Characterization Of Wetting Front Geometry And Fluid Migration In The Vadose Zone Using Surface Time Lapse Seismic First Arrival Tomography

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Characterization of Wetting Front Geometry and Fluid Migration in the Vadose Zone Using Surface Time-lapse Seismic First-arrival Tomography

Author : Rachel Elizabeth Storniolo
Publisher :
ISBN 13 :
Total Pages : 158 pages
Book Rating : 4.:/5 (827 download)

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Book Synopsis Characterization of Wetting Front Geometry and Fluid Migration in the Vadose Zone Using Surface Time-lapse Seismic First-arrival Tomography by : Rachel Elizabeth Storniolo

Download or read book Characterization of Wetting Front Geometry and Fluid Migration in the Vadose Zone Using Surface Time-lapse Seismic First-arrival Tomography written by Rachel Elizabeth Storniolo and published by . This book was released on 2012 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt: Characterizing and quantifying vadose zone parameters and processes are critical for assessing environmental, agricultural, and engineering problems. The shallow subsurface is essential to the geologic and hydrologic cycles because it supports agriculture and ecosystems, influences water resources, and acts as a repository for contaminants. Fluid migration in the vadose zone is dependent on a number of soil characteristics (e.g. soil type and saturation). Quantifying parameters is often the primary goal of hydrological fluid-flow investigations; however, the values calculated can be misrepresentative of the subsurface due to anisotropic features. Hydraulic conductivity (K), the most common quantitative parameter used to describe fluid flow through a porous medium, is complicated in the vadose zone due to spatial and temporal variations at many scales. Many in-situ methods for calculating K (i.e. constant head permeameter method) use surface measurements to quantify subsurface fluid flow. However, the geometry and distribution of the fluid migrating through the subsurface is not determinable from surface measurements, and therefore these techniques may not provide a comprehensive understanding of field-scale fluid flow. In this study, a more robust non-invasive method to image a migrating wetting front in the vadose zone is developed using time-lapse seismic first-arrival tomography (TLSFT). The TLSFT method is based on the concept that variations in seismic compressional wave (P-wave) arrival times are used as a proxy for the relative saturation changes due to an advancing wetting front generated from surface infiltration. Two constant flux applicator infiltration experiments were conducted at the East Tennessee Research and Education Center B-4 plot, while simultaneously collecting TLSFT data to image a migrating wetting front. The TLSFT infiltration method successfully images a migrating wetting front through the vadose zone at different time steps to visually characterize the geometry and distribution of water. Calculated K values using TLSFT infiltration data with an empirical formula are within one to two orders of magnitude of calculated K from an Amoozemeter experiment and known K of the Sequatchie soil series at the B-4 plot. TLSFT calculated ranges of K values are reasonable when considering the spatial and temporal extent of K at a single site.

Directory of Geoscience Departments 2015

Author : Carolyn Wilson
Publisher : American Geosciences Inst
ISBN 13 :
Total Pages : 2140 pages
Book Rating : 4./5 ( download)

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Book Synopsis Directory of Geoscience Departments 2015 by : Carolyn Wilson

Download or read book Directory of Geoscience Departments 2015 written by Carolyn Wilson and published by American Geosciences Inst. This book was released on 2015-02-27 with total page 2140 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Directory of Geoscience Departments 50th Edition is the most comprehensive directory and source of information about geosciences departments and researchers available. It is an invaluable resource for individuals working in the geosciences or must identify or work with specialists on the issues of Earth, Environmental, and related sciences and engineering fields. The Directory of Geoscience Departments 50th Edition provides a state/country-sorted listing of nearly 2300 geoscience departments, research departments, institutes, and their faculty and staff. Information on contact information for departments and individuals is provided, as well as details on department enrollments, faculty specialties, and the date and source of faculty and staff's highest degree. New in the 50th edition: Listing of all US and Canadian geoscience theses and dissertations accepted in 2012 that have been reported to GeoRef Information Services, as well as a listing of faculty by their research specialty.

