Download or read book Use of Volume based 3 D Seismic Attribute Analysis to Characterize Physical Property Distribution written by Juliana M. Tebo and published by . This book was released on 2003 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt: "We illustrate the techniques and advantages of the approach to predict 3-D distribution of porosity in stratigraphically complex carbonate buildups of the Upper Jurassic Smackover Formation at Appleton Field, southwest Alabama. We predict that porosity is thicker on the forereef flanks than on the crest of paleostructure." --

Download or read book Geological CO2 Storage Characterization written by Ronald C. Surdam and published by Springer Science & Business Media. This book was released on 2013-12-12 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book investigates geological CO2 storage and its role in greenhouse gas emissions reduction, enhanced oil recovery, and environmentally responsible use of fossil fuels. Written for energy/environmental regulators at every level of government (federal, state, etc.), scientists/academics, representatives from the power and fossil energy sectors, NGOs, and other interested parties, this book uses the characterization of the Rock Springs Uplift site in Wyoming as an integrated case study to illustrate the application of geological CO2 storage science, principles, and theory in a real-world scenario.

Download or read book Seismic Attributes for Prospect Identification and Reservoir Characterization written by Satinder Chopra and published by SEG Books. This book was released on 2007 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introducing the physical basis, mathematical implementation, and geologic expression of modern volumetric attributes including coherence, dip/azimuth, curvature, amplitude gradients, seismic textures, and spectral decomposition, the authors demonstrate the importance of effective colour display and sensitivity to seismic acquisition and processing.

Download or read book Incorporating Seismic Attribute Variation Into the Pre well Placement Workflow a Case Study from Ness County Kansas USA written by Mazin Y. Abbas and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: 3D seismic surveys have become the backbone of many exploration programs because of their high resolution and subsequent success for wildcat test wells. There are occasions when the predicted subsurface geology does not agree with the actual geology encountered in the drilled well. A case in point occurred during the drilling of several wells based upon a 3D seismic survey in Ness County, Kansas, where the predicted Cherokee Sand did not meet the expectations. By better understanding the subsurface geologic features in the subject area, this study will attempt to answer the question "what went wrong?" Seismic attribute analysis workflow was carried out and the results were correlated to the available geological and borehole data within the survey boundaries. The objective of running this workflow was to describe facies variations within the Cherokee Sandstone. Correlations between seismic attributes and physical properties from well data were used to define these variations. Finally, Distributions of the seismic facies were mapped to predict the distribution of potential reservoir rocks within the prospect area.

Download or read book Geophysical Exploration Technology written by Ming Li and published by Elsevier. This book was released on 2014-02-06 with total page 471 pages. Available in PDF, EPUB and Kindle. Book excerpt: Authored by one of the world’s hydrocarbon exploration experts, Geophysical Exploration Technology: Applications in Lithological and Stratigraphic Reservoirs presents the latest technological advancements and cutting edge techniques in reservoir theory, research and exploration. Stratigraphic and lithological reservoirs play a critical role in increasing the production from oil reserves and new hydrocarbon sources. Recent resource evaluations indicate that onshore stratigraphic and subtle reservoirs account for as much as 40% of the total remaining hydrocarbon sources globally. As a result, these reservoirs will be the most practical, potential and prevalent fields for long-lasting onshore exploration. Intended as an aid in developing an understanding of the techniques of reservoir exploration, this book presents the latest and most practical methods and technology in oil and gas exploration. It can be used as a training book for lithological stratigraphic exploration and a reference for scientific and technological personnel in the oil and gas industry. Authored by one of the world’s foremost experts in stratigraphic and lithological reservoir exploration who has more than 30 years of experience in research and instruction Features more than 200 figures, illustrations, and working examples to aid the reader in retaining key concepts Presents the latest technological developments in reservoir exploration techniques Integrates theory and application, arming readers with a rigorous yet practical approach to hydrocarbon exploration in stratigraphic and lithological reservoirs

