Download or read book The Uses of Distributed Temperature Survey DTS Data written by Zhe Wang and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Temperature change plays an important role in many downhole processes, and temperature measurements have long been used to monitor the performance of producing wells, evaluate water-injection profiles and diagnose the effectiveness of fracture jobs, etc. However, for many years, the utilization of downhole temperature measurement was largely over-shadowed by other measurements obtained through sophisticated suites of logging tools. However, the development of fiber-optic technology has helped a resurgence of interest in temperature measurement. One characteristic of fiber-optic temperature measurement is that it is capable of measuring multiple points simultaneously. The fiber-optic tool used to measure temperature is called a Distributed Temperate Survey (DTS), which measures temperature along the whole interval covered by the fiber. In our study, we explored approaches of how to interpret DTS data. The significant contributions of this work include: 1. Building a wellbore/reservoir coupled thermal model The need to interpret wellbore temperature profiles measured by Distributed Temperature Sensors (DTS) requires a correspondingly sophisticated type of well model. To be specific, this model should be capable of predicting pressure and temperature distributions under a nonisothermal, multicomponent and multiphase production scenario. In our model, wellbore pressure and temperature were solved separately and then coupled by iteration. Accuracy was assured by the following three ways: a. Using the drift flux model to predict multiphase flow pressure; b. Fluid PVT properties were obtained by solving Equations of State, which is more accurate than the values obtained by averaging or mixing rules; c. Using numerical methods to solve the heat transfer between wellbore and formation, avoiding the assumption of an invariant relaxation length. This model was verified by comparing with several previously published models. 2. Estimating flowrate profile from temperature profile measurement Measuring flowrate profile can be a challenging job for traditional single-point flowrate measurement tools, and it becomes very unreliable especially for multi- phase flow and complex well geometries. However, temperature profile provides an alternative approach for measuring flowrate profiles. As the temperature in the wellbore is influenced by the properties and flowrate of the inflows from different entry points, measured temperature can be used to estimate flowrate. Therefore, the DTS data are very valuable for estimating flowrate profiles. In our study, we used two different inverse methods separately. Although the philosophy and performance of these two methods are different, both succeed in estimating flowrate profile from the temperature profile. The multiphase case was also considered, in which we found that it requires more input information than just temperature data to achieve a good estimate of flowrate profile. 3. Evaluating formation properties Temperature is also a function of formation properties, and thus it can be used to evaluate the formation. We found that temperature data are more sensitive to the properties in the near-well formation than pressure data. This finding is confirmed by our study on several different cases of single-layer reservoirs. Furthermore, multilayer and horizontal wells, both of which have multiple entry points in the well, were also studied. Finally, a successful analysis of a real case was helpful to verify our findings.

Download or read book Distributed Temperature Sensing DTS as a Hydrostratigraphic Characterization Tool written by J.M. Bahr and published by . This book was released on 2011 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book SPE Production Operations written by and published by . This book was released on 2009 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Water Studies written by C. A. Brebbia and published by WIT Press. This book was released on 2018-03-27 with total page 327 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprising specially selected papers this book presents trans-disciplinary research on issues related to the nature of water, and its use and exploitation by society. The valuable research contained in this book demonstrates the need to bridge the gap between physical, biological, environmental and health sciences. Water is essential for sustaining life on our planet, nevertheless its unequal distribution is a source of permanent conflict. It is predicted that population growth and irregular rainfall, due to climate change, may lead to more restricted access to water in certain regions of the world. This problem is made even more severe by human actions that can cause degradation to nature and the environment. The availability of clean and inexpensive water can no longer be taken for granted as the need for water continues to increase due a growing global population. Heavy water consumers such as agriculture and industry often contribute to its contamination. Water distribution networks in urban areas and soiled water collection systems, present serious problems as well as the need to maintain ageing infrastructures. Possible technologically solutions, such as desalination or pumping systems are energy demanding but, as costs rise, the techniques currently developed may need to be re-assessed.

