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Induced Seismicity During The Hydraulic Stimulation Of The Potential Hot Dry Rock Geothermal Reservoir
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Book Synopsis Induced Seismicity During the Hydraulic Stimulation of the Potential Hot Dry Rock Geothermal Reservoir by : R. Baria
Download or read book Induced Seismicity During the Hydraulic Stimulation of the Potential Hot Dry Rock Geothermal Reservoir written by R. Baria and published by . This book was released on with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Committee on Induced Seismicity Potential in Energy Technologies Publisher :National Academies Press ISBN 13 :0309253683 Total Pages :238 pages Book Rating :4.3/5 (92 download)
Book Synopsis Induced Seismicity Potential in Energy Technologies by : Committee on Induced Seismicity Potential in Energy Technologies
Download or read book Induced Seismicity Potential in Energy Technologies written by Committee on Induced Seismicity Potential in Energy Technologies and published by National Academies Press. This book was released on 2013-08-28 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the past several years, some energy technologies that inject or extract fluid from the Earth, such as oil and gas development and geothermal energy development, have been found or suspected to cause seismic events, drawing heightened public attention. Although only a very small fraction of injection and extraction activities among the hundreds of thousands of energy development sites in the United States have induced seismicity at levels noticeable to the public, understanding the potential for inducing felt seismic events and for limiting their occurrence and impacts is desirable for state and federal agencies, industry, and the public at large. To better understand, limit, and respond to induced seismic events, work is needed to build robust prediction models, to assess potential hazards, and to help relevant agencies coordinate to address them. Induced Seismicity Potential in Energy Technologies identifies gaps in knowledge and research needed to advance the understanding of induced seismicity; identify gaps in induced seismic hazard assessment methodologies and the research to close those gaps; and assess options for steps toward best practices with regard to energy development and induced seismicity potential.
Book Synopsis Enhanced Geothermal Systems (EGS) by : Dornadula Chandrasekharam
Download or read book Enhanced Geothermal Systems (EGS) written by Dornadula Chandrasekharam and published by CRC Press. This book was released on 2023-10-02 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: Peter Meisen, Past President, Global Energy Network Institute, asked in 1997, “What if there was an existing, viable technology, that when developed to its highest potential could increase everyone’s standard of living, cut fossil fuel demand and the resultant pollution?” After 23 years of sustained effort by the global scientific community, this is becoming a reality. The technology to extract heat from granite has been revolutionized in the last few years. The classical method of creating fracture networks by hydrofracturing is being replaced by a closed-loop method where fluids are not in contact with the hot granite. Supercritical CO2 is replacing water as a circulating fluid. Certainly, the future energy road is going to be led by highly radiogenic granites. While hydrothermal sources are site-specific and have their limitations, EGS can be initiated anywhere on earth. EGS is removing all such obstacles and, in the future, will provide uninterrupted electricity for all. Energy-deficient countries can have surplus electricity; water-stressed countries can have a perennial freshwater supply; and countries can become food-secure and rise above poverty levels. Countries need not depend on energy imports and can independently evolve into carbon neutral or low carbon societies. The contributions made by experts will help researchers and investors to close the energy demand and supply gap in the very near future by tapping the unlimited energy of the Earth. Opportunities available for investors in Turkey are well documented with field, geophysical, and geochemical data and information on the energy generating capacity of the granite intrusive spread over a cumulative area of 6,910 km2 in western Anatolia. With the signing of the Global Geothermal Alliance (GGA) by several countries during the December 2015 CoP 21 (Conference of Parties) summit in Paris, countries are obliged to reduce CO2 emissions by increasing the footprint of renewable energy in the primary source mix. Information provided in this book will lead the way to establishing a clean energy future for millions of people for sustainable development and help to mitigate crises arising due to food, water, and energy shortage issues. Academic and research institutes will benefit to a large extent from the expertise of the top contributors in this book. This information provided in this book will help to lay the foundation for super-hot EGS research in future.
