Read it cover-to-cover as a complete primer, read it a section at a time as it comes up in your profession, and keep it handy as a quick reference.
New to this edition:
* A chapter on unconventional oil and gas (including gas shales)
* Modern tools used in well logging
* Modern drilling rig methods and equipment
* Expanded glossary includes 1,500 new terms
* More figures and plates
* Up-to-date statistics
Phenomenal reviews and sales greeted the hardcover publication of The Big Rich, New York Times bestselling author Bryan Burrough's spellbinding chronicle of Texas oil. Weaving together the multigenerational sagas of the industry's four wealthiest families, Burrough brings to life the men known in their day as the Big Four: Roy Cullen, H. L. Hunt, Clint Murchison, and Sid Richardson, all swaggering Texas oil tycoons who owned sprawling ranches and mingled with presidents and Hollywood stars. Seamlessly charting their collective rise and fall, The Big Rich is a hugely entertaining account that only a writer with Burrough's abilities-and Texas upbringing-could have written.
The world is running short of energy-especially cheap, easy-to-find oil. Shortages, along with resulting price increases, threaten industrialized civilization, the global economy, and our entire way of life.
In Confronting Collapse, author Michael C. Ruppert, a former LAPD narcotics officer turned investigative journalist, details the intricate connections between money and energy, including the ways in which oil shortages and price spikes triggered the economic crash that began in September 2008. Given the 96 percent correlation between economic growth and greenhouse gas emissions and the unlikelihood of economic growth without a spike in energy use, Ruppert argues that we are not, in fact, on the verge of economic recovery, but on the verge of complete collapse.
Ruppert's truth is not merely inconvenient. It is utterly devastating.
But there is still hope. Ruppert outlines a 25-point plan of action, including the creation of a second strategic petroleum reserve for the use of state and local governments, the immediate implementation of a national Feed-in Tariff mandating that electric utilities pay 3 percent above market rates for all surplus electricity generated from renewable sources, a thorough assessment of soil conditions nationwide, and an emergency action plan for soil restoration and sustainable agriculture.
* Course book based on course well completion design by TRACS International
* Unique in its field: Coverage of offshore, subsea, and landbased completions in all of the major hydrocarbon basins of the world.
* Full colour
In The Coming Oil Storm Rhodes documents the role of Islam as the religion in control of most of the world's oil reserves and shows convincingly that once Muslims are in possession of the two swords of oil and nuclear weapons, they will feel empowered to act as they wish. Oil could even play a role in the path to Armageddon.
The Coming Oil Storm is an essential guide for understanding the state of the world today...and what's yet to come.
Comprised of 21 chapters, the book walks readers through the steps of pipeline construction and management. The comprehensive guide that this source provides enables engineers and technicians to manage routine auditing of technical work output relative to technical input and established expectations and standards, and to assess and estimate the work, including design integrity and product requirements, from its research to completion.
Design, piping, civil, mechanical, petroleum, chemical, project production and project reservoir engineers, including novices and students, will find this book invaluable for their engineering practices.Back-of-the envelope calculationsChecklists for maintenance operationsChecklists for environmental complianceSimulations, modeling tools and equipment designGuide for pump and pumping station placement
Petroleum Production Systems, Second Edition, is the comprehensive source for clear and fundamental methods for about modern petroleum production engineering practice. Written by four leading experts, it thoroughly introduces modern principles of petroleum production systems design and operation, fully considering the combined behavior of reservoirs, surface equipment, pipeline systems, and storage facilities. Long considered the definitive text for production engineers, this edition adds extensive new coverage of hydraulic fracturing, with emphasis on well productivity optimization. It presents new chapters on horizontal wells and well performance evaluation, including production data analysis and sand management.
This edition featuresA structured approach spanning classical production engineering, well testing, production logging, artificial lift, and matrix and hydraulic fracture stimulation Revisions throughout to reflect recent innovations and extensive feedback from both students and colleagues Detailed coverage of modern best practices and their rationales Unconventional oil and gas well design Many new examples and problems Detailed data sets for three characteristic reservoir types: an undersaturated oil reservoir, a saturated oil reservoir, and a gas reservoir
The book's main focus is primarily on the equipment and processes used in exploring new resources; evaluating promising formations; drilling wells; managing oil and gas production; converting oil and gas into products; and transporting oil and gas. Separate chapters address the evolution and current structure of the petroleum industry; oil and gas trading; and challenges likely to face the oil and gas industry in coming years.