Practical Applications of Time-lapse Seismic Data

Author : David H. Johnston
Publisher : SEG Books
ISBN 13 : 156080307X
Total Pages : 288 pages
Book Rating : 4.5/5 (68 download)

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Book Synopsis Practical Applications of Time-lapse Seismic Data by : David H. Johnston

Download or read book Practical Applications of Time-lapse Seismic Data written by David H. Johnston and published by SEG Books. This book was released on 2013 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: Time-lapse (4D) seismic technology is a key enabler for improved hydrocarbon recovery and more cost-effective field operations. This book shows how 4D data are used for reservoir surveillance, add value to reservoir management, and provide valuable insight on dynamic reservoir properties such as fluid saturation, pressure, and temperature.

Advances in Seismic First-arrival Tomography

Author : David Paul Gaines
Publisher :
ISBN 13 :
Total Pages : 197 pages
Book Rating : 4.:/5 (742 download)

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Book Synopsis Advances in Seismic First-arrival Tomography by : David Paul Gaines

Download or read book Advances in Seismic First-arrival Tomography written by David Paul Gaines and published by . This book was released on 2011 with total page 197 pages. Available in PDF, EPUB and Kindle. Book excerpt: Seismic first-arrival tomography is a technique currently experiencing a renaissance in popularity due to the simplicity of implementation and promising results for delineating a variety of subsurface targets. The purpose of this study is to investigate seismic first-arrival tomography in a variety of settings and applications, and thus to provide a solid framework for future work. The study largely consists of two separate themes, hydrogeophysics and low-velocity anomaly detection. Hydrogeophysics is an emerging field whereby measured geophysical properties are used as proxies for physical properties of the subsurface. This study represents one of the first high-resolution hydrogeophysical investigations in the upper three meters of the subsurface using seismic first-arrival tomography, and consists of detecting shallow high-velocity zones that are interpreted to be perched water bodies on the basis of geophysical and hydrologic evidence. The delineation and imaging of the perched water bodies is further advanced using trend-analysis techniques. A second theme of this dissertation is the optimization of methods for delineating low-velocity anomalies at depth using seismic first-arrival tomography. In order to locate a low-velocity zone at Oak Ridge, Tennessee, multiple seismic lines were collected and correlated with site-wide geology. The integration of geologic and geophysical data-sets assisted in developing a comprehensive transport conceptual model, and provided a predictive framework for future geophysical investigations at Oak Ridge. As a second component of this theme, a systematic methodology for detecting and delineating shallow low-velocity zones is developed.

Time-lapse Seismic in Reservoir Management

Author : Ian Jack
Publisher :
ISBN 13 :
Total Pages : 296 pages
Book Rating : 4.0/5 ( download)

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Book Synopsis Time-lapse Seismic in Reservoir Management by : Ian Jack

Download or read book Time-lapse Seismic in Reservoir Management written by Ian Jack and published by . This book was released on 1997 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Seismic Time-lapse Monitoring of Subsurface Fluid Flow

Author : David E. Lumley
Publisher :
ISBN 13 :
Total Pages : 202 pages
Book Rating : 4.F/5 ( download)

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Book Synopsis Seismic Time-lapse Monitoring of Subsurface Fluid Flow by : David E. Lumley

Download or read book Seismic Time-lapse Monitoring of Subsurface Fluid Flow written by David E. Lumley and published by . This book was released on 1995 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Investigation of the Near-surface Seismic Structure of the Thuringian Basin Using 3D Traveltime Tomography

Author : Martin Krause
Publisher :
ISBN 13 :
Total Pages : 173 pages
Book Rating : 4.:/5 (899 download)

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Book Synopsis Investigation of the Near-surface Seismic Structure of the Thuringian Basin Using 3D Traveltime Tomography by : Martin Krause

Download or read book Investigation of the Near-surface Seismic Structure of the Thuringian Basin Using 3D Traveltime Tomography written by Martin Krause and published by . This book was released on 2014 with total page 173 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Hydrogeophysics

Author : Yorum Rubin
Publisher : Springer Science & Business Media
ISBN 13 : 1402031025
Total Pages : 518 pages
Book Rating : 4.4/5 (2 download)

