Simulación de la interacción entre fracturas hidráulicas y fracturas naturales con aplicación de daño continuo
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Universidad Industrial de Santander
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El concepto de daño continuo es usado para estudiar la interacción entre fracturas hidráulicas y fracturas naturales a través del planteamiento de un modelo, cuyo objetivo es representar el camino de propagación y la relación entre estos dos tipos de fracturas, así como, predecir su complejo comportamiento sin la necesidad de predefinir su dirección como ocurre en otras aplicaciones de elementos finitos, proporcionando resultados más consistentes con el comportamiento físico del fenómeno. El enfoque usa simulaciones de elementos finitos a través del software Abaqus para modelar el fracturamiento por daño o el proceso de fracturamiento por propagación de daño en una roca. El modelado del fenómeno se desarrolla en dos dimensiones (2D) de manera que la fractura será representada por una línea y el frente de fractura por un punto. Se considera comportamiento constitutivo no-lineal, deformación finita, deformación dependiente del tiempo, deformación hardening y softening, y deformación basada en la evolución del daño en compresión y tensión.
The continuum damage concept is used to study the interaction between hydraulic fractures and natural fractures through a model, whose objective is to represent the path of propagation and the relationship between these two types of fractures, as well as predict their complex behavior without the need to predefine its direction as it occurs in other applications of finite elements, providing results more consistent with the physical behavior of the phenomenon. The approach uses finite element simulations through Abaqus software to model damage fracturing or fracturing process by damage propagation in a rock. The modeling the phenomenon develops in two dimensional (2D) so that the fracture will be represented by a line and the crack front by a point. It considers nonlinear constitutive behavior, finite strain, time-dependent deformation, strain hardening and softening, and strain based damage evolution in compression and tension.
The continuum damage concept is used to study the interaction between hydraulic fractures and natural fractures through a model, whose objective is to represent the path of propagation and the relationship between these two types of fractures, as well as predict their complex behavior without the need to predefine its direction as it occurs in other applications of finite elements, providing results more consistent with the physical behavior of the phenomenon. The approach uses finite element simulations through Abaqus software to model damage fracturing or fracturing process by damage propagation in a rock. The modeling the phenomenon develops in two dimensional (2D) so that the fracture will be represented by a line and the crack front by a point. It considers nonlinear constitutive behavior, finite strain, time-dependent deformation, strain hardening and softening, and strain based damage evolution in compression and tension.
Keywords
Complex fracture network, continuum damage, hydraulic fractures, natural fractures, stiffness, Red de fractura compleja, daño continuo, fracturas hidráulicas, fracturas naturales, rigidez