Download or read book Demonstration of Fiber Optic Distributed Temperature Sensing to Differentiate Cold Water Refuge Between Ground Water Inflows and Hyporheic Exchange written by Michael W. Collier and published by . This book was released on 2009 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent developments in Distributed Temperature Sensing (DTS) have allowed new insight into the surface-to-ground water interaction. The continuous temperature measurement by the DTS allows for cool water inflows to be located during warm summer months. These cool water inflows can then be differentiated between ground water and hyporheic exchange. The cool water inflows are important to many species that inhabit the rivers of the Western United States. As temperatures increase due to climate change the importance of cool water inflows will grow. This study used fiber optic cable and the DTS system to measure the temperature in 2km of the Walla Walla River, near Milton-Freewater, Oregon. The temperature data was split into nighttime and daytime averages. The correlation between these two data sets was calculated to reveal when the daytime and nighttime data followed the same cooling pattern (evidence of ground water inflow) or when the nighttime temperature increased, but the daytime temperature decreased (evidence of hyporheic exchange). Nine areas of apparent ground water inflow and nine areas of expected hyporheic exchange were identified. The average quantity of inflow at each ground water site was calculated as 0.04 m3/s. The computed average hyporheic exchange depth along the 2000 m channel was 0.32 m. The located cold water inflows were compared to salmon and trout location from a US Fish and Wildlife Survey. This comparison showed that the cool mid-day inflows (either ground water or hyporheic exchange locations) made up 1/3 of the study reach length and had approximately 60% of the cold water fish. Half of the cool water inflow sites did not have fish present during the survey which suggests that while influent cool water is a major factor for fish congregation, it is not the sole factor.

Download or read book SPE Drilling Completion written by and published by . This book was released on 2007 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Sedimentology of Paralic Reservoirs written by G.J. Hampson and published by Geological Society of London. This book was released on 2017-07-20 with total page 431 pages. Available in PDF, EPUB and Kindle. Book excerpt: Paralic reservoirs reflect a range of depositional environments including deltas, shoreline–shelf systems and estuaries. They provide the backbone of production in many mature basins, and contribute significantly to global conventional hydrocarbon production. However, the range of environments, together with relative sea-level and sediment supply changes, result in significant variability in their stratigraphic architecture and sedimentological heterogeneity, which translates into complex patterns of reservoir distribution and production that are challenging to predict, optimize and manage. This volume presents new research and developments in established approaches to the exploration and production of paralic reservoirs. The 13 papers in the volume are grouped into three thematic sections, which address: the sedimentological characterization of paralic reservoirs using subsurface data; lithological heterogeneity in paralic depositional systems arising from the influence of tidal currents; and paralic reservoir analogue studies of modern sediments and ancient outcrops. The volume demonstrates that heterogeneity in paralic reservoirs is increasingly well understood at all scales, but highlights gaps in our knowledge and areas of current research.

Download or read book Baseline hydrologic studies in the lower Elwha River prior to dam removal written by Christopher S. Magirl and published by U.S. Department of the Interior, U.S. Geological Survey. This book was released on 2011-09-07 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chapter 4 of Duda, J.J., J.A. Warrick, and C.S. Magirl, eds., Coastal habitats of the Elwha River, Washington – Biological and physical patterns and processes prior to dam removal This report includes chapters that summarize the results of multidisciplinary studies to quantify and characterize the current (2011) status and baseline conditions of the lower Elwha River, its estuary, and the adjacent nearshore ecosystems prior to the historic removal of two long-standing dams that have strongly influenced river, estuary, and nearshore conditions. The studies were conducted as part of the U.S. Geological Survey Multi-disciplinary Coastal Habitats in Puget Sound (MD-CHIPS) project. Chapter 4 details a series of hydrological data collected by the MD-CHIPS Elwha project. These include groundwater monitoring, surface water-groundwater interactions in the estuary, an estimated surface-water budget to the estuary, and a series of temperature and salinity measurements.

