Final Report, June 1994--June 1995

1996
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Release : 1996
Genre :
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Book Synopsis Fractal Modeling of Natural Fracture Networks. Final Report, June 1994--June 1995 by :

Download or read book Fractal Modeling of Natural Fracture Networks. Final Report, June 1994--June 1995 written by . This book was released on 1996. Available in PDF, EPUB and Kindle. Book excerpt: Recovery from naturally fractured, tight-gas reservoirs is controlled by the fracture network. Reliable characterization of the actual fracture network in the reservoir is severely limited. The location and orientation of fractures intersecting the borehole can be determined, but the length of these fractures cannot be unambiguously determined. Fracture networks can be determined for outcrops, but there is little reason to believe that the network in the reservoir should be identical because of the differences in stresses and history. Because of the lack of detailed information about the actual fracture network, modeling methods must represent the porosity and permeability associated with the fracture network, as accurately as possible with very little apriori information. Three rather different types of approaches have been used: (1) dual porosity simulations; (2) 'stochastic' modeling of fracture networks, and (3) fractal modeling of fracture networks. Stochastic models which assume a variety of probability distributions of fracture characteristics have been used with some success in modeling fracture networks. The advantage of these stochastic models over the dual porosity simulations is that real fracture heterogeneities are included in the modeling process. In the sections provided in this paper the authors will present fractal analysis of the MWX site, using the box-counting procedure; (2) review evidence testing the fractal nature of fracture distributions and discuss the advantages of using their fractal analysis over a stochastic analysis; (3) present an efficient algorithm for producing a self-similar fracture networks which mimic the real MWX outcrop fracture network.

Discrete Fracture Network Modeling of Hydraulic Stimulation

2013-06-19 Science
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Release : 2013-06-19
Genre : Science
Kind : eBook
Book Rating : 849/5 ( reviews)

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Book Synopsis Discrete Fracture Network Modeling of Hydraulic Stimulation by : Mark McClure

Download or read book Discrete Fracture Network Modeling of Hydraulic Stimulation written by Mark McClure. This book was released on 2013-06-19. Available in PDF, EPUB and Kindle. Book excerpt: Discrete Fracture Network Modeling of Hydraulic Stimulation describes the development and testing of a model that couples fluid-flow, deformation, friction weakening, and permeability evolution in large, complex two-dimensional discrete fracture networks. The model can be used to explore the behavior of hydraulic stimulation in settings where matrix permeability is low and preexisting fractures play an important role, such as Enhanced Geothermal Systems and gas shale. Used also to describe pure shear stimulation, mixed-mechanism stimulation, or pure opening-mode stimulation. A variety of novel techniques to ensure efficiency and realistic model behavior are implemented, and tested. The simulation methodology can also be used as an efficient method for directly solving quasistatic fracture contact problems. Results show how stresses induced by fracture deformation during stimulation directly impact the mechanism of propagation and the resulting fracture network.

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