Recent Advances in Hydraulic Fracturing

Recent Advances in Hydraulic Fracturing

Author: John L. Gidley

Publisher: Society of Petroleum Engineers

Published: 1989-01-01

Total Pages: 452

ISBN-13: 9781555630201

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Book Synopsis Recent Advances in Hydraulic Fracturing by : John L. Gidley

Download or read book Recent Advances in Hydraulic Fracturing written by John L. Gidley and published by Society of Petroleum Engineers. This book was released on 1989-01-01 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt:


Essentials of Hydraulic Fracturing

Essentials of Hydraulic Fracturing

Author: Ralph W. Veatch

Publisher: Pennwell Books

Published: 2017

Total Pages: 0

ISBN-13: 9781593703578

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Hydraulic fracturing was first developed in the United States during the 1940s and has since spread internationally. A proven technology that is reaching deeper and tighter formations, hydraulic fracturing now delivers hydrocarbons from fields previously considered economically unviable. Essentials of Hydraulic Fracturing focuses on consolidating the fundamental basics of fracturing technology with advances in extended horizontal wellbores and fracturing applications. It provides the essentials required to understand fracturing behavior and offers advice for applying that knowledge to fracturing treatment design and application. Essentials of Hydraulic Fracturingis a long-awaited text for petroleum engineering students, industry-wide hydraulic fracturing training courses or seminars, and practicing fracturing treatment engineers. Features include: Understanding of fracture propagation geometry and fracture conductivity and how it affects treatment results A focus on safety and environmental prudence Economic optimization of fracturing treatments Fracturing fluid system and propping agent performance Important considerations in designing the fracture treatment for both vertical and horizontal wellbores Algorithms and examples pertinent to treatment design and analysis Pre- and post-fracturing approaches and diagnostics for evaluating treatment performance Hydraulic fracturing model construction and applicability Comparative design examples Construction of spreadsheet calculations key to treatment designs


Book Synopsis Essentials of Hydraulic Fracturing by : Ralph W. Veatch

Download or read book Essentials of Hydraulic Fracturing written by Ralph W. Veatch and published by Pennwell Books. This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hydraulic fracturing was first developed in the United States during the 1940s and has since spread internationally. A proven technology that is reaching deeper and tighter formations, hydraulic fracturing now delivers hydrocarbons from fields previously considered economically unviable. Essentials of Hydraulic Fracturing focuses on consolidating the fundamental basics of fracturing technology with advances in extended horizontal wellbores and fracturing applications. It provides the essentials required to understand fracturing behavior and offers advice for applying that knowledge to fracturing treatment design and application. Essentials of Hydraulic Fracturingis a long-awaited text for petroleum engineering students, industry-wide hydraulic fracturing training courses or seminars, and practicing fracturing treatment engineers. Features include: Understanding of fracture propagation geometry and fracture conductivity and how it affects treatment results A focus on safety and environmental prudence Economic optimization of fracturing treatments Fracturing fluid system and propping agent performance Important considerations in designing the fracture treatment for both vertical and horizontal wellbores Algorithms and examples pertinent to treatment design and analysis Pre- and post-fracturing approaches and diagnostics for evaluating treatment performance Hydraulic fracturing model construction and applicability Comparative design examples Construction of spreadsheet calculations key to treatment designs


Environmental Impacts of Hydraulic Fracturing

Environmental Impacts of Hydraulic Fracturing

Author: Frank R. Spellman

Publisher: CRC Press

Published: 2024-10-03

Total Pages: 381

ISBN-13: 104012299X

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There is a strong need for further innovation and the development of viable renewable energy sources. Recent technological advances now allow natural gas supplies—previously believed inaccessible or nonexistent—to be discovered, mined, and processed for both industrial and consumer use. The technology, a controversial process called hydraulic fracturing, has greatly expanded natural gas production in the United States and elsewhere. As these practices have become more commonplace, concerns about the related environmental and public health impacts have also increased—one of the most significant concerns regarding the fluids that are injected into rock formations to cause the fracturing which contain potentially hazardous chemical additives. Environmental Impacts of Hydraulic Fracturing is a balanced and comprehensive guide to all aspects of hydraulic fracturing and covers all facets of the issue, including ongoing controversies about possible water pollution, drinking water contamination, and the potential for harmful chemical exposure. The author discusses both the pros and cons of hydraulic fracturing, explaining the process in great detail. Arguably the first book of its kind, this is the go-to text on the use and impacts of hydraulic fracturing. Includes suggestions and recommendations on how to mitigate environmental damage caused by hydraulic fracturing. Weighs the pros and cons of hydraulic fracturing. Describes the benefits of hydraulic fracturing and its importance for potential energy independence. Largely updated for this new, second edition.