Three appendices define key industry terminology; suggest further reading on selected topics; and identify organizations that can provide more information.
For decades, environmentalists have told us that using fossil fuels is a self-destructive addiction that will destroy our planet. Yet at the same time, by every measure of human well-being, from life expectancy to clean water to climate safety, life has been getting better and better.
How can this be?
The explanation, energy expert Alex Epstein argues in The Moral Case for Fossil Fuels, is that we usually hear only one side of the story. We’re taught to think only of the negatives of fossil fuels, their risks and side effects, but not their positives—their unique ability to provide cheap, reliable energy for a world of seven billion people. And the moral significance of cheap, reliable energy, Epstein argues, is woefully underrated. Energy is our ability to improve every single aspect of life, whether economic or environmental.
If we look at the big picture of fossil fuels compared with the alternatives, the overall impact of using fossil fuels is to make the world a far better place. We are morally obligated to use more fossil fuels for the sake of our economy and our environment.
Drawing on original insights and cutting-edge research, Epstein argues that most of what we hear about fossil fuels is a myth. For instance . . .
Myth: Fossil fuels are dirty.
Truth: The environmental benefits of using fossil fuels far outweigh the risks. Fossil fuels don’t take a naturally clean environment and make it dirty; they take a naturally dirty environment and make it clean. They don’t take a naturally safe climate and make it dangerous; they take a naturally dangerous climate and make it ever safer.
Myth: Fossil fuels are unsustainable, so we should strive to use “renewable” solar and wind.
Truth: The sun and wind are intermittent, unreliable fuels that always need backup from a reliable source of energy—usually fossil fuels. There are huge amounts of fossil fuels left, and we have plenty of time to find something cheaper.
Myth: Fossil fuels are hurting the developing world.
Truth: Fossil fuels are the key to improving the quality of life for billions of people in the developing world. If we withhold them, access to clean water plummets, critical medical machines like incubators become impossible to operate, and life expectancy drops significantly. Calls to “get off fossil fuels” are calls to degrade the lives of innocent people who merely want the same opportunities we enjoy in the West.
Taking everything into account, including the facts about climate change, Epstein argues that “fossil fuels are easy to misunderstand and demonize, but they are absolutely good to use. And they absolutely need to be championed. . . . Mankind’s use of fossil fuels is supremely virtuous—because human life is the standard of value and because using fossil fuels transforms our environment to make it wonderful for human life.”
``Well Cementing'' is envisioned as an upper-level university book, as well as a reference for practicing engineers and scientists. The first section of the book illustrates how the quality of the hydraulic seal provided by the cement sheath can affect well performance. The second section concentrates on the design phase of a cementing treatment, and various aspects of cement job execution are covered in the third section. The fourth section addresses cement job evaluation. The text is supported by many tables and figures, an extensive bibliography and an index. There are also chapters devoted to subjects which are currently of particular interest to the industry, including the prevention of annular gas migration, foamed cements, and cementing horizontal wellbores. The chemistry associated with well cementing is presented in detail.
Most of the contributors to this volume are employees of Dowell Schlumberger, one of the leading companies in this field.
*Provides complete coverage of the latest techniques used for designing and analyzing petroleum production systems
*Increases efficiency and addresses common problems by utilizing the computer-based solutions discussed within the book
* Presents principles of designing and selecting the main components of petroleum production systems
The book covers important topics, such as clean fuels, gasification, biofuels, and environmental impact of refining, which are not commonly discussed in most refinery textbooks. Throughout the source, problem sets and examples are given to help the reader practice and apply the fundamental principles of refining. Chapters 1-10 can be used as core materials for teaching undergraduate courses. The first two chapters present an introduction to the petroleum refining industry and then focus on feedstocks and products. Thermophysical properties of crude oils and petroleum fractions, including processes of atmospheric and vacuum distillations, are discussed in Chapters 3 and 4. Conversion processes, product blending, and alkylation are covered in chapters 5-10. The remaining chapters discuss hydrogen production, clean fuel production, refining economics and safety, acid gas treatment and removal, and methods for environmental and effluent treatments.
