Pressure Behavior of a System Containing Multiple Vertical Fractures = Comportamiento de Presión de un Sistema que Contiene Múltiples Fracturas Verticales

The oil and gas industry has long recognized the inadequacy of existing theories to predict the behavior and outcome of some hydraulic fracturing treatments. Data sets compiled over the last two decades are incompatible with the conventional picture of a single planar hydraulic fracture. These data...

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Autor Principal: Restrepo Restrepo, Dora Patricia
Formato: Trabajo de grado (Bachelor Thesis)
Lenguaje:Desconocido (Unknown)
Publicado: 2008
Materias:
Acceso en línea:http://babel.banrepcultural.org/cdm/ref/collection/p17054coll23/id/73
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spelling ir-p17054coll23-732020-09-29 Pressure Behavior of a System Containing Multiple Vertical Fractures = Comportamiento de Presión de un Sistema que Contiene Múltiples Fracturas Verticales Restrepo Restrepo, Dora Patricia The oil and gas industry has long recognized the inadequacy of existing theories to predict the behavior and outcome of some hydraulic fracturing treatments. Data sets compiled over the last two decades are incompatible with the conventional picture of a single planar hydraulic fracture. These data sets include field studies, laboratory studies and theoretical models. Several field and laboratory observations show very complex fracture paths, multisegmented fractures, branching, asymmetry and the presence of multiple fractures. The purpose of this study is to investigate the pressure behavior of systems containing near wellbore and far field multiple vertical fractures. This objective is achieved by using two analytical models. These newly developed models are used to explore pressure behavior and to generate type curves using the pressure derivative concept. The first new analytical model considers a composite reservoir with the inner zone containing an arbitrary number of dendritic multiple hydraulic fractures and the outer zone showing natural fractures. Transient pressure, derivative and flow regimes of the fractured system are investigated using this model. This study also uses a numerical model to calibrate and validate the analytical model. Pressure transient behavior of multiple fractures is modeled using a full field model (FFM) with a detailed Cartesian local grid refinement (LGR) around the fractures. The model was calibrated and validated using the case of two wing fractures at 180o. Simulations of the two types of multiple fractures, dendritic and parallel, validate some results of the analytical solutions. The TDS technique is also used to analyze the linear and pseudo-radial flow regimes in order to find fracture length, angle between fractures, fracture conductivity and several conventional reservoir parameters, e.g. permeability, wellbore storage and skin.  Multiple fractures create more surface area in direct communication with the wellbore. As a consequence, a greater volume of fluid can be produced from the wellbore per unit time. While fracture treatments continue to be designed using the best tools and techniques available, geometry estimates from fracture models have been difficult to verify. Pressure transient analysis is one of the fracture diagnostic techniques available to fill this knowledge gap, improving our understanding of hydraulic fracture behavior. It is an excellent calibration tool because it lets us evaluate the effective length of the fracture, and determine the appropriate length to use in history matching. Also, regardless of the application, identifying and understanding fracture complexities can lead to improved treatment designs, better completion strategies, and the potential for significant economic rewards through improved well performance and/or reduced completion cost. Análisis de pruebas de presión en estado transiente; Far field multiple fractures; Fracturas hidráulicas; Fracturas múltiples cercanas al pozo; Fracturas múltiples en la región lejana del pozo; Hydraulic fractures; Local grid refinement; Modelo analítico de fracturas múltiples; Modelo numérico para fracturas múltiples; Multiple fractures analytical model; Multiple fractures numerical model; Natural fractures; Naturally fractured reservoirs; Near wellbore multiple fractures; Refinamiento de malla; Técnica directa de Tiab (TDS); Tiab's direct technique (TDS); Transient pressure analysis; Yacimientos naturalmente fracturados Tecnología; Tecnología / Ingeniería y operaciones afines 2008 PDF Tesis ENG - Inglés Colfuturo © Derechos reservados del autor http://babel.banrepcultural.org/cdm/ref/collection/p17054coll23/id/73
institution Biblioteca Virtual Banco de la República - Colecciones digitales
collection Custom
language Desconocido (Unknown)
topic Análisis de pruebas de presión en estado transiente; Far field multiple fractures; Fracturas hidráulicas; Fracturas múltiples cercanas al pozo; Fracturas múltiples en la región lejana del pozo; Hydraulic fractures; Local grid refinement; Modelo analítico de fracturas múltiples; Modelo numérico para fracturas múltiples; Multiple fractures analytical model; Multiple fractures numerical model; Natural fractures; Naturally fractured reservoirs; Near wellbore multiple fractures; Refinamiento de malla; Técnica directa de Tiab (TDS); Tiab's direct technique (TDS); Transient pressure analysis; Yacimientos naturalmente fracturados