Book Synopsis Environmental Impacts of Hydraulic Fracturing by : Frank R. Spellman

Download or read book Environmental Impacts of Hydraulic Fracturing written by Frank R. Spellman and published by CRC Press. This book was released on 2024-10-03 with total page 381 pages. Available in PDF, EPUB and Kindle. Book excerpt: There is a strong need for further innovation and the development of viable renewable energy sources. Recent technological advances now allow natural gas supplies—previously believed inaccessible or nonexistent—to be discovered, mined, and processed for both industrial and consumer use. The technology, a controversial process called hydraulic fracturing, has greatly expanded natural gas production in the United States and elsewhere. As these practices have become more commonplace, concerns about the related environmental and public health impacts have also increased—one of the most significant concerns regarding the fluids that are injected into rock formations to cause the fracturing which contain potentially hazardous chemical additives. Environmental Impacts of Hydraulic Fracturing is a balanced and comprehensive guide to all aspects of hydraulic fracturing and covers all facets of the issue, including ongoing controversies about possible water pollution, drinking water contamination, and the potential for harmful chemical exposure. The author discusses both the pros and cons of hydraulic fracturing, explaining the process in great detail. Arguably the first book of its kind, this is the go-to text on the use and impacts of hydraulic fracturing. Includes suggestions and recommendations on how to mitigate environmental damage caused by hydraulic fracturing. Weighs the pros and cons of hydraulic fracturing. Describes the benefits of hydraulic fracturing and its importance for potential energy independence. Largely updated for this new, second edition.


Hydraulic Fracturing

Hydraulic Fracturing

Author: Michael Berry Smith

Publisher: CRC Press

Published: 2015-12-16

Total Pages: 793

ISBN-13: 1466566922

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Hydraulic Fracturing effectively busts the myths associated with hydraulic fracturing. It explains how to properly engineer and optimize a hydraulically fractured well by selecting the right materials, evaluating the economic benefits of the project, and ensuring the safety and success of the people, environment, and equipment. From data estimation


Book Synopsis Hydraulic Fracturing by : Michael Berry Smith

Download or read book Hydraulic Fracturing written by Michael Berry Smith and published by CRC Press. This book was released on 2015-12-16 with total page 793 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hydraulic Fracturing effectively busts the myths associated with hydraulic fracturing. It explains how to properly engineer and optimize a hydraulically fractured well by selecting the right materials, evaluating the economic benefits of the project, and ensuring the safety and success of the people, environment, and equipment. From data estimation


Environmental Impacts of Hydraulic Fracturing

Environmental Impacts of Hydraulic Fracturing

Author: Frank R. Spellman

Publisher: CRC Press

Published: 2012-09-17

Total Pages: 465

ISBN-13: 146651468X

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There is a strong need for innovation and the development of viable renewable energy sources. Recent technological advances now allow natural gas supplies—previously believed inaccessible or nonexistent—to be discovered, mined, and processed for both industrial and consumer use. The technology, a controversial process that is alternatively called hydraulic fracturing, fracking, fracing, or hydrofracking, has greatly expanded natural gas production in the United States. Presenting a balanced discussion, Environmental Impacts of Hydraulic Fracturing is a comprehensive guide to all aspects of hydraulic fracturing used to extract natural gas, along with gas exploration and production in various shale fields. As the use of hydraulic fracturing has grown, concerns about its environmental and public health impacts have also increased—one of the most significant concerns being the fluids that are injected into rock formations to cause the fracturing contain potentially hazardous chemical additives. The book covers all facets of the issue, including ongoing controversies about the environmental and operator safety issues arising from possible water pollution, drinking water contamination, on-the-job safety hazards, and harmful chemical exposure to workers and residents near well areas. The author discusses both the pros and cons of hydraulic fracturing, explaining the process in great detail. He describes the benefits of hydraulic fracturing and its importance in making the United States energy independent by drilling for its own resources, as well as the potential impacts to the surrounding environment. The text also includes suggestions and recommendations on how to mitigate environmental damage. Arguably the first book of its kind, this is the go-to text on the use and impacts of hydraulic fracturing.


