Two Phase Flow In Coalbeds

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Two Phase Flow In Coalbeds

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Author : Fred N. Kissell
language : en
Publisher:
Release Date : 1975

Two Phase Flow In Coalbeds written by Fred N. Kissell and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1975 with Methane categories.

Two Phase Flow In Coalbeds

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Author : Fred N. Kissell
language : en
Publisher:
Release Date : 1975

Two Phase Flow In Coalbeds written by Fred N. Kissell and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1975 with Methane categories.

Two Phase Flow In Coalbeds

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Author : Fred N. Kissell
language : en
Publisher:
Release Date : 1975

Two Phase Flow In Coalbeds written by Fred N. Kissell and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1975 with Methane categories.

A Fully Coupled Finite Element Model Of Coal Deformation And Two Phase Flow For Coalbed Methane Extraction

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Author : Dong Chen
language : en
Publisher:
Release Date : 2012

A Fully Coupled Finite Element Model Of Coal Deformation And Two Phase Flow For Coalbed Methane Extraction written by Dong Chen and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with Coalbed methane categories.

A reservoir simulation model is usually required to represent the combined effects of gas transport, water flow, and coal swelling/shrinking on the extraction of coalbed methane (CBM). Although a number of models have been developed in recent years, most of them are based on coal permeability models under the assumptions of uniaxial strain and constant overburden load. Under these assumptions, coal permeability is defined as a function of pore pressure only. This allows the gas transport and water flow to be decoupled from coal deformation. In this study, these two assumptions are relaxed: a general porosity and effective permeability model is developed to represent the behavior of both the primary medium (coal matrix) and the secondary medium (fractures) under conditions of variable stress. The effective permeability model is defined as a function of effective stress, and can be applied to the full spectrum of mechanical conditions spanning prescribed in-situ stresses through constrained displacement. Moreover the effect of matrix moisture is often ignored in previous simulation studies, but some experimental results showed that the presence of moisture in the coal matrix had profound influences on the gas storage and transport in coal seams by reducing the gas adsorption capacity of the coal, decreasing the gas effective diffusivity through the coal matrix, and varying the coal swelling strain. In order to investigate the magnitude and interplay the moisture effects on CBM production, approximate relationships have been built to quantify the moisture effect on the gas adsorption capacity, the gas effective diffusivity and the coal swelling strain. These relationships have been calibrated by comparison with a selection of literature data. Both the permeability model and the moisture effect correlations are implemented into a fully coupled model of coal deformation, gas transport in the matrix system, and gas-water flow in the fracture system. The FE model has been verified through the history matching of the gas and water production profiles in the Powder River Basin. The verified FE model is applied to conduct a series of parametric studies. These parametric studies illustrate important non-linear responses due to the effective stress that cannot be recovered where mechanical influences are not rigorously coupled with the two-phase flow system.

Two Phase Flow In A Coal Pulverizer

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Author : Iordanis Demetrios Notaras
language : en
Publisher:
Release Date : 1983

Two Phase Flow In A Coal Pulverizer written by Iordanis Demetrios Notaras and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983 with Coal, Pulverized categories.

Dynamic Well Testing In Petroleum Exploration And Development

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Author : Huinong Zhuang
language : en
Publisher: Elsevier
Release Date : 2020-05-26

Dynamic Well Testing In Petroleum Exploration And Development written by Huinong Zhuang and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-05-26 with Technology & Engineering categories.

Dynamic Well Testing in Petroleum Exploration and Development, Second Edition, describes the process of obtaining information about a reservoir through examining and analyzing the pressure-transient response caused by a change in production rate. The book provides the reader with modern petroleum exploration and well testing interpretation methods, including their basic theory and graph analysis. It emphasizes their applications to tested wells and reservoirs during the whole process of exploration and development under special geological and development conditions in oil and gas fields, taking reservoir research and performance analysis to a new level. This distinctive approach features extensive analysis and application of many pressure data plots acquired from well testing in China through advanced interpretation software that can be tailored to specific reservoir environments. Presents the latest research results of conventional and unconventional gas field dynamic well testing Focuses on advances in gas field dynamic well testing, including well testing techniques, well test interpretation models and theoretical developments Includes more than 100 case studies and 250 illustrations-many in full color-that aid in the retention of key concepts

Detection And Delineation Of Faults By Surface Resistivity Measurements

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Author : D. G. Kuehn
language : en
Publisher:
Release Date : 1975

Detection And Delineation Of Faults By Surface Resistivity Measurements written by D. G. Kuehn and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1975 with Blasting categories.

Report Of Investigations

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Author :
language : en
Publisher:
Release Date : 1919

Report Of Investigations written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1919 with Mineral industries categories.

Bulletin

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Author :
language : en
Publisher:
Release Date : 1985

Bulletin written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985 with Mines and mineral resources categories.

Coal And Coalbed Gas

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Author : Romeo M. Flores
language : en
Publisher: Elsevier
Release Date : 2024-01-24

Coal And Coalbed Gas written by Romeo M. Flores and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024-01-24 with Science categories.

Coal and Coalbed Gas: Future Directions and Opportunities, Second Edition introduces the latest in coal geology research and the engineering of gas extraction. Importantly, the second edition examines how, over the last 10 years, research has both changed focus and where it is conducted. This shift essentially depicts "a tale of two worlds"—one half (Western Europe, North America) moving away from coal and coalbed gas research and production towards cleaner energy resources, and the other half (Asia–Pacific region, Eastern Europe, South America) increasing both research and usage of coal. These changes are marked by a precipitous fall in coalbed gas production in North America; however, at the same time there has been a significant rise in coal and coalbed gas production in Australia, China, and India. The driver for higher production and its associated research is a quest for affordable energy and economic security that a large resource base brings to any country like Australia’s first large-scale coalbed gas to liquid natural gas projects supplying the demand for cleaner burning LNG to the Asian-Pacific region. Since the last edition of this book, global climate change policies have more forcibly emphasized the impact of methane from coal mines and placed these emissions equal to, or even more harmful than, CO2 emissions from fossil fuels in general. Governmental policies have prioritized capture, use, and storage of CO2, burning coal in new highly efficient low emission power plants, and gas pre-drainage of coal mines. The Organization for Economic Cooperation and Development (OECD) countries and China are also introducing new research into alternative, non-fuel uses for coal, such as carbon fibers, nanocarbons, graphene, soil amendments, and as an unconventional ore for critical elements. New to this edition: Each chapter is substantially changed from the 1st edition including expanded and new literature citations and reviews, important new data and information, new features and materials, as well as re-organized and re-designed themes. Importantly, three new chapters cover global coal endowment and gas potential, groundwater systems related to coalbed gas production and biogenic gas generation as well as the changing landscape of coal and coalbed gas influenced by global climate change and net-zero carbon greenhouse gas emissions. FOREWORD When I reviewed the first edition of this book, my initial thought was, "Do we need another book on coal geology?" and then I read it and realised, "Yes, we need this book" and my students downloaded copies as soon as it was available. So now we come to 2023, and a lot has happened in the past decade. For a different reason we might ask if we still need this book, or even coal geoscientists and engineers, as the world aims for rapid decarbonisation of the energy sector and a reduction of coal as a feedstock for industrial resources, like steel manufacture.