Book Synopsis Fluid-Induced Seismicity by : Serge A. Shapiro
Download or read book Fluid-Induced Seismicity written by Serge A. Shapiro and published by Cambridge University Press. This book was released on 2015-04-23 with total page 299 pages. Available in PDF, EPUB and Kindle. Book excerpt: The characterisation of fluid transport properties of rocks is one of the most important, yet difficult, challenges of reservoir geophysics, but is essential for optimal development of hydrocarbon and geothermal reservoirs. This book provides a quantitative introduction to the underlying physics, application, interpretation, and hazard aspects of fluid-induced seismicity with a particular focus on its spatio-temporal dynamics. It presents many real data examples of microseismic monitoring of hydraulic fracturing at hydrocarbon fields and of stimulations of enhanced geothermal systems. The author also covers introductory aspects of linear elasticity and poroelasticity theory, as well as elements of seismic rock physics and mechanics of earthquakes, enabling readers to develop a comprehensive understanding of the field. Fluid-Induced Seismicity is a valuable reference for researchers and graduate students working in the fields of geophysics, geology, geomechanics and petrophysics, and a practical guide for petroleum geoscientists and engineers working in the energy industry.
Book Synopsis Understanding the Relationship Between Hydraulic Properties of Rocks and Induced Seismicity in the Stimulation of Enhanced Geothermal Systems by : Jeremy Riffault
Download or read book Understanding the Relationship Between Hydraulic Properties of Rocks and Induced Seismicity in the Stimulation of Enhanced Geothermal Systems written by Jeremy Riffault and published by . This book was released on 2019 with total page 199 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis discusses the construction of numerical models to gain insight on Enhanced Geothermal System (EGS) stimulation operations. These operations consist of high pressure injection of cold water in low permeability formations at depth of 2-4 kilometres, promoting the opening of existing fractures and creating an artificial geothermal reservoir. Typically a large seismicity cloud is generated. The physical mechanisms involved in permeability enhancement and seismicity triggering are numerous, and their relative importance is not always agreed on, which makes designing such operations challenging. The extent of the stimulated volume, that underwent permeability enhancement is the principal metric of the success of an EGS stimulation operation, and is not measurable, or estimated only through the size of the seismically active volume. We address those two issues using a novel modelling approach. While a simple physics-based permeability model is explored, most of our efforts are directed to the development of an empirical permeability inversion method. We demonstrate that seismicity density can be used as a proxy for pressure increase. The pressure distribution itself is a function of the hydrological properties evolution, permeability and porosity, with space and time in the course of the stimulation. We create an inverse modelling approach in which permeability enhancement candidate scenarios are proposed until the modelled seismicity density distribution matches the observations. These permeability scenarios have no physical motivation, and thus do not embed any assumptions or bias on the physical mechanisms responsible for stimulation. Stimulation parameters, injection rate and pressure, are also considered in the inversion. Special attention is given to the impact of parameter and observation uncertainty, as well as structural error, on the robustness of our conclusions. We consider two Australian Enhanced Geothermal System projects, Habanero and Paralana, where stimulations were conducted in 2003 and 2011, respectively. Large planar clouds of micro-seismicity were recorded in both cases, with 10,436 and 4,753 events recorded above magnitude of completeness for Habanero and Paralana respectively. A one-dimensional radial geometry version of our inversion method is applied to the Paralana dataset. The recovered permeability regime implies that the bulk of permeability enhancement, up to 30x its initial values, occurred within a 60 m radius of the wellbore and was not coincident with the bulk of the seismicity, which extends more than 400 m away from the injection point. Thus, permeability enhancement and induced seismicity are decoupled in this case, contrary to the traditional assumption in EGS modelling. Hydroshearing seemed to have not been responsible for much permeability increase. The two-dimensional version of the inversion is applied to the Habanero dataset. The solution range is less constrained than for the radial inversion, but still provides some insight on the stimulation process. Large scale permeability enhancement (> x10) is limited to volumes in the vicinity of the wellbore, representing approximately 5 % of the seismically active volume. This method, which already provides valuable insight on stimulation success, could be improved and be of great help to the future of EGS projects.