Book Synopsis Environmental Impacts of Hydraulic Fracturing by : Frank R. Spellman

Download or read book Environmental Impacts of Hydraulic Fracturing written by Frank R. Spellman and published by CRC Press. This book was released on 2012-09-17 with total page 465 pages. Available in PDF, EPUB and Kindle. Book excerpt: There is a strong need for innovation and the development of viable renewable energy sources. Recent technological advances now allow natural gas supplies—previously believed inaccessible or nonexistent—to be discovered, mined, and processed for both industrial and consumer use. The technology, a controversial process that is alternatively called hydraulic fracturing, fracking, fracing, or hydrofracking, has greatly expanded natural gas production in the United States. Presenting a balanced discussion, Environmental Impacts of Hydraulic Fracturing is a comprehensive guide to all aspects of hydraulic fracturing used to extract natural gas, along with gas exploration and production in various shale fields. As the use of hydraulic fracturing has grown, concerns about its environmental and public health impacts have also increased—one of the most significant concerns being the fluids that are injected into rock formations to cause the fracturing contain potentially hazardous chemical additives. The book covers all facets of the issue, including ongoing controversies about the environmental and operator safety issues arising from possible water pollution, drinking water contamination, on-the-job safety hazards, and harmful chemical exposure to workers and residents near well areas. The author discusses both the pros and cons of hydraulic fracturing, explaining the process in great detail. He describes the benefits of hydraulic fracturing and its importance in making the United States energy independent by drilling for its own resources, as well as the potential impacts to the surrounding environment. The text also includes suggestions and recommendations on how to mitigate environmental damage. Arguably the first book of its kind, this is the go-to text on the use and impacts of hydraulic fracturing.


Fracking

Fracking

Author: Michael D. Holloway

Publisher: John Wiley & Sons

Published: 2018-06-14

Total Pages: 799

ISBN-13: 1119364337

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Since the first edition of Fracking was published, hydraulic fracturing has continued to be hotly debated. Credited with bringing the US and other countries closer to "energy independence," and blamed for tainted drinking water and earthquakes, hydraulic fracturing ("fracking") continues to be one of the hottest topics and fiercely debated issues in the energy industry and in politics. Covering all of the latest advances in fracking since the first edition was published, this expanded and updated revision still contains all of the valuable original content for the engineer or layperson to understand the technology and its ramifications. Useful not only as a tool for the practicing engineer solve day-to-day problems that come with working in hydraulic fracturing, it is also a wealth of information covering the possible downsides of what many consider to be a very valuable practice. Many others consider it dangerous, and it is important to see both sides of the argument, from an apolitical, logical standpoint. While induced hydraulic fracturing utilizes many different engineering disciplines, this book explains these concepts in an easy to understand format. The primary use of this book shall be to increase the awareness of a new and emerging technology and what the various ramifications can be. The reader shall be exposed to many engineering concepts and terms. All of these ideas and practices shall be explained within the body. A science or engineering background is not required.


Book Synopsis Fracking by : Michael D. Holloway

Download or read book Fracking written by Michael D. Holloway and published by John Wiley & Sons. This book was released on 2018-06-14 with total page 799 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the first edition of Fracking was published, hydraulic fracturing has continued to be hotly debated. Credited with bringing the US and other countries closer to "energy independence," and blamed for tainted drinking water and earthquakes, hydraulic fracturing ("fracking") continues to be one of the hottest topics and fiercely debated issues in the energy industry and in politics. Covering all of the latest advances in fracking since the first edition was published, this expanded and updated revision still contains all of the valuable original content for the engineer or layperson to understand the technology and its ramifications. Useful not only as a tool for the practicing engineer solve day-to-day problems that come with working in hydraulic fracturing, it is also a wealth of information covering the possible downsides of what many consider to be a very valuable practice. Many others consider it dangerous, and it is important to see both sides of the argument, from an apolitical, logical standpoint. While induced hydraulic fracturing utilizes many different engineering disciplines, this book explains these concepts in an easy to understand format. The primary use of this book shall be to increase the awareness of a new and emerging technology and what the various ramifications can be. The reader shall be exposed to many engineering concepts and terms. All of these ideas and practices shall be explained within the body. A science or engineering background is not required.