Download or read book JPT Journal of Petroleum Technology written by and published by . This book was released on 2008-07 with total page 724 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Coastal Habitats of the Elwha River Washington written by Jeffrey J. Duda and published by . This book was released on 2011 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Data Analysis Methods in Physical Oceanography written by Richard E. Thomson and published by Elsevier. This book was released on 2001-04-03 with total page 654 pages. Available in PDF, EPUB and Kindle. Book excerpt: Data Analysis Methods in Physical Oceanography is a practical referenceguide to established and modern data analysis techniques in earth and oceansciences. This second and revised edition is even more comprehensive with numerous updates, and an additional appendix on 'Convolution and Fourier transforms'. Intended for both students and established scientists, the fivemajor chapters of the book cover data acquisition and recording, dataprocessing and presentation, statistical methods and error handling,analysis of spatial data fields, and time series analysis methods. Chapter 5on time series analysis is a book in itself, spanning a wide diversity oftopics from stochastic processes and stationarity, coherence functions,Fourier analysis, tidal harmonic analysis, spectral and cross-spectralanalysis, wavelet and other related methods for processing nonstationarydata series, digital filters, and fractals. The seven appendices includeunit conversions, approximation methods and nondimensional numbers used ingeophysical fluid dynamics, presentations on convolution, statisticalterminology, and distribution functions, and a number of importantstatistical tables. Twenty pages are devoted to references. Featuring:• An in-depth presentation of modern techniques for the analysis of temporal and spatial data sets collected in oceanography, geophysics, and other disciplines in earth and ocean sciences.• A detailed overview of oceanographic instrumentation and sensors - old and new - used to collect oceanographic data.• 7 appendices especially applicable to earth and ocean sciences ranging from conversion of units, through statistical tables, to terminology and non-dimensional parameters. In praise of the first edition: "(...)This is a very practical guide to the various statistical analysis methods used for obtaining information from geophysical data, with particular reference to oceanography(...)The book provides both a text for advanced students of the geophysical sciences and a useful reference volume for researchers." Aslib Book Guide Vol 63, No. 9, 1998 "(...)This is an excellent book that I recommend highly and will definitely use for my own research and teaching." EOS Transactions, D.A. Jay, 1999 "(...)In summary, this book is the most comprehensive and practical source of information on data analysis methods available to the physical oceanographer. The reader gets the benefit of extremely broad coverage and an excellent set of examples drawn from geographical observations." Oceanography, Vol. 12, No. 3, A. Plueddemann, 1999 "(...)Data Analysis Methods in Physical Oceanography is highly recommended for a wide range of readers, from the relative novice to the experienced researcher. It would be appropriate for academic and special libraries." E-Streams, Vol. 2, No. 8, P. Mofjelf, August 1999

Download or read book Optical Fibre Sensors written by Ignacio Del Villar and published by John Wiley & Sons. This book was released on 2020-10-15 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt: The most complete, one-stop reference for fiber optic sensor theory and application Optical Fiber Sensors: Fundamentals for Development of Optimized Devices constitutes the most complete, comprehensive, and up-to-date reference on the development of optical fiber sensors. Edited by two respected experts in the field and authored by experienced engineers and scientists, the book acts as a guide and a reference for an audience ranging from graduate students to researchers and engineers in the field of fiber optic sensors. The book discusses the fundamentals and foundations of fiber optic sensor technology and provides real-world examples to illuminate and illustrate the concepts found within. In addition to the basic concepts necessary to understand this technology, Optical Fiber Sensors includes chapters on: Distributed sensing with Rayleigh, Raman and Brillouin scattering methods Biomechanical sensing Gas and volatile organic compound sensors Application of nanotechnology to optical fiber sensors Health care and clinical diagnosis And others Graduate students as well as professionals who work with optical fiber sensors will find this volume to be an indispensable resource and reference.

Download or read book Enhance Oil and Gas Exploration with Data Driven Geophysical and Petrophysical Models written by Keith R. Holdaway and published by John Wiley & Sons. This book was released on 2017-10-04 with total page 283 pages. Available in PDF, EPUB and Kindle. Book excerpt: Leverage Big Data analytics methodologies to add value to geophysical and petrophysical exploration data Enhance Oil & Gas Exploration with Data-Driven Geophysical and Petrophysical Models demonstrates a new approach to geophysics and petrophysics data analysis using the latest methods drawn from Big Data. Written by two geophysicists with a combined 30 years in the industry, this book shows you how to leverage continually maturing computational intelligence to gain deeper insight from specific exploration data. Case studies illustrate the value propositions of this alternative analytical workflow, and in-depth discussion addresses the many Big Data issues in geophysics and petrophysics. From data collection and context through real-world everyday applications, this book provides an essential resource for anyone involved in oil and gas exploration. Recent and continual advances in machine learning are driving a rapid increase in empirical modeling capabilities. This book shows you how these new tools and methodologies can enhance geophysical and petrophysical data analysis, increasing the value of your exploration data. Apply data-driven modeling concepts in a geophysical and petrophysical context Learn how to get more information out of models and simulations Add value to everyday tasks with the appropriate Big Data application Adjust methodology to suit diverse geophysical and petrophysical contexts Data-driven modeling focuses on analyzing the total data within a system, with the goal of uncovering connections between input and output without definitive knowledge of the system's physical behavior. This multi-faceted approach pushes the boundaries of conventional modeling, and brings diverse fields of study together to apply new information and technology in new and more valuable ways. Enhance Oil & Gas Exploration with Data-Driven Geophysical and Petrophysical Models takes you beyond traditional deterministic interpretation to the future of exploration data analysis.