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Book Synopsis Hydrogeophysics by : Yorum Rubin

Download or read book Hydrogeophysics written by Yorum Rubin and published by Springer Science & Business Media. This book was released on 2006-05-06 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt: This ground-breaking work is the first to cover the fundamentals of hydrogeophysics from both the hydrogeological and geophysical perspectives. Authored by leading experts and expert groups, the book starts out by explaining the fundamentals of hydrological characterization, with focus on hydrological data acquisition and measurement analysis as well as geostatistical approaches. The fundamentals of geophysical characterization are then at length, including the geophysical techniques that are often used for hydrogeological characterization. Unlike other books, the geophysical methods and petrophysical discussions presented here emphasize the theory, assumptions, approaches, and interpretations that are particularly important for hydrogeological applications. A series of hydrogeophysical case studies illustrate hydrogeophysical approaches for mapping hydrological units, estimation of hydrogeological parameters, and monitoring of hydrogeological processes. Finally, the book concludes with hydrogeophysical frontiers, i.e. on emerging technologies and stochastic hydrogeophysical inversion approaches.

Full Wavefield Inversion Methods for Monitoring Time-lapse Subsurface Velocity Changes

Author : Di Yang (Ph. D)
Publisher :
ISBN 13 :
Total Pages : 252 pages
Book Rating : 4.:/5 (93 download)

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Book Synopsis Full Wavefield Inversion Methods for Monitoring Time-lapse Subsurface Velocity Changes by : Di Yang (Ph. D)

Download or read book Full Wavefield Inversion Methods for Monitoring Time-lapse Subsurface Velocity Changes written by Di Yang (Ph. D) and published by . This book was released on 2014 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: Quantitative measurements of seismic velocity changes from time-lapse seismic experiments provide dynamic information about the subsurface that improves the understanding of the geology and reservoir properties. In this thesis, we propose to achieve the quantitative analysis using full wavefield inversion methods which are robust in complex geology. We developed several methodologies in both the data domain and image domain to handle different time-lapse seismic acquisitions. In the data domain, we implemented double-difference waveform inversion (DDWI), and investigated its robustness and feasibility with realistic acquisition non-repeatabilities. Well-repeated time-lapse surveys from Valhall in the North Sea are used to compare DDWI and conventional time-lapse full waveform inversion (FWI) schemes. An FWI approach that uses the baseline and monitor datasets in an alternating manner is proposed to handle time-lapse surveys without restrictions on geometry repeatability, and to provide an uncertainty analysis on the time-lapse changes. In the image domain, we propose time-lapse image domain wavefield tomography (IDWT) that inverts for P- and S-wave velocity changes by matching baseline and monitor images produced with small offset reflection surveys. This method is robust to survey geometry non-repeatabilities and baseline velocity errors. A low velocity zone caused by local CO2 injections in SACROC, West Texas is found by IDWT with time-lapse walkaway vertical seismic profile surveys. The methods in this thesis combined, allow for an integrated velocity inversion to achieve high-resolution subsurface monitoring with various types of acquisitions in complex geology.

Time-lapse Seismic in Reservoir Management

Author :
Publisher :
ISBN 13 : 9781560801887
Total Pages : pages
Book Rating : 4.8/5 (18 download)

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Book Synopsis Time-lapse Seismic in Reservoir Management by :

Download or read book Time-lapse Seismic in Reservoir Management written by and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This course, intended to appeal to a wide audience, will provide an overview of the current state-of-the-art in "time-lapse seismic" and enable participants to make decisions involving the use of this method.