Environmental Considerations Associated with Hydraulic Fracturing Operations

Environmental Considerations Associated with Hydraulic Fracturing Operations

Author: James A. Jacobs

Publisher: John Wiley & Sons

Published: 2019-04-05

Total Pages: 921

ISBN-13: 1119336112

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A guide to environmental and communication issues related to fracking and the best approach to protect communities Environmental Considerations Associated with Hydraulic Fracturing Operations offers a much-needed resource that explores the complex challenges of fracking by providing an understanding of the environmental and communication issues that are inherent with hydraulic fracturing. The book balances the current scientific knowledge with the uncertainty and risks associated with hydraulic fracking. In addition, the authors offer targeted approaches for helping to keep communities safe. The authors include an overview of the historical development of hydraulic fracturing and the technology currently employed. The book also explores the risk, prevention, and mitigation factors that are associated with fracturing. The authors also include legal cases, regulatory issues, and data on the cost of recovery. The volume presents audit checklists for gathering critical information and documentation to support the reliability of the current environmental conditions related to fracking operations and the impact fracking can have on a community. This vital resource: Contains the technical information and mitigation recommendations for safety and environmental issues related to hydraulic fracturing Offers an historical overview of conventional and unconventional oil and gas drilling Explains the geologic and technical issues associated with fracking of tight sand and shale formulations Presents numerous case studies from the United States EPA and other agencies Discusses issues of co-produced waste water and induced seismicity from the injection of wastewater Written for environmental scientists, geologists, engineers, regulators, city planners, attorneys, foresters, wildlife biologists, and others, Environmental Considerations Associated with Hydraulic Fracturing Operations offers a comprehensive resource to the complex environmental and communication issues related to fracking.


Book Synopsis Environmental Considerations Associated with Hydraulic Fracturing Operations by : James A. Jacobs

Download or read book Environmental Considerations Associated with Hydraulic Fracturing Operations written by James A. Jacobs and published by John Wiley & Sons. This book was released on 2019-04-05 with total page 921 pages. Available in PDF, EPUB and Kindle. Book excerpt: A guide to environmental and communication issues related to fracking and the best approach to protect communities Environmental Considerations Associated with Hydraulic Fracturing Operations offers a much-needed resource that explores the complex challenges of fracking by providing an understanding of the environmental and communication issues that are inherent with hydraulic fracturing. The book balances the current scientific knowledge with the uncertainty and risks associated with hydraulic fracking. In addition, the authors offer targeted approaches for helping to keep communities safe. The authors include an overview of the historical development of hydraulic fracturing and the technology currently employed. The book also explores the risk, prevention, and mitigation factors that are associated with fracturing. The authors also include legal cases, regulatory issues, and data on the cost of recovery. The volume presents audit checklists for gathering critical information and documentation to support the reliability of the current environmental conditions related to fracking operations and the impact fracking can have on a community. This vital resource: Contains the technical information and mitigation recommendations for safety and environmental issues related to hydraulic fracturing Offers an historical overview of conventional and unconventional oil and gas drilling Explains the geologic and technical issues associated with fracking of tight sand and shale formulations Presents numerous case studies from the United States EPA and other agencies Discusses issues of co-produced waste water and induced seismicity from the injection of wastewater Written for environmental scientists, geologists, engineers, regulators, city planners, attorneys, foresters, wildlife biologists, and others, Environmental Considerations Associated with Hydraulic Fracturing Operations offers a comprehensive resource to the complex environmental and communication issues related to fracking.


Hydraulic Fracture Modeling

Hydraulic Fracture Modeling

Author: Yu-Shu Wu

Publisher: Gulf Professional Publishing

Published: 2017-12-12

Total Pages: 566

ISBN-13: 0128129999

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Hydraulic Fracture Modeling delivers all the pertinent technology and solutions in one product to become the go-to source for petroleum and reservoir engineers. Providing tools and approaches, this multi-contributed reference presents current and upcoming developments for modeling rock fracturing including their limitations and problem-solving applications. Fractures are common in oil and gas reservoir formations, and with the ongoing increase in development of unconventional reservoirs, more petroleum engineers today need to know the latest technology surrounding hydraulic fracturing technology such as fracture rock modeling. There is tremendous research in the area but not all located in one place. Covering two types of modeling technologies, various effective fracturing approaches and model applications for fracturing, the book equips today’s petroleum engineer with an all-inclusive product to characterize and optimize today’s more complex reservoirs. Offers understanding of the details surrounding fracturing and fracture modeling technology, including theories and quantitative methods Provides academic and practical perspective from multiple contributors at the forefront of hydraulic fracturing and rock mechanics Provides today’s petroleum engineer with model validation tools backed by real-world case studies