Download or read book On the Determination and Use of Kinematic Wavefield Attributes for 3D Seismic Imaging written by Steffen Bergler and published by . This book was released on 2004 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the last two decades a lot of effort has been directed towards methods that have the potential to succeed in imaging complex 3D subsurface structures from multi-coverage seismic data. The necessity of an estimate for the wave propagation velocities, required for transforming the data from the time domain to the depth domain, poses one of the fundamental problems in seismic imaging. Inadequate velocity models distort the final depth image. So-called data-oriented approaches are a class of imaging methods that avoid the explicit parameterisation of a velocity model in the first imaging steps. Instead, the data-oriented approaches parameterise the reflection events in the time domain and try to obtain as much information as possible from the measured data. The extracted information is then used to transform the seismic data into depth. The common-reflection-surface (CRS) stack is one of the data-oriented imaging approaches. This method makes use of second-order traveltime approximations in order to describe seismic reflection events in the time domain. For the processing of data from a 3D acquisition, the traveltime equations can be used as stacking operators to simulate a zero-offset (ZO) volume of high accuracy and high signal-to-noise ratio from multi-coverage prestack data. During the stack, reflection energy from the entire five-dimensional data hyper-volume enters into the construction of one ZO sample. The eight parameters, which express the traveltime approximation for the ZO case, relate to kinematic wavefield attributes. These locally describe the propagation directions and curvatures of specific wavefronts at the Earth's surface which have travelled through the subsurface. Thus, the kinematic wavefield attributes constitute integral quantities of the medium's parameters and are suitable to estimate the properties of the Earth's interior. The accurate determination of the wavefield attributes is, therefore, a crucial step in the CRS processing. In this thesis the derivation of the traveltime approximations is presented. The kinematic wavefield attributes are introduced by means of concepts known from geometrical optics. The determination of the eight kinematic wavefield attributes for the ZO case from 3D multi-coverage seismic data is elaborated. The applications of the attributes to support and facilitate 3D seismic imaging are discussed. In this context emphasis is put on the utilisation of the kinematic wavefield attributes for the 3D CRS stack. The proposed search algorithms are validated on a synthetic data example and have shown to be successful. Finally, the 3D CRS stack is applied to a real marine dataset. In this way the functionality of the search algorithms on complex data is verified. Moreover, the imaging quality of the 3D CRS stack is checked by migrating the simulated ZO volume to depth and comparing the obtained result with the result from a prestack depth migration. The comparison shows that the CRS based result is competitive to the result of the prestack depth migration. Thus, CRS based imaging is an alternative to prestack depth migration due to the good imaging quality and also due to the provided information in form of the kinematic wavefield attributes.

Download or read book Applications of 3D Seismic Attribute Analysis Workflows written by Tyler N. Meek and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Due to their high resolution and established success rates, 3D seismic surveys have become one of the most important tools in many hydrocarbon exploration programs. Basic interpretation of seismic reflectors alone, however, may result in inaccurate predictions of subsurface geology. Historically, seismic attributes have played a particularly important role in the characterization of the lithological and petrophysical properties of hydrocarbon reservoirs in Kansas channel fill lithofacies. Integration of an analysis based on post-stack seismic attributes may drastically reduce the chances of drilling in unsuitable locations. Previous theses have focused on establishing a suitable 3D seismic attribute analysis workflow for use in the determination of hydrocarbon production potential in areas of Ness County, Kansas, USA (Abbas, 2009; Phillip, 2011). By applying a similar workflow in the analysis of additional 3D seismic and well log data obtained from a nearby area in Ness County, and comparing those results to existing borehole and production data, this study seeks to test the hypothesis that seismic attribute analysis is a crucial component in the delineation of heterogeneous reservoir stratigraphy in Kansas lithologies. Time-structure maps, in addition to time slices of several 3D seismic attributes including amplitude attenuation, acoustic impedance, and event continuity all seem to indicate that five previously drilled dry wells within the study area were outside the boundary of a meandering, Cherokee sandstone body of potential reservoir quality. Additionally, comparisons of the results of this research to previous studies conducted in Ness County have provided an opportunity to assess, and potentially contribute to, paleodepositional interpretations made through the utilization of a similar workflow (Raef et al., in press). The results of this study seem to support a broadly NE-SW trending meandering channel system, which is in agreement with the interpretations of Raef et al., and the findings of Ramaker (2009).