Book Synopsis Geothermal Energy by : Ingrid Stober
Download or read book Geothermal Energy written by Ingrid Stober and published by Springer Science & Business Media. This book was released on 2013-12-03 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: The internal heat of the planet Earth represents an inexhaustible reservoir of thermal energy. This form of energy, known as geothermal energy has been utilized throughout human history in the form of hot water from hot springs. Modern utilization of geothermal energy includes direct use of the heat and its conversion to other forms of energy, mainly electricity. Geothermal energy is a form of renewable energy and its use is associated with very little or no CO2-emissions and its importance as an energy source has greatly increased as the effects of climate change become more prominent. Because of its inexhaustibility it is obvious that utilization of geothermal energy will become a cornerstone of future energy supplies. The exploration of geothermal resources has become an important topic of study as geology and earth science students prepare to meet the demands of a rapidly growing industry, which involves an increasing number professionals and public institutions participating in geothermal energy related projects. This book meets the demands of both groups of readers, students and professionals. Geothermal Energy and its utilization is systematically presented and contains the necessary technical information needed for developing and understanding geothermal energy projects. It presents basic knowledge on the Earth’s thermal regime and its geothermal energy resources, the types of geothermal energy used as well as its future potential and the perspectives of the industry. Specific chapters of the book deal with borehole heat exchangers and with the direct use of groundwater and thermal water in hydrogeothermal systems. A central topic are Enhanced Geothermal Systems (hot-dry-rock systems), a key technology for energy supply in the near future. Pre-drilling site investigations, drilling technology, well logging and hydraulic test programs are important subjects related to the exploration phase of developing Geothermal Energy sites. The chemical composition of the natural waters used as a heat transport medium in geothermal systems can be used as an exploration tool, but chemistry is also important during operation of a geothermal power plant because of potential scale formation and corrosion of pipes and installations, which needs to be prevented. Graduate students and professionals will find in depth information on Geothermal Energy, its exploration and utilization.
Book Synopsis Energy from the Earth by : Stefan Hirschberg
Download or read book Energy from the Earth written by Stefan Hirschberg and published by vdf Hochschulverlag AG. This book was released on 2014-11-19 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt: Switzerland's Energy Strategy 2050 requires energy efficiency to be substantially improved, the proportion of fossil fuels in the energy supply to be considerably reduced, and nuclear power to be phased out, while meeting highly ambitious climate protection targets. One of the core implications is the need for a massive increase of the use of renewable sources for electricity generation. In this context, the Swiss Federal Office of Energy (SFOE) estimates that by 2050 deep geothermal energy could contribute 4–5 TWh per year to electricity generation in Switzerland, which would be a substantial contribution to a projected annual power need of 60 TWh. Geothermal energy is attractive because of the very large scale of the resource, its expected relatively low CO2 emissions, and its reliable, all-day domestic availability. However, the future contribution of deep geothermal energy is subject to major uncertainties: How much of this resource can be exploited and at what economic cost? What are the environmental and risk-related externalities that the public must be willing to bear? How does its overall performance compare to competing energy resources? And will the regulatory framework and public acceptance be sufficient to allow geothermal energy to provide a significant contribution? By way of this major interdisciplinary study, already considered a work of reference, TA-SWISS provides answers to these questions in a comprehensive and balanced way, thereby supplying a sound basis for stakeholder decision-making.
Book Synopsis Potential for Triggering of Earthquakes by Stimulation of Dry Rock Geothermal Fields by :
Download or read book Potential for Triggering of Earthquakes by Stimulation of Dry Rock Geothermal Fields written by and published by . This book was released on 1977 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Stimulation of dry geothermal fields requires the injection of very large volumes of fluid, probably at pressures in excess of the least principal stress in the rocks. The high fluid pressure, if transmitted along faults under shear stress would reduce sigma/sub n/, the effective normal stress, and hence the frictional resistance to sliding along the fault. Earthquakes triggered by water flooding in the Rangely oil field in Colorado are discussed. Calculations indicate that earthquakes are likely to be triggered by fluid injection where the injection pressure is at or near the magnitude of the least principal stress. (JGB).