Tecnología; Tecnología / Ingeniería y operaciones afines
spellingShingle Análisis de pruebas de presión en estado transiente; Far field multiple fractures; Fracturas hidráulicas; Fracturas múltiples cercanas al pozo; Fracturas múltiples en la región lejana del pozo; Hydraulic fractures; Local grid refinement; Modelo analítico de fracturas múltiples; Modelo numérico para fracturas múltiples; Multiple fractures analytical model; Multiple fractures numerical model; Natural fractures; Naturally fractured reservoirs; Near wellbore multiple fractures; Refinamiento de malla; Técnica directa de Tiab (TDS); Tiab's direct technique (TDS); Transient pressure analysis; Yacimientos naturalmente fracturados
Tecnología; Tecnología / Ingeniería y operaciones afines
Restrepo Restrepo, Dora Patricia
Pressure Behavior of a System Containing Multiple Vertical Fractures = Comportamiento de Presión de un Sistema que Contiene Múltiples Fracturas Verticales
description The oil and gas industry has long recognized the inadequacy of existing theories to predict the behavior and outcome of some hydraulic fracturing treatments. Data sets compiled over the last two decades are incompatible with the conventional picture of a single planar hydraulic fracture. These data sets include field studies, laboratory studies and theoretical models. Several field and laboratory observations show very complex fracture paths, multisegmented fractures, branching, asymmetry and the presence of multiple fractures. The purpose of this study is to investigate the pressure behavior of systems containing near wellbore and far field multiple vertical fractures. This objective is achieved by using two analytical models. These newly developed models are used to explore pressure behavior and to generate type curves using the pressure derivative concept. The first new analytical model considers a composite reservoir with the inner zone containing an arbitrary number of dendritic multiple hydraulic fractures and the outer zone showing natural fractures. Transient pressure, derivative and flow regimes of the fractured system are investigated using this model. This study also uses a numerical model to calibrate and validate the analytical model. Pressure transient behavior of multiple fractures is modeled using a full field model (FFM) with a detailed Cartesian local grid refinement (LGR) around the fractures. The model was calibrated and validated using the case of two wing fractures at 180o. Simulations of the two types of multiple fractures, dendritic and parallel, validate some results of the analytical solutions. The TDS technique is also used to analyze the linear and pseudo-radial flow regimes in order to find fracture length, angle between fractures, fracture conductivity and several conventional reservoir parameters, e.g. permeability, wellbore storage and skin.  Multiple fractures create more surface area in direct communication with the wellbore. As a consequence, a greater volume of fluid can be produced from the wellbore per unit time. While fracture treatments continue to be designed using the best tools and techniques available, geometry estimates from fracture models have been difficult to verify. Pressure transient analysis is one of the fracture diagnostic techniques available to fill this knowledge gap, improving our understanding of hydraulic fracture behavior. It is an excellent calibration tool because it lets us evaluate the effective length of the fracture, and determine the appropriate length to use in history matching. Also, regardless of the application, identifying and understanding fracture complexities can lead to improved treatment designs, better completion strategies, and the potential for significant economic rewards through improved well performance and/or reduced completion cost.
format Trabajo de grado (Bachelor Thesis)
author Restrepo Restrepo, Dora Patricia
author_facet Restrepo Restrepo, Dora Patricia
author_sort Restrepo Restrepo, Dora Patricia
title Pressure Behavior of a System Containing Multiple Vertical Fractures = Comportamiento de Presión de un Sistema que Contiene Múltiples Fracturas Verticales
title_short Pressure Behavior of a System Containing Multiple Vertical Fractures = Comportamiento de Presión de un Sistema que Contiene Múltiples Fracturas Verticales
title_full Pressure Behavior of a System Containing Multiple Vertical Fractures = Comportamiento de Presión de un Sistema que Contiene Múltiples Fracturas Verticales
title_fullStr Pressure Behavior of a System Containing Multiple Vertical Fractures = Comportamiento de Presión de un Sistema que Contiene Múltiples Fracturas Verticales
title_full_unstemmed Pressure Behavior of a System Containing Multiple Vertical Fractures = Comportamiento de Presión de un Sistema que Contiene Múltiples Fracturas Verticales
title_sort pressure behavior of a system containing multiple vertical fractures = comportamiento de presión de un sistema que contiene múltiples fracturas verticales
publishDate 2008
url http://babel.banrepcultural.org/cdm/ref/collection/p17054coll23/id/73
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score 11,489418