Joint Inversion of Production and Time-lapse Seismic Data

Author : Amit Suman
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (83 download)

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Book Synopsis Joint Inversion of Production and Time-lapse Seismic Data by : Amit Suman

Download or read book Joint Inversion of Production and Time-lapse Seismic Data written by Amit Suman and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Time-lapse seismic has evolved as an important diagnostic tool in efficient reservoir characterization and monitoring. Reservoir models, optimally constrained to seismic response, as well as flow response, can provide a better description of the reservoir and thus more reliable forecast. This dissertation focuses on different aspects of joint inversion of time-lapse seismic and production data for reservoir model updating, with application to the Norne field in the Norwegian Sea. This work describes a methodology for joint inversion of production and time-lapse seismic data, analyzes sensitive parameters in the joint inversion, identifies sensitive rock physics parameters for modeling time-lapse seismic response of a field and successfully applies and compares the family of particle swarm optimizers for joint inversion of production and time-lapse seismic data of the Norne field. The contributions from this research include a systematic workflow for joint inversion of time-lapse seismic and production data that can be and has been practically applied to a real field. Better reservoir models, constrained to both data will in turn lead to better reservoir forecasts and better field management. The first part of this thesis uses Norne field data to analyze sensitive parameters in joint inversion of production and time-lapse seismic data. An experimental design is performed on the parameters of the reservoir and seismic simulator. The results are used to rank the parameters in terms of sensitivity to production and time-lapse seismic data. At the same time it is shown that porosity/permeability models is not the most sensitive parameter for joint inversion of production and time-lapse seismic data of the Norne field. The parameters selected for study are porosity and permeability model, relative permeability, rock physics models, pore compressibility and fluid mixing. Results show that rock physics model has the most impact on time-lapse seismic whereas relative permeability is the most important parameter for production response. The results of this study are used in selecting the most important reservoir parameters for joint inversion of time-lapse seismic and production data of the Norne field. It is established that rock physics model is the most sensitive parameter for modeling time-lapse seismic of the Norne field, but there are rock physics parameters associated with rock physics model that impact time-lapse seismic modeling. So it is necessary to identify sensitive rock physics parameters for modeling time-lapse seismic response. Thus, the second part of this thesis identifies sensitive rock physics parameters in modeling time-lapse seismic response of Norne field. At first facies are classified based on well log data. Then sensitive parameters are investigated in the Gassmann's equation to generate the initial seismic velocities. The investigated parameters include mineral properties, water salinity, pore-pressure and gas-oil ratio (GOR). Next, parameter sensitivity for time-lapse seismic modeling of the Norne field is investigated. The investigated rock physics parameters are clay content, cement, pore-pressure and mixing. This sensitivity analysis helps to select important parameters for time-lapse (4D) seismic history matching which is an important aspect of joint inversion of production and time-lapse seismic of a field. Joint inversion of seismic and flow data for reservoir parameter is highly non-linear and complex. Local optimization methods may fail to obtain multiple history matched models. Recently stochastic optimization based inversion has shown very good results in the integration of time-lapse seismic and production data in reservoir history matching. Also, high dimensionality of the inverse problem makes the joint inversion of both data sets computationally expensive. High dimensionality of the inverse problem can be solved by using reduced order models. In this study, principal component bases derived from the prior is used to accomplish this. In the third part of the dissertation a family of particle swarm optimizers is used in combination with principal component bases for inversion of a synthetic data set. The performance of the different particle swarm optimizers is analyzed, both in terms of the quality of history match and convergence rate. Results show that particle swarm optimizers have very good convergence rate for a synthetic case. Also, these optimizers are used in combination with multi-dimensional scaling (MDS) to provide a set of porosity models whose simulated production and time-lapse seismic responses provide satisfactory match with the observed production and time-lapse seismic data. The goal of the last part is to apply the results of previous parts in joint inversion of production and time-lapse seismic data of the Norne field. Time-lapse seismic and production data of the Norne field is jointly inverted by varying the sensitive parameters identified in previous chapters and using different particle swarm optimizers. At first the time-lapse seismic surveys of the Norne field acquired in 2001 and 2004 is quantitatively interpreted and analyzed. Water was injected in the oil and gas producing Norne reservoir and repeat seismic surveys were conducted to monitor the subsurface fluids. The interpreted P-wave impedance change between 2001 and 2004 is used in the joint inversion loop as time-lapse seismic data. The application of different particle swarm optimizers provides a set of parameters whose simulated responses provide a satisfactory history match with the production and time-lapse seismic data of Norne field. It is shown that particle swarm optimizers have potential to be applied for joint inversion of the production and time-lapse seismic data of a real field data set.