Book Synopsis Hot Dry Rock Geothermal Energy by : Roger H. Parker
Download or read book Hot Dry Rock Geothermal Energy written by Roger H. Parker and published by . This book was released on 1989 with total page 746 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Acoustic Emission/Microseismic Activity by : Jr., H. Reginald Hardy
Download or read book Acoustic Emission/Microseismic Activity written by Jr., H. Reginald Hardy and published by CRC Press. This book was released on 2003-01-01 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: A study of topics related to acoustic emission/microseismic (AE/MS) activity. It covers basic material behaviour, stress wave propagation, transducer design and installation, electronic instrumentation, data acquisition and analysis, and signal processing, as well as practical applications.
Book Synopsis The Mechanism of Induced Seismicity by : Cezar I. Trifu
Download or read book The Mechanism of Induced Seismicity written by Cezar I. Trifu and published by Birkhäuser. This book was released on 2012-12-06 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Stress Control of Seismicity Patterns Observed During Hydraulic Fracturing Experiments at the Fenton Hill Hot Dry Rock Geothermal Energy Site, New Mexico by :
Download or read book Stress Control of Seismicity Patterns Observed During Hydraulic Fracturing Experiments at the Fenton Hill Hot Dry Rock Geothermal Energy Site, New Mexico written by and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Seismicity accompanying hydraulic injections into granitic rock is often diffuse rather than falling along a single plane. This diffuse zone of seismicity cannot be attributed to systematic errors in locations of the events. It has often been asserted that seismicity occurs along preexisting joints in the rock that are favorably aligned with the stress field so that slip can occur along them when effective stress is reduced by increasing pore fluid pressure. A new scheme for determining orientations and locations of planes along which the microearthquakes occurred was recently developed. The basic assumption of the method, called the three point method, is that many of the events fall along well defined planes; these planes are often difficult to identify visually in the data because planes of many orientations are present. The method has been applied to four hydraulic fracturing experiments conducted at Fenton Hill as part of a hot dry rock geothermal energy project. While multiple planes are found for each experiment; one plane is common to all experiments. The ratio of shear to normal stress along planes of all orientations is calculated using a best estimate of the current stress state at Fenton Hill. The plane common to all experiments has the highest ratio of shear to normal stress acting along it, so it is the plane most likely to slip. The other planes found by the three point method all have orientations with respect to current principal stresses that are favorable for slip to occur along preexisting planes of weakness. These results are consistent with the assertion that the rock contains pre-existing joints which slip when the effective stress is reduced by the increased pore fluid pressure accompanying the hydraulic injection. Microearthquakes occur along those planes that are favorably aligned with respect to the current stress field.
Book Synopsis Discrete Fracture Network Modeling of Hydraulic Stimulation by : Mark W. McClure
Download or read book Discrete Fracture Network Modeling of Hydraulic Stimulation written by Mark W. McClure and published by Springer Science & Business Media. This book was released on 2013-06-15 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: Discrete Fracture Network Modeling of Hydraulic Stimulation describes the development and testing of a model that couples fluid-flow, deformation, friction weakening, and permeability evolution in large, complex two-dimensional discrete fracture networks. The model can be used to explore the behavior of hydraulic stimulation in settings where matrix permeability is low and preexisting fractures play an important role, such as Enhanced Geothermal Systems and gas shale. Used also to describe pure shear stimulation, mixed-mechanism stimulation, or pure opening-mode stimulation. A variety of novel techniques to ensure efficiency and realistic model behavior are implemented, and tested. The simulation methodology can also be used as an efficient method for directly solving quasistatic fracture contact problems. Results show how stresses induced by fracture deformation during stimulation directly impact the mechanism of propagation and the resulting fracture network.