This source can serve both professionals and students (on undergraduate and graduate levels) of Chemical and Petroleum Engineering, Chemistry, and Chemical Technology. Beginners in the engineering field, specifically in the oil and gas industry, may also find this book invaluable.Provides balanced coverage of fundamental and operational topicsIncludes spreadsheets and process simulators for showing trends and simulation case studiesRelates processing to planning and management to give an integrated picture of refining
The book has two themes: one, the idea of preventing damage, and preventing formation from drilling into an oil formation to putting the well introduction stage; and two, the utilization of nodal system analysis method, which optimizes the pressure distribution from reservoir to well head, and plays the sensitivity analysis to design the tubing diameters first and then the production casing size, so as to achieve whole system optimization. With this book, drilling and production engineers should be able to improve operational efficiency by applying the latest state of the art technology in all facets of well completion during development drilling-completion and work over operations.One of the only books devoted to the key technologies for all major aspects of advanced well completion activities.Unique coverage of all aspects of well completion activities based on 25 years in the exploration, production and completion industry.Matchless in-depth technical advice for achieving operational excellence with advance solutions.
Strengthened with updated material and a new chapter on wellbore cleaning, The Guide to Oilwell Fishing Operations, Second Edition ensures that the life of the well will be saved no matter the unforeseen circumstances. Crucial aspects include:Enhancements with updated equipment, technology, and a new chapter on wellbore cleaning methodsAdditional input from worldwide service companies, providing a more comprehensive balance Remains the only all-inclusive guide exclusively devoted to fishing tools, techniques, and rules of thumbRemodeled with latest jars on the market, catch tools, and retrieving stuck packers with cutting technologyImproved with information on methods such as sidetracking and plug-and-abandon operationsModernized with approaches and tactics on more advanced well projects such as high-angle deviated and horizontal wells and expandable casing technology to repair casing failure and leaks
Topics covered in the handbook include:Processes to enhance productionWell modification to maximize oil and gas recoveryCompletion and evaluation of wells, well testing, and well surveys
Reservoir Engineering Handbook, Fourth Edition provides solid information and insight for engineers and students alike on maximizing production from a field in order to obtain the best possible economic return. With this handbook, professionals will find a valuable reference for understanding the key relationships among the different operating variables. Examples contained in this reference demonstrate the performance of processes under forceful conditions through a wide variety of applications.
• Fundamental for the advancement of reservoir engineering concepts
• Step-by-step field performance calculations
• Easy to understand analysis of oil recovery mechanisms
• Step-by-step analysis of oil recovery mechanisms
• New chapter on fractured reservoirs
Fully updated and expanded, this edition combines extensive information from the published literature with significant material never before published. The authors introduce superior techniques for every major petroleum-related tectonic setting in the world.
Coverage includes:A systematic, ten-step philosophy for subsurface interpretation and mapping The latest computer-based contouring concepts and applications Advanced manual and computer-based log correlation Integration of geophysical data into subsurface interpretations and mapping Cross-section construction: structural, stratigraphic, and problem-solving Interpretation and generation of valid fault, structure, and isochore maps New coverage of 3D seismic interpretation, from project setup through documentation Compressional and extensional structures: balancing and interpretation In-depth new coverage of strike-slip faulting and related structures Growth and correlation consistency techniques: expansion indices, Multiple Bischke Plot Analysis, vertical separation versus depth, and more Numerous field examples from around the world
Whatever your role in the adventure of finding and developing oil or gas resources–as a geologist, geophysicist, engineer, technologist, manager or investor–the tools presented in this book can make you significantly more effective in your daily technical or decision-oriented activities.
Gas-Liquid And Liquid-Liquid Separators is divided into six parts: Part one and two covers fundamentals such as: physical properties, phase behaviour and calculations. Part three through five is dedicated to topics such as: separator construction, factors affecting separation, vessel operation, and separator operation considerations. Part six is devoted to the ASME codes governing wall thickness determination of vessel weight fabrication, inspection, alteration and repair of separators500 illustrationsEasy to understand calculations methodsGuide for protecting downstream equipmentHelps reduce the loss of expensive intermediate endsHelps increase product purity
Crossing the Rubicon is unique not only for its case-breaking examination of 9/11, but for the breadth and depth of its world picture—an interdisciplinary analysis of petroleum, geopolitics, narcotraffic, intelligence and militarism—without which 9/11 cannot be understood.