Book Synopsis Hydraulic Fracture Modeling by : Yu-Shu Wu

Download or read book Hydraulic Fracture Modeling written by Yu-Shu Wu and published by Gulf Professional Publishing. This book was released on 2017-12-12 with total page 566 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hydraulic Fracture Modeling delivers all the pertinent technology and solutions in one product to become the go-to source for petroleum and reservoir engineers. Providing tools and approaches, this multi-contributed reference presents current and upcoming developments for modeling rock fracturing including their limitations and problem-solving applications. Fractures are common in oil and gas reservoir formations, and with the ongoing increase in development of unconventional reservoirs, more petroleum engineers today need to know the latest technology surrounding hydraulic fracturing technology such as fracture rock modeling. There is tremendous research in the area but not all located in one place. Covering two types of modeling technologies, various effective fracturing approaches and model applications for fracturing, the book equips today’s petroleum engineer with an all-inclusive product to characterize and optimize today’s more complex reservoirs. Offers understanding of the details surrounding fracturing and fracture modeling technology, including theories and quantitative methods Provides academic and practical perspective from multiple contributors at the forefront of hydraulic fracturing and rock mechanics Provides today’s petroleum engineer with model validation tools backed by real-world case studies


Microseismic Imaging of Hydraulic Fracturing

Microseismic Imaging of Hydraulic Fracturing

Author: Shawn Mawell

Publisher: SEG Books

Published: 2014-01-01

Total Pages: 212

ISBN-13: 1560803150

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Microseismic Imaging of Hydraulic Fracturing: Improved Engineering of Unconventional Shale Reservoirs (SEG Distinguished Instructor Series No. 17) covers the use of microseismic data to enhance engineering design of hydraulic fracturing and well completion. The book, which accompanies the 2014 SEG Distinguished Instructor Short Course, describes the design, acquisition, processing, and interpretation of an effective microseismic project. The text includes a tutorial of the basics of hydraulic fracturing, including the geologic and geomechanical factors that control fracture growth. In addition to practical issues associated with collecting and interpreting microseismic data, potential pitfalls and quality-control steps are discussed. Actual case studies are used to demonstrate engineering benefits and improved production through the use of microseismic monitoring. Providing a practical user guide for survey design, quality control, interpretation, and application of microseismic hydraulic fracture monitoring, this book will be of interest to geoscientists and engineers involved in development of unconventional reservoirs.


Book Synopsis Microseismic Imaging of Hydraulic Fracturing by : Shawn Mawell

Download or read book Microseismic Imaging of Hydraulic Fracturing written by Shawn Mawell and published by SEG Books. This book was released on 2014-01-01 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microseismic Imaging of Hydraulic Fracturing: Improved Engineering of Unconventional Shale Reservoirs (SEG Distinguished Instructor Series No. 17) covers the use of microseismic data to enhance engineering design of hydraulic fracturing and well completion. The book, which accompanies the 2014 SEG Distinguished Instructor Short Course, describes the design, acquisition, processing, and interpretation of an effective microseismic project. The text includes a tutorial of the basics of hydraulic fracturing, including the geologic and geomechanical factors that control fracture growth. In addition to practical issues associated with collecting and interpreting microseismic data, potential pitfalls and quality-control steps are discussed. Actual case studies are used to demonstrate engineering benefits and improved production through the use of microseismic monitoring. Providing a practical user guide for survey design, quality control, interpretation, and application of microseismic hydraulic fracture monitoring, this book will be of interest to geoscientists and engineers involved in development of unconventional reservoirs.


Plan to Study the Potential Impacts of Hydraulic Fracturing on Drinking Water Resources

Plan to Study the Potential Impacts of Hydraulic Fracturing on Drinking Water Resources

