1,720,953 research outputs found
Characterization of the C5 Unit of the Carbonera Formation Through Seismic Attribute Interpretation and Analysis for the Generation of an Integrated Geological Model in the Puerto Gaitán Area, Meta.
No full textDigitalEste estudio se centra en la caracterización de la Unidad C5 de la Formación Carbonera, ubicada en la Cuenca de los Llanos Orientales, específicamente en el área de Puerto Gaitán, Meta, Colombia. Para ello, se aplicaron técnicas avanzadas de interpretación sísmica y análisis de atributos como coherencia e impedancia acústica, con el objetivo de construir un modelo geológico integrado que permita identificar estructuras y facies sedimentarias de interés.
La metodología incluyó una recopilación sistemática de datos geológicos y sísmicos, correlación de pozos, calibración de señales sísmicas y generación de horizontes representativos que delimitan los principales contactos de la unidad. Estos pasos facilitaron la identificación de patrones estratigráficos caracterizados por alternancias de lentes de arenisca y niveles de lutitas o shales, los cuales se asocian con ambientes depositacionales de tipo canal o abanico.
La interpretación detallada permitió diferenciar facies sedimentarias arenosas, lodolíticas y arcillosas, lo que resultó esencial tanto para el diseño de futuras campañas de exploración como para fortalecer investigaciones con fines académicos. En este contexto, el análisis sísmico geológico integrado no solo aporta una visión más clara del comportamiento interno de la Unidad C5, sino que también contribuye al entendimiento de su potencial como objetivo hidrocarburífero. El estudio proporciona, por tanto, herramientas clave para orientar nuevas perforaciones, minimizar riesgos exploratorios y enriquecer el conocimiento geológico regional. Asimismo, destaca la importancia de combinar datos sísmicos y de pozo para obtener una interpretación más precisa, robusta y útil, tanto desde una perspectiva técnica como formativa.
En conclusión, los resultados obtenidos refuerzan el valor de la Unidad C5 dentro del contexto exploratorio de la Formación Carbonera, al tiempo que ofrecen una base sólida para futuras investigaciones y aplicaciones en la industria energética.This study focuses on the characterization of Unit C5 of the Carbonera Formation, located in the Llanos Orientales Basin, specifically in the Puerto Gaitán area, Meta, Colombia. Advanced seismic interpretation techniques and seismic attribute analysis, such as coherence and acoustic impedance, were applied to construct an integrated geological model aimed at identifying structures and sedimentary facies of interest.
The methodology involved systematic collection of geological and seismic data, well correlation, seismic signal calibration, and generation of representative horizons that define the main boundaries of the unit. These steps enabled the identification of stratigraphic patterns characterized by alternating sandstone lenses and shale or mudstone layers, which are associated with depositional environments such as channels or fan systems.
Detailed interpretation allowed differentiation of sandy, muddy, and clay-rich sedimentary facies, which proved essential for both the planning of future exploration campaigns and the advancement of academic research. In this context, the integrated seismic and geological analysis not only provides a clearer understanding of the internal behavior of Unit C5 but also contributes to assessing its potential as a hydrocarbon target. The study, therefore, offers key tools for guiding new drilling efforts, minimizing exploration risks, and enriching regional geological knowledge. Additionally, it highlights the importance of combining seismic and well data to achieve a more accurate, robust, and practical interpretation, both from a technical and educational perspective.
In conclusion, the results strengthen the significance of Unit C5 within the exploratory framework of the Carbonera Formation, while offering a solid foundation for future research and applications in the energy industry.Introducción 22
Objetivos 23
Objetivo General 23
Objetivos Específicos 23
Estudios Anteriores 24
Marco de Referencia 26
Área de Estudio 26
Marco Geológico Regional 27
Estratigrafía de la Cuenca Llanos Orientales 29
Paleozoico.. 30
Mesozoico. 30
Marco Teórico 34
Registros Eléctrico 34
Tipos de Registros de Pozos 35
Relación Espacio de Acomodación vs Suministro de Sedimentación A/S 36
Atributos Sísmicos 38
Metodología 40
Recopilación de Datos 41
Búsqueda Bibliográfica 41
Fuentes Primarias 41
Registros de Pozo y Bloques Sísmicos 42
Carga de Datos. 42
Correlación de los Pozos 43
Caracterización por Electro Facies 45
Determinación de la Relación A/S 47
Resolución Sísmica 48
Amarre de Pozo y Sismograma Sintético 50
Convolución con la Onda Sísmica 52
Generación de Horizontes Sísmicos 54
Correlación de Pozos y Horizontes Sísmicos 55
Método de “Seguir” el Zero Crossing 56
Proceso de Interpretación Sísmica 56
Creación de Superficies 57
Selección de Atributo Sísmico 58
Atributo de Amplitud 59
Principio de Funcionamiento.. 59
Atributo de Varianza 59
Principio de Funcionamiento. 59
Atributo de Frecuencia 60
Principio de Funcionamiento.. 60
Atributos Sísmicos en los Volúmenes Sísmicos 61
Generación de Time Slices y Análisis Final 63
Integración de Resultados 64
Correlación Litológica vs Registro de Pozo 64
Caracterización Litológica 64
Determinación de A/S 69
Análisis por Pozo 69
Pozo 1A.. 69
Pozo 2A.. 71
Pozo 3A. 73
Correlación de Pozos 75
Resolución Sísmica de Pozo 77
Resolución Sísmica 77
Volumen Sísmico 1. 77
Cálculo de la Resolución Sísmica 80
Volumen Sísmico 2 82
Generación del Modelo 85
Horizontes Sísmicos y Superficies Geológicas 85
Análisis de Atributos Sísmicos 89
Volumen Sísmico 1 91
Volumen Sísmico 2 94
Volumen Sísmico 1 95
Volumen Sísmico 2 97
Volumen Sísmico 1 99
Volumen Sísmico 2 100
Volumen Sísmico 1 102
Volumen Sísmico 2 103
Caracterización Estratigráfica de la Formación Carbonera C5 106
Correlación Estratigráfica General 106
Caracterización de la Unidad C5.. 107
Integración de Atributos Sísmicos en la Caracterización Estratigráfica 107
RMS Amplitude. 107
Frecuencia Instantánea. 108
Sweetness. 108
108
Modelo Geológico Integrado.. 109
Aportes y Experiencias Obtenidas 109
Conclusiones 111
Conclusiones Especificas 111
Recomendaciones 113
Referencias Bibliográficas 114PregradoGeólogoUniversidad de Santande
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
Author Under Sail The Imagination of Jack London, 1893-1902
No full textIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Intro -- Title Page -- Copyright Page -- Dedication -- Contents -- Acknowledgments -- Introduction -- 1. Spirit Truth -- 2. From Absorption to Theatricality and Back Again -- 3. "I Will Build a New Present" -- 4. Sons as Authors -- 5. Fathers as Publishers -- 6. The Daughter as Author -- 7. Lovers as Authors -- 8. At Sea with the Family -- 9. Yellow News, Yellow Stories -- 10. The Return Home -- Notes -- Bibliography -- Index -- About Jay WilliamsIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Description based on publisher supplied metadata and other sources.Electronic reproduction. Ann Arbor, Michigan : ProQuest Ebook Central, YYYY. Available via World Wide Web. Access may be limited to ProQuest Ebook Central affiliated libraries
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