Book Synopsis Rock Fractures and Fluid Flow by : National Research Council
Download or read book Rock Fractures and Fluid Flow written by National Research Council and published by National Academies Press. This book was released on 1996-08-27 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt: Scientific understanding of fluid flow in rock fracturesâ€"a process underlying contemporary earth science problems from the search for petroleum to the controversy over nuclear waste storageâ€"has grown significantly in the past 20 years. This volume presents a comprehensive report on the state of the field, with an interdisciplinary viewpoint, case studies of fracture sites, illustrations, conclusions, and research recommendations. The book addresses these questions: How can fractures that are significant hydraulic conductors be identified, located, and characterized? How do flow and transport occur in fracture systems? How can changes in fracture systems be predicted and controlled? Among other topics, the committee provides a geomechanical understanding of fracture formation, reviews methods for detecting subsurface fractures, and looks at the use of hydraulic and tracer tests to investigate fluid flow. The volume examines the state of conceptual and mathematical modeling, and it provides a useful framework for understanding the complexity of fracture changes that occur during fluid pumping and other engineering practices. With a practical and multidisciplinary outlook, this volume will be welcomed by geologists, petroleum geologists, geoengineers, geophysicists, hydrologists, researchers, educators and students in these fields, and public officials involved in geological projects.
Book Synopsis Mining the Earth's Heat: Hot Dry Rock Geothermal Energy by : Donald W. Brown
Download or read book Mining the Earth's Heat: Hot Dry Rock Geothermal Energy written by Donald W. Brown and published by Springer Science & Business Media. This book was released on 2012-04-23 with total page 669 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mining the Earth's Heat: Hot Dry Rock Geothermal Energy describes the work carried out by the Los Alamos National Laboratory to turn an idealistic concept - that of drawing useful amounts of energy from the vast underground store of hot rock at reachable depths - into a practical reality. This book provides comprehensive documentation of the over two decades of experiments carried out at the test site at Fenton Hill, New Mexico, where the feasibility of accessing and extracting this vast natural resource was finally demonstrated. It also discusses the numerous technical, administrative, and financial hurdles that had to be overcome along the way. This publication will no doubt prove invaluable to researchers around the world as they strive to move this now-proven technology toward commercial viability. In addition, it is a valuable source of relevant information for anyone interested in the world energy outlook for the 21st century and beyond.
Book Synopsis Potential for Triggering of Earthquakes by Stimulation of Dry Rock Geothermal Fields by : C. B. Raleigh
Download or read book Potential for Triggering of Earthquakes by Stimulation of Dry Rock Geothermal Fields written by C. B. Raleigh and published by . This book was released on 1977 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Geothermal Reservoir Engineering by : Malcolm Alister Grant
Download or read book Geothermal Reservoir Engineering written by Malcolm Alister Grant and published by Academic Press. This book was released on 2011-04-01 with total page 379 pages. Available in PDF, EPUB and Kindle. Book excerpt: As nations alike struggle to diversify and secure their power portfolios, geothermal energy, the essentially limitless heat emanating from the earth itself, is being harnessed at an unprecedented rate. For the last 25 years, engineers around the world tasked with taming this raw power have used Geothermal Reservoir Engineering as both a training manual and a professional reference. This long-awaited second edition of Geothermal Reservoir Engineering is a practical guide to the issues and tasks geothermal engineers encounter in the course of their daily jobs. The book focuses particularly on the evaluation of potential sites and provides detailed guidance on the field management of the power plants built on them. With over 100 pages of new material informed by the breakthroughs of the last 25 years, Geothermal Reservoir Engineering remains the only training tool and professional reference dedicated to advising both new and experienced geothermal reservoir engineers. - The only resource available to help geothermal professionals make smart choices in field site selection and reservoir management - Practical focus eschews theory and basics- getting right to the heart of the important issues encountered in the field - Updates include coverage of advances in EGS (enhanced geothermal systems), well stimulation, well modeling, extensive field histories and preparing data for reservoir simulation - Case studies provide cautionary tales and best practices that can only be imparted by a seasoned expert