The US manufacturing sector has been mostly replaced by speculation on financial data whose underlying economic reality is a dark secret. Hundreds of billions of dollars in laundered drug money flow through Wall Street each year from opium and coca fields maintained by CIA-sponsored warlords and US-backed covert paramilitary violence. America’s global dominance depends on a continually turning mill of guns, drugs, oil and money. Oil and natural gas—the fuels that make economic growth possible—are subsidized by American military force and foreign lending.
In reality, 9/11 and the resulting “war on terror” are parts of a massive authoritarian response to an emerging economic crisis of unprecedented scale. Peak Oil—the beginning of the end for our industrial civilization—is driving the élites of American power to implement unthinkably draconian measures of repression, warfare and population control. Crossing the Rubicon is more than a story. It is a map of the perilous terrain through which, together and alone, we are all now making our way.
The book's extensive coverage of the subject should be of special interest to reservoir geologists and engineers, production engineers and technologists, and well log analysts.
Standard Handbook of Petroleum and Natural Gas Engineering, Third Edition,provides you with the best, state-of-the-art coverage for every aspect of petroleum and natural gas engineering. With thousands of illustrations and 1,600 information-packed pages, this handbook is a handy and valuable reference. Written by dozens of leading industry experts and academics, the book provides the best, most comprehensive source of petroleum engineering information available. Now in an easy-to-use single volume format, this classic is one of the true "must haves" in any petroleum or natural gas engineer's library. A classic for over 65 years, this book is the most comprehensive source for the newest developments, advances, and procedures in the oil and gas industry. New to this edition are materials covering everything from drilling and production to the economics of the oil patch. Updated sections include: underbalanced drilling; integrated reservoir management; and environmental health and safety. The sections on natural gas have been updated with new sections on natural gas liquefaction processing, natural gas distribution, and transport. Additionally there are updated and new sections on offshore equipment and operations, subsea connection systems, production control systems, and subsea control systems. Standard Handbook of Petroleum and Natural Gas Engineering, Third Edition, is a one-stop training tool for any new petroleum engineer or veteran looking for a daily practical reference.Presents new and updated sections in drilling and productionCovers all calculations, tables, and equations for every day petroleum engineersFeatures new sections on today's unconventional resources and reservoirs
* Covers the technologies and operations of petroleum refineries
* Provides material on operating a jointly owned and operated refinery
* Gives readers a comprehensive introduction to petroleum refining, as well as a full reference to engineers in the field
· New in-depth coverage of hydrocarbon characteristics, the different kinds of reservoirs, and impurities in crude.
· Practical suggestions help readers understand the art and science of handling produced liquids.
· Numerous, easy-to-read figures, charts, tables, and photos clearly explain how to design, specify, and operate oilfield surface production facilities.
With their timely new book, authors Andrew Inkpen and Michael H. Moffett have written a nontechnical book to help readers with technical backgrounds better understand the business of oil and gas. They describe and analyze the global oil and gas industry, focusing on its strategic, financial, and business aspects and addressing a wide range of topics organized around the oil and gas industry value chain, starting with exploration and ending with products sold to consumers.
The Global Oil & Gas Industry is a single source for anyone interested in how the business of the worldís largest industry actually works: business executives, students, government officials and regulators, professionals working in the industry, and the general public.
Key features include;
Common examples that will enable engineers to achieve increased unit savings
Updated with the latest process technologies for handling residue and "deep" hydrotreated feedstock
New chapter discussing refractory lining, providing an introduction to the different refractories employed in FCC units, examples of various refractory linings and associated anchors, installation techniques as well as some guidelines for proper drying and curing refractory lining.
New troubleshooting chapter, increasing the practical application of the book, along with new visual references to operation optimization
About the author;
Reza Sadeghbeigi is President of RMS Engineering, Inc. a Houston, Texas based engineering firm providing high‐level technical expertise in the area of fluid catalytic cracking (FCC) and related processes.
Reza has 35 years of hands-on FCC experience in the refining industry, focusing on technical services, troubleshooting, process design, and project management, including major FCC revamps. A licensed Professional Engineer (P.E.) in Texas and Louisiana, Reza has published technical papers and produced industry seminars on refining and catalytic cracking operations and conducted numerous client customized FCC training courses and public seminars.