Download or read book 3 D Seismic Interpretation written by Bruce S. Hart and published by . This book was released on 2000 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: 3-D seismic technology is spreading out beyond the domain of the petroleum industry. The environmental and mining industries and academic groups are collecting and interpreting 3-D seismic data. Increasing numbers of geologists (often with little or no geophysical training) are being exposed to the technology, or results derived therefrom. Despite this interest, there are few opportunities for the practicing geologists (or engineer) to become acquainted with 3-D seismic technology at the appropriate level. This course is an attempt to fill that gap.

Download or read book Multicomponent 3D Seismic Interpretation of the Marcellus Shale Bradford County Pennsylvania written by Mouna Gargouri and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: High spatial variability of petrophysical and petrochemical properties of the Marcellus formation was reported by Hill et al. (2002). This creates a major challenge in reservoir characterization with conventional seismic data. An investigation into the potential of integrated compressional P-wave and converted-wave seismic interpretation, to help characterize geological properties of the Devonian Marcellus shale, has been conducted based on the 3C-3D data set acquired. Synthetic and real seismic data have been used to conduct this evaluation. Interval Vp/Vs analysis has been performed and the Poisson's ratio was generated to map lateral changes in lithology and rock properties. Sweet spots are interpreted to area with high quartz, an anomalous low Vp/Vs. The Vp/Vs Marcellus map shows the lateral lithological variability and therefore brittle areas. An inversion was run for the compressional P and the converted PS sections to examine the anomalies observed within the Vp/Vs map. The anomalies distinguished within the Vp/Vs map were noticeable in the inversion sections. The inversion was followed by a seismic attribute analysis to understand the distribution of fractures. The curvature and the coherency attributes delivered highly fractured area and major faults. This study documents the results of an integrated workflow of seismic interpretation, seismic inversion and seismic attribute analysis. It illustrates the potential of the Vp/Vs analysis to discriminate between shale-rich and sand-rich material and the ability of the curvature and coherency attribute to potentially highlight zones of intense fracturing.

Download or read book Physical Property Analysis Numerical and Scale Modeling for Planning of Surface Seismic Surveys written by Deanne Duff and published by . This book was released on 2007 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Stanford Rock Physics Borehole Geophysics Project written by and published by . This book was released on 2001 with total page 554 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Advances in Subsurface Data Analytics written by Shuvajit Bhattacharya and published by Elsevier. This book was released on 2022-05-18 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Subsurface Data Analytics: Traditional and Physics-Based Approaches brings together the fundamentals of popular and emerging machine learning (ML) algorithms with their applications in subsurface analysis, including geology, geophysics, petrophysics, and reservoir engineering. The book is divided into four parts: traditional ML, deep learning, physics-based ML, and new directions, with an increasing level of diversity and complexity of topics. Each chapter focuses on one ML algorithm with a detailed workflow for a specific application in geosciences. Some chapters also compare the results from an algorithm with others to better equip the readers with different strategies to implement automated workflows for subsurface analysis. Advances in Subsurface Data Analytics: Traditional and Physics-Based Approaches will help researchers in academia and professional geoscientists working on the subsurface-related problems (oil and gas, geothermal, carbon sequestration, and seismology) at different scales to understand and appreciate current trends in ML approaches, their applications, advances and limitations, and future potential in geosciences by bringing together several contributions in a single volume. Covers fundamentals of simple machine learning and deep learning algorithms, and physics-based approaches written by practitioners in academia and industry Presents detailed case studies of individual machine learning algorithms and optimal strategies in subsurface characterization around the world Offers an analysis of future trends in machine learning in geosciences

Download or read book Meta attributes and Artificial Networking written by Kalachand Sain and published by John Wiley & Sons. This book was released on 2022-08-16 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: Applying machine learning to the interpretation of seismic data Seismic data gathered on the surface can be used to generate numerous seismic attributes that enable better understanding of subsurface geological structures and stratigraphic features. With an ever-increasing volume of seismic data available, machine learning augments faster data processing and interpretation of complex subsurface geology. Meta-Attributes and Artificial Networking: A New Tool for Seismic Interpretation explores how artificial neural networks can be used for the automatic interpretation of 2D and 3D seismic data. Volume highlights include: Historic evolution of seismic attributes Overview of meta-attributes and how to design them Workflows for the computation of meta-attributes from seismic data Case studies demonstrating the application of meta-attributes Sets of exercises with solutions provided Sample data sets available for hands-on exercises The American Geophysical Union promotes discovery in Earth and space science for the benefit of humanity. Its publications disseminate scientific knowledge and provide resources for researchers, students, and professionals.