Contaminants in the Subsurface

Author : National Research Council
Publisher : National Academies Press
ISBN 13 : 030909447X
Total Pages : 371 pages
Book Rating : 4.3/5 (9 download)

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Book Synopsis Contaminants in the Subsurface by : National Research Council

Download or read book Contaminants in the Subsurface written by National Research Council and published by National Academies Press. This book was released on 2005-04-23 with total page 371 pages. Available in PDF, EPUB and Kindle. Book excerpt: At hundreds of thousands of commercial, industrial, and military sites across the country, subsurface materials including groundwater are contaminated with chemical waste. The last decade has seen growing interest in using aggressive source remediation technologies to remove contaminants from the subsurface, but there is limited understanding of (1) the effectiveness of these technologies and (2) the overall effect of mass removal on groundwater quality. This report reviews the suite of technologies available for source remediation and their ability to reach a variety of cleanup goals, from meeting regulatory standards for groundwater to reducing costs. The report proposes elements of a protocol for accomplishing source remediation that should enable project managers to decide whether and how to pursue source remediation at their sites.

DNAPL Site Evaluation

Author : James W. Mercer
Publisher : CRC-Press
ISBN 13 : 9780873719773
Total Pages : 384 pages
Book Rating : 4.7/5 (197 download)

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Book Synopsis DNAPL Site Evaluation by : James W. Mercer

Download or read book DNAPL Site Evaluation written by James W. Mercer and published by CRC-Press. This book was released on 1993-04-29 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: DNAPL Site Evaluation covers long-term contamination of ground water by DNAPL (dense non-aqueous phase liquids) chemicals. The book develops a framework for planning and implementing DNAPL site characterization activities. It provides detailed methods to identify, characterize, and monitor sites and analyzes their utility, limitations, risks, availability, and cost. Methods to interpret contaminant fate and transport are identified, and new site characterization methods are assessed. DNAPL Site Evaluation will maximize the cost-effectiveness of site investigation/remediation by providing the best information available to describe and evaluate methods to be used for determining the presence, fate, and transport of subsurface DNAPL contamination. The book will be a useful reference for groundwater professionals and environmental regulatory personnel.

Characterization, Modeling, Monitoring, and Remediation of Fractured Rock

Author : National Academies of Sciences, Engineering, and Medicine
Publisher : National Academies Press
ISBN 13 : 0309373727
Total Pages : 177 pages
Book Rating : 4.3/5 (93 download)

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Book Synopsis Characterization, Modeling, Monitoring, and Remediation of Fractured Rock by : National Academies of Sciences, Engineering, and Medicine

Download or read book Characterization, Modeling, Monitoring, and Remediation of Fractured Rock written by National Academies of Sciences, Engineering, and Medicine and published by National Academies Press. This book was released on 2021-01-29 with total page 177 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fractured rock is the host or foundation for innumerable engineered structures related to energy, water, waste, and transportation. Characterizing, modeling, and monitoring fractured rock sites is critical to the functioning of those infrastructure, as well as to optimizing resource recovery and contaminant management. Characterization, Modeling, Monitoring, and Remediation of Fractured Rock examines the state of practice and state of art in the characterization of fractured rock and the chemical and biological processes related to subsurface contaminant fate and transport. This report examines new developments, knowledge, and approaches to engineering at fractured rock sites since the publication of the 1996 National Research Council report Rock Fractures and Fluid Flow: Contemporary Understanding and Fluid Flow. Fundamental understanding of the physical nature of fractured rock has changed little since 1996, but many new characterization tools have been developed, and there is now greater appreciation for the importance of chemical and biological processes that can occur in the fractured rock environment. The findings of Characterization, Modeling, Monitoring, and Remediation of Fractured Rock can be applied to all types of engineered infrastructure, but especially to engineered repositories for buried or stored waste and to fractured rock sites that have been contaminated as a result of past disposal or other practices. The recommendations of this report are intended to help the practitioner, researcher, and decision maker take a more interdisciplinary approach to engineering in the fractured rock environment. This report describes how existing tools-some only recently developed-can be used to increase the accuracy and reliability of engineering design and management given the interacting forces of nature. With an interdisciplinary approach, it is possible to conceptualize and model the fractured rock environment with acceptable levels of uncertainty and reliability, and to design systems that maximize remediation and long-term performance. Better scientific understanding could inform regulations, policies, and implementation guidelines related to infrastructure development and operations. The recommendations for research and applications to enhance practice of this book make it a valuable resource for students and practitioners in this field.