The only practical approach, with tools and techniques for those with FCC responsibilities to help maximize the profitability and reliability of fluid catalytic cracking operations.
Updated throughout, with new material focusing on latest developments, the shift to using FCC to process lower quality crudes, and new applied material on troubleshooting.
Provides a reference for both experienced engineers who need a quick reference, as well as providing those who are developing their skills and knowledge with access to trusted information that will help them succeed in their projects.
This must-have handbook includes:A focus on real-world essentials rather than theoryIllustrative examples throughout the textWorking spreadsheet programs for all the engineering calculations on a free and easy to use companion siteExercise problems at the end of every chapter, including newly added questions utilizing the spreadsheet programsExpanded sections covering today’s technologies, such as multi-fractured horizontal wells and shale gas wells
This new book introduces different types of geophysical logs and subsurface maps that can be generated from basic well data, and subsurface problems that can be solved using geophysical logs and subsurface maps. "Hands-on" exercises reveal how each map type is generated and what applications they may have. Exercises at the end of each chapter introduce different types of wells and lithologies.
The book is written for industry professionals who wish to be better informed about the basic technical and commercial methods, concepts and techniques used in the upstream oil and gas business. The authors are the founders of TRACS International, a company which has provided training and consultancy in Exploration and Production related issues for many clients world-wide since 1992.Clearly written in a concise and straightforward mannerFeatures detailed technical illustrations to maximize learningPresents major advances in the industry, including technical methods for field evaluation and development and techniques used for managing risk within the businessDeveloped from TRACS International course materials, discussions with clients, and material available in the public domain
Completely revised and updated throughout, this new edition of a GPP industry standard has completely new sections on coalbed methane, CO2 sequestration (important for environmental concerns), Co2 Flood, more sophisticated petrophysical models for geoscientists, examples of subsidence, additional geomechanical calculations, and much more. What makes this book so different and valuable to the engineer is the accompanying software, used by reservoir engineers all over the world every day. The new software, IFLO (replacing WINB4D, in previous editions), is a simulator that the engineer can easily install in a Windows operating environment. IFLO generates simulations of how the well can be tapped and feeds this to the engineer in dynamic 3D perspective. This completely new software is much more functional, with better graphics and more scenarios from which the engineer can generate simulations.
This book and software helps the reservoir engineer do his or her job on a daily basis, better, more economically, and more efficiently. Without simulations, the reservoir engineer would not be able to do his or her job at all, and the technology available in this product is far superior to most companies’ internal simulation software. It is also much less expensive ($89.95 versus hundreds or even thousands of dollars) than off-the-shelf packages available from independent software companies servicing the oil and gas industry. It is, however, just as, or more accurate than these overpriced competitors, having been created by a high-profile industry expert and having been used by engineers in the real world with successful and profitable results.This reference is THE industry standard to successfuly modelling reservoirs, obtaining maximum supply and profiting from oil and gas reservoirsIncludes dowloadable software of the new IFLO reservoir simulation software, that can save your company thousands of dollarsThis edition has been updated to included new sections on environmentally important issues such as CO2 sequestration, coalbed methane, CO2 FloodThe third edition also provides more sophisticated petrophysical models, examples of subsidence and additional geomechanical calculations
Elements of Petroleum Geology begins with an account of the physical and chemical properties of petroleum, reviewing methods of petroleum exploration and production. These methods include drilling, geophysical exploration techniques, wireline logging, and subsurface geological mapping. After describing the temperatures and pressures of the subsurface environment and the hydrodynamics of connate fluids, Selley examines the generation and migration of petroleum, reservoir rocks and trapping mechanisms, and the habit of petroleum in sedimentary basins. The book contains an account of the composition and formation of tar sands and oil shales, and concludes with a brief review of prospect risk analysis, reserve estimation, and other economic topics.Updates the Second Edition completelyReviews the concepts and methodology of petroleum exploration and productionWritten by a preeminent petroleum geologist and sedimentologist with decades of petroleum exploration in remote corners of the worldContains information pertinent to geophysicists, geologists, and petroleum reservoir engineersUpdated statistics throughoutAdditional figures to illustrate key points and new developmentsNew information on drilling activity and production methods including crude oil, directional drilling, thermal techniques, and gas playsAdded coverage of 3D seismic interpretationNew section on pressure compartmentsNew section on hydrocarbon adsorption and absorption in source rocksCoverage of The Orinoco Heavy Oil Belt of VenezuelaUpdated chapter on unconventional petroleum
It covers the fundamental reservoir engineering principles involved in the analysis of fluid flow through fractured reservoirs, the application of existing models to field cases, and the evaluation and description of reservoirs, based on processed data from pressure and production tests. The author also discusses production decline analysis, the understanding of which is a key factor influencing completion or abandonment of a well or even a field.