Download or read book Oilfield Review written by and published by . This book was released on 2008 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Safety and Reliability Theory and Applications written by Marko Cepin and published by CRC Press. This book was released on 2017-06-14 with total page 3668 pages. Available in PDF, EPUB and Kindle. Book excerpt: Safety and Reliability – Theory and Applications contains the contributions presented at the 27th European Safety and Reliability Conference (ESREL 2017, Portorož, Slovenia, June 18-22, 2017). The book covers a wide range of topics, including: • Accident and Incident modelling • Economic Analysis in Risk Management • Foundational Issues in Risk Assessment and Management • Human Factors and Human Reliability • Maintenance Modeling and Applications • Mathematical Methods in Reliability and Safety • Prognostics and System Health Management • Resilience Engineering • Risk Assessment • Risk Management • Simulation for Safety and Reliability Analysis • Structural Reliability • System Reliability, and • Uncertainty Analysis. Selected special sessions include contributions on: the Marie Skłodowska-Curie innovative training network in structural safety; risk approaches in insurance and fi nance sectors; dynamic reliability and probabilistic safety assessment; Bayesian and statistical methods, reliability data and testing; oganizational factors and safety culture; software reliability and safety; probabilistic methods applied to power systems; socio-technical-economic systems; advanced safety assessment methodologies: extended Probabilistic Safety Assessment; reliability; availability; maintainability and safety in railways: theory & practice; big data risk analysis and management, and model-based reliability and safety engineering. Safety and Reliability – Theory and Applications will be of interest to professionals and academics working in a wide range of industrial and governmental sectors including: Aeronautics and Aerospace, Automotive Engineering, Civil Engineering, Electrical and Electronic Engineering, Energy Production and Distribution, Environmental Engineering, Information Technology and Telecommunications, Critical Infrastructures, Insurance and Finance, Manufacturing, Marine Industry, Mechanical Engineering, Natural Hazards, Nuclear Engineering, Offshore Oil and Gas, Security and Protection, Transportation, and Policy Making.

Download or read book Optical Waveguide Sensing and Imaging written by Wojtek J. Bock and published by Springer Science & Business Media. This book was released on 2007-12-14 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book explores various aspects of existing and emerging fiber and waveguide optics sensing and imaging technologies including recent advances in nanobiophotonics. The focus is both on fundamental and applied research as well as on applications in civil engineering, biomedical sciences, environment, security and defence. The book aims to provide a reference of state-of-the-art overviews covering a variety of topics on the interface of engineering and biomedical sciences.

Download or read book Treatise on Geophysics written by and published by Elsevier. This book was released on 2015-04-17 with total page 5604 pages. Available in PDF, EPUB and Kindle. Book excerpt: Treatise on Geophysics, Second Edition, is a comprehensive and in-depth study of the physics of the Earth beyond what any geophysics text has provided previously. Thoroughly revised and updated, it provides fundamental and state-of-the-art discussion of all aspects of geophysics. A highlight of the second edition is a new volume on Near Surface Geophysics that discusses the role of geophysics in the exploitation and conservation of natural resources and the assessment of degradation of natural systems by pollution. Additional features include new material in the Planets and Moon, Mantle Dynamics, Core Dynamics, Crustal and Lithosphere Dynamics, Evolution of the Earth, and Geodesy volumes. New material is also presented on the uses of Earth gravity measurements. This title is essential for professionals, researchers, professors, and advanced undergraduate and graduate students in the fields of Geophysics and Earth system science. Comprehensive and detailed coverage of all aspects of geophysics Fundamental and state-of-the-art discussions of all research topics Integration of topics into a coherent whole