Author: U. S. Environmental Agency

Publisher: CreateSpace

Published: 2015-01-16

Total Pages: 190

ISBN-13: 9781507587553

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Natural gas plays a key role in our nation's clean energy future. Recent advances in drilling technologies-including horizontal drilling and hydraulic fracturing-have made vast reserves of natural gas economically recoverable in the US. Responsible development of America's oil and gas resources offers important economic, energy security, and environmental benefits. Hydraulic fracturing is a well stimulation technique used to maximize production of oil and natural gas in unconventional reservoirs, such as shale, coalbeds, and tight sands. During hydraulic fracturing, specially engineered fluids containing chemical additives and proppant are pumped under high pressure into the well to create and hold open fractures in the formation. These fractures increase the exposed surface area of the rock in the formation and, in turn, stimulate the flow of natural gas or oil to the wellbore. As the use of hydraulic fracturing has increased, so have concerns about its potential environmental and human health impacts. Many concerns about hydraulic fracturing center on potential risks to drinking water resources, although other issues have been raised. In response to public concern, the US Congress directed the US Environmental Protection Agency (EPA) to conduct scientific research to examine the relationship between hydraulic fracturing and drinking water resources. This study plan represents an important milestone in responding to the direction from Congress. EPA is committed to conducting a study that uses the best available science, independent sources of information, and a transparent, peer-reviewed process that will ensure the validity and accuracy of the results. The Agency will work in consultation with other federal agencies, state and interstate regulatory agencies, industry, non-governmental organizations, and others in the private and public sector in carrying out this study. Stakeholder outreach as the study is being conducted will continue to be a hallmark of our efforts, just as it was during the development of this study plan. The overall purpose of this study is to elucidate the relationship, if any, between hydraulic fracturing and drinking water resources. More specifically, the study has been designed to assess the potential impacts of hydraulic fracturing on drinking water resources and to identify the driving factors that affect the severity and frequency of any impacts. Based on the increasing development of shale gas resources in the US, and the comments EPA received from stakeholders, this study emphasizes hydraulic fracturing in shale formations. Portions of the research, however, are also intended to provide information on hydraulic fracturing in coalbed methane and tight sand reservoirs. The scope of the research includes the hydraulic fracturing water use lifecycle, which is a subset of the greater hydrologic cycle. For the purposes of this study, the hydraulic fracturing water lifecycle begins with water acquisition from surface or ground water and ends with discharge into surface waters or injection into deep wells. Specifically, the water lifecycle for hydraulic fracturing consists of water acquisition, chemical mixing, well injection, flowback and produced water (collectively referred to as "hydraulic fracturing wastewater"), and wastewater treatment and waste disposal.


Book Synopsis Plan to Study the Potential Impacts of Hydraulic Fracturing on Drinking Water Resources by : U. S. Environmental Agency

Download or read book Plan to Study the Potential Impacts of Hydraulic Fracturing on Drinking Water Resources written by U. S. Environmental Agency and published by CreateSpace. This book was released on 2015-01-16 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: Natural gas plays a key role in our nation's clean energy future. Recent advances in drilling technologies-including horizontal drilling and hydraulic fracturing-have made vast reserves of natural gas economically recoverable in the US. Responsible development of America's oil and gas resources offers important economic, energy security, and environmental benefits. Hydraulic fracturing is a well stimulation technique used to maximize production of oil and natural gas in unconventional reservoirs, such as shale, coalbeds, and tight sands. During hydraulic fracturing, specially engineered fluids containing chemical additives and proppant are pumped under high pressure into the well to create and hold open fractures in the formation. These fractures increase the exposed surface area of the rock in the formation and, in turn, stimulate the flow of natural gas or oil to the wellbore. As the use of hydraulic fracturing has increased, so have concerns about its potential environmental and human health impacts. Many concerns about hydraulic fracturing center on potential risks to drinking water resources, although other issues have been raised. In response to public concern, the US Congress directed the US Environmental Protection Agency (EPA) to conduct scientific research to examine the relationship between hydraulic fracturing and drinking water resources. This study plan represents an important milestone in responding to the direction from Congress. EPA is committed to conducting a study that uses the best available science, independent sources of information, and a transparent, peer-reviewed process that will ensure the validity and accuracy of the results. The Agency will work in consultation with other federal agencies, state and interstate regulatory agencies, industry, non-governmental organizations, and others in the private and public sector in carrying out this study. Stakeholder outreach as the study is being conducted will continue to be a hallmark of our efforts, just as it was during the development of this study plan. The overall purpose of this study is to elucidate the relationship, if any, between hydraulic fracturing and drinking water resources. More specifically, the study has been designed to assess the potential impacts of hydraulic fracturing on drinking water resources and to identify the driving factors that affect the severity and frequency of any impacts. Based on the increasing development of shale gas resources in the US, and the comments EPA received from stakeholders, this study emphasizes hydraulic fracturing in shale formations. Portions of the research, however, are also intended to provide information on hydraulic fracturing in coalbed methane and tight sand reservoirs. The scope of the research includes the hydraulic fracturing water use lifecycle, which is a subset of the greater hydrologic cycle. For the purposes of this study, the hydraulic fracturing water lifecycle begins with water acquisition from surface or ground water and ends with discharge into surface waters or injection into deep wells. Specifically, the water lifecycle for hydraulic fracturing consists of water acquisition, chemical mixing, well injection, flowback and produced water (collectively referred to as "hydraulic fracturing wastewater"), and wastewater treatment and waste disposal.