The theoretical concepts are presented as clearly and simply as possible in order to aid comprehension. The book is thus suitable for training and educational purposes, and will help the reader who is unfamiliar with the subject acquire the necessary skills for successful interpretation and analysis of field data.
One of the most important features of the book is that it fills the gap between field operations and research, in regard to proper management of reservoirs. The book also contains a computer program (FORTRAN language) which can be incorporated in existing software designed for reservoir evaluation; type curves generation, test design and interpretation, can be achieved by using this program.
Petroleum engineers, reservoir engineers, petroleum geologists, research engineers and students in these fields, will be interested in this book as a reference source. It can also be used as a text book for training production and reservoir engineering professionals. It should be available in university and oil company libraries.
The problems of abnormally high formation pressures encountered in the subsurface while drilling for petroleum are very diverse, involving geologists, geophysicists, reservoir engineers, drilling engineers, and borehole logging engineers. The acute anticipation of such pressures before drilling has become possible with modern technology. This book treats these developments and covers the following topics: world occurrences, the geology of abnormal pore pressures and the background theory, reservoir engineering aspects of abnormally pressured reservoirs, detection of abnormal pressures by geophysical methods before drilling and during drilling, and their evaluation after drilling. It examines the special problems of shallow hazards from shallow abnormal pressures, and relief-well engineering to control blowouts. It also examines the generation of abnormal pressures from hydrocarbon generation in the Rocky Mountains, and the distribution of abnormal pressures in south Louisiana, USA. The topics are examined from a practical point of view with a theoretical background. There is a glossary of terms, and a relevant practical conversion table. Both SI units and the conventional US oil industry units are used.
*New chapter on new combustion concepts and technologies, including discussion on nanotechnology as related to combustion, as well as microgravity combustion, microcombustion, and catalytic combustion—all interrelated and discussed by considering scaling issues (e.g., length and time scales).
*New information on sensitivity analysis of reaction mechanisms and generation and application of reduced mechanisms
*Expanded coverage of turbulent reactive flows to better illustrate real-world applications
*Important new sections on stabilization of diffusion flames. For the first time, the concept of triple flames will be introduced and discussed in the context of diffusion flame stabilization
Wind Power Basics provides a clear understanding of wind and wind energy systems, including turbines, towers, inverters and batteries, site assessment, installation, and maintenance requirements.
Whether you’re considering your own small-scale wind energy system or just want a straightforward, detailed introduction to the benefits and challenges of this rapidly emerging technology, Wind Power Basics is the guide you need.
Dan Chiras is a respected educator and an internationally acclaimed author who has published more than twenty-five books on residential renewable energy and green building, including Power From the Wind.
Inside you'll find: * A new chapter on asset retirement obligations and asset impairment * An added section on project analysis and investment decision making * Updated coverage of asset exchanges and fair value reporting requirements * Thorough discussion of oil and gas pricing and marketing arrangements * Updated examples and homework problems
The papers in this volume provide a valuable and extremely wide-ranging overview of current research into the various options for natural gas conversion, giving a detailed description of the gas-to-gasoline process and plant. Together, they represent a unique combination of fundamental surface chemistry catalyst characterization, reaction chemistry and engineering scale-up and commercialization.
Dry gas seals are in used in compressor stations, processing plants, refineries, chemical plants, and more. This book is perfectly suited for:
The information found in Dry Gas Seals Handbook will help you make informed decisions regarding the application, operation, and maintenance of dry gas seals. This book presents a complete guide to the technology, from the principle of gas seal operation to "lessons learned" from actual field experience.
Key features & benefits:
• More than 50 figures to illustrate explanations
• Seven case studies break down common problems associated with dry gas seals, corrective actions, and lessons learned
• Appendices provide typical examples of dry gas seal test reports and dry gas seal and barrier seal selection guidelines
• Glossary of common terms related to dry gas seal technology