Download or read book Quantitative Characterization and Engineering Application of Pores and Fractures of Different Scales in Unconventional Reservoirs Volume III written by Hu Li and published by Frontiers Media SA. This book was released on 2023-10-26 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Seismic Attributes for Prospect Identification and Reservoir Characterization written by Satinder Chopra and published by SEG Books. This book was released on 2007 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introducing the physical basis, mathematical implementation, and geologic expression of modern volumetric attributes including coherence, dip/azimuth, curvature, amplitude gradients, seismic textures, and spectral decomposition, the authors demonstrate the importance of effective colour display and sensitivity to seismic acquisition and processing.

Download or read book 3D Seismic Attribute Analysis and Machine Learning for Reservoir Characterization in Taranaki Basin New Zealand written by Aamer Ali AlHakeem and published by . This book was released on 2018 with total page 103 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The Kapuni group within the Taranaki Basin in New Zealand is a potential petroleum reservoir. The objective of the study includes building a sequential approach to identify different geological features and facies sequences within the strata, through visualizing the targeted formations by interpreting and correlating the regional geological data, 3D seismic, and well data by following a sequential workflow. First, seismic interpretation is performed targeting the Kapuni group formations, mainly, the Mangahewa C-sand and Kaimiro D-sand. Synthetic seismograms and well ties are conducted for structural maps, horizon slices, isopach, and velocity maps. Well log and morphological analyses are performed for formation sequence and petrophysics identification. Attribute analyses including RMS, dip, azimuth, and eigenstructure coherence are implemented to identify discontinuities, unconformities, lithology, and bright spots. Algorithmic analyses are conducted using Python programming to generate and overlay the attributes which are displayed in 3D view. Integrating all of the attributes in a single 3D view significantly strengthens the summation of the outputs and enhances seismic interpretation. The attribute measurements are utilized to characterize the subsurface structure and depositional system such as fluvial dominated channels, point bars, and nearshore sandstone. The study follows a consecutive workflow that leads to several attribute maps for identifying potential prospects"--Abstract, page iv.

Download or read book Rock physics and 3C 3D Seismic Analysis for Reservoir Characterization written by Fabiola Del Valle Ruiz Pelayo and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The elastic properties (density and velocity) of organic shales are largely controlled by kerogen content, porosity, clay content, and e ective pressure. Since surface-seismic measurements can have a complicated dependence on rock properties, it is essential to understand the relationship between the elastic response and variations in rock properties to correctly assess the target reservoir. In this sense, a combination of rock-physics and seismic modeling is applied to relate variations in key properties, such as kerogen content and porosity, to di erences in the elastic response of a 3C-3D seismic volume in the Marcellus Shale (Bradford County, Pennsylvania). Well log analysis and rock physics modeling indicate that density is more sensitive to kerogen content than Vp/Vs or P impedance. Organic-rich intervals (kerogen content > 6 wt. %) are characterized by densities lower than 2.5 g/cc. Vp/Vs and P-impedance are more sensitive to variations in clay content than density; Vp/Vs values lower than 1.6 are attached to clay content lower than 25 %. The interplay between mineralogy and kerogen content causes an increase in velocity in the organic-rich interval, where the e ect of kerogen on the elastic moduli seems to be masked by a decrease in clay content and increase in quartz and calcite. Elastic AVA modeling shows that the sensitivity to the presence of the organic-rich facies increases with angle for both PP and PS (converted-wave) reflections. Additionally, the compressibility seems to be more sensitive to the organic-rich facies than the rigidity. A comparison between PP and PP-PS inversions show that the addition of PS data decreases the P-impedance, S-impedance and density estimation errors by 58, 80, and 17 %, respectively. We used this procedure to create 3D-density maps to indicate promising reservoir quality. These predictions suggest good reservoirs where two gas wells (not used in the analysis) are producing.