An Introduction to Reservoir Simulation Using MATLAB/GNU Octave

Author : Knut-Andreas Lie
Publisher : Cambridge University Press
ISBN 13 : 1108492436
Total Pages : 677 pages
Book Rating : 4.1/5 (84 download)

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Book Synopsis An Introduction to Reservoir Simulation Using MATLAB/GNU Octave by : Knut-Andreas Lie

Download or read book An Introduction to Reservoir Simulation Using MATLAB/GNU Octave written by Knut-Andreas Lie and published by Cambridge University Press. This book was released on 2019-08-08 with total page 677 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents numerical methods for reservoir simulation, with efficient implementation and examples using widely-used online open-source code, for researchers, professionals and advanced students. This title is also available as Open Access on Cambridge Core.

Digital Geoarchaeology

Author : Christoph Siart
Publisher : Springer
ISBN 13 : 3319253166
Total Pages : 272 pages
Book Rating : 4.3/5 (192 download)

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Book Synopsis Digital Geoarchaeology by : Christoph Siart

Download or read book Digital Geoarchaeology written by Christoph Siart and published by Springer. This book was released on 2017-12-03 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focusses on new technologies and multi-method research designs in the field of modern archaeology, which increasingly crosses academic boundaries to investigate past human-environmental relationships and to reconstruct palaeolandscapes. It aims at establishing the concept of Digital Geoarcheology as a novel approach of interdisciplinary collaboration situated at the scientific interface between classical studies, geosciences and computer sciences. Among others, the book includes topics such as geographic information systems, spatiotemporal analysis, remote sensing applications, laser scanning, digital elevation models, geophysical prospecting, data fusion and 3D visualisation, categorized in four major sections. Each section is introduced by a general thematic overview and followed by case studies, which vividly illustrate the broad spectrum of potential applications and new research designs. Mutual fields of work and common technologies are identified and discussed from different scholarly perspectives. By stimulating knowledge transfer and fostering interdisciplinary collaboration, Digital Geoarchaeology helps generate valuable synergies and contributes to a better understanding of ancient landscapes along with their forming processes. Chapters 1, 2, 6, 8 and 14 are published open access under a CC BY 4.0 license at link.springer.com.

Reservoir Compartmentalization

Author : S. J. Jolley
Publisher : Geological Society of London
ISBN 13 : 9781862393165
Total Pages : 376 pages
Book Rating : 4.3/5 (931 download)

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Book Synopsis Reservoir Compartmentalization by : S. J. Jolley

Download or read book Reservoir Compartmentalization written by S. J. Jolley and published by Geological Society of London. This book was released on 2010 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Reservoir compartmentalization - the segregation of a petroleum accumulation into a number of individual fluid/pressure compartments - controls the volume of moveable oil or gas that might be connected to any given well drilled in a field, and consequently impacts 'booking' of reserves and operational profitability. This is a general feature of modern exploration and production portfolios, and has driven major developments in geoscience, engineering and related technology. Given that compartmentalization is a consequence of many factors, an integrated subsurface approach is required to better understand and predict compartmentalization behaviour, and to minimize the risk of it occurring unexpectedly. This volume reviews our current understanding and ability to model compartmentalization. It highlights the necessity for effective specialist discipline integration, and the value of learning from operational experience in: detection and monitoring of compartmentalization; stratigraphic and mixed-mode compartmentalization; and fault-dominated compartmentalization"--Page 4 of cover.