An Experimental Study of Gas-gas Dispersion in Consolidated Porous Media to Characterize Reservoir Rocks PDF Download
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Author: Wei Wang
Publisher:
ISBN:
Category : Gas reservoirs
Languages : en
Pages : 258
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Book Description
Author: Wei Wang
Publisher:
ISBN:
Category : Gas reservoirs
Languages : en
Pages : 258
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Book Description
![Dispersion Measurement as a Method of Quantifying Geologic Characterization and Defining Reservoir Heterogeneity. [Quarterly] Report, July 12, 1993--October 12, 1993 PDF](https://books.google.com/books/content/images/frontcover/4VrzjwEACAAJ?fife=w80-h100)
Author:
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ISBN:
Category :
Languages : en
Pages : 5
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Book Description
Dispersion of fluids flowing through porous media is an important phenomenon in miscible displacement. Much of the research involving dispersion and dispersivity as a property of reservoir rock has focused on miscible liquid-liquid displacement processes. This study addresses the measurement of dispersion in a gas-gas displacement system. The objectives of this study are: (1) to develop a method and set up an experimental apparatus to measure gas-gas dispersion in consolidated rocks.(2) to study the effect of displacement velocity and pressure on gas-gas dispersion and dispersivity; and (3) to study the heterogeneity of reservoir rocks and investigate the relationship between dispersivity and rock properties to characterize the flow system using gas-gas dispersion measurements. New experimental methods and apparatus for gas-gas dispersion were developed in this study. Twenty eight gas-gas miscible displacement measurements under different flowrates and pressures were conducted on three Berea sandstone cores of varying lengths and physical properties. A gas chromatograph was utilized and modified to measure the concentration of gas at the outlet of the cores. Nitrogen was used as the displacing gas, while helium was used as the displaced gas. The experimental results were illustrated using S-shaped effluent breakthrough curves. The effect of flowrate and pressure on gas-gas dispersion, dispersion coefficient, dispersivity, and dispersion factor were determined from these curves. Gas effective diffusion coefficients were obtained by graphical methods using the dispersion coefficients under low velocities. The heterogeneity of reservoir rock can be studied by this method.
Author: Wade H. Shafer
Publisher: Springer Science & Business Media
ISBN: 1461303931
Category : Science
Languages : en
Pages : 427
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Book Description
Masters Theses in the Pure and Applied Sciences was first conceived, published, and disseminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS)* at Purdue University in 1957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dis semination phases of the activity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all concerned if the printing and distribution of the volumes were handled by an international publishing house to assure improved service and broader dissemination. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Corporation of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 39 (thesis year 1994) a total of 13,953 thesis titles from 21 Canadian and 159 United States universities. We are sure that this broader base for these titles reported will greatly enhance the value of this impor tant annual reference work. While Volume 39 reports theses submitted in 1994, on occasion, certain uni versities do report theses submitted in previous years but not reported at the time.
Author: Guancheng Jiang
Publisher: Gulf Professional Publishing
ISBN: 012815151X
Category : Technology & Engineering
Languages : en
Pages : 283
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Book Description
Gas Wettability of Reservoir Rock Surfaces with Porous Media compiles critical information on this complex topic, thus helping engineers more successfully face technical field challenges in oil and gas recovery. Combining both theoretical and practical knowledge, this concise reference bridges basic concepts with factors affecting gas wettability, also covering polymer-type gas wetting reversal agents in technical detail and discussing gas wettability's influence on capillary force, oil-water distribution, and gas wettability's application in petroleum engineering operations from both domestic and international projects. This book delivers the critical concepts, methods, mechanisms and practical technology needed for today's complex oil and gas assets. - Helps readers further develop and improve basic theory on petrophysics and reservoir engineering - Covers various aspects, like the developmental history of gas wettability and the concept and evaluation of gas wettability of oil and gas reservoir rock surfaces - Creates a bridge between theoretical knowledge and practical application, with content covering new theories, methodologies and the technologies used in drilling, completion and reservoir engineering
Author:
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Category :
Languages : en
Pages : 55
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Category : Power resources
Languages : en
Pages : 438
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Author: W. Emmett Bolch
Publisher:
ISBN:
Category : Gas dynamics
Languages : en
Pages : 140
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Author:
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Category : Petroleum
Languages : en
Pages : 616
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
This study developed a new method using dispersion measurements by which the flow characterization in a porous medium or reservoir can be determined. The fundamentals of the dispersion characteristic in consolidated porous media were investigated and employed to evaluate the reservoir characterization. A series of miscible displacement tests were conducted on Berea and Brown sandstones with different permeabilities, system lengths, and heterogeneity. The analytical methodologies, (1) X-ray computed tomograph (CT) method, (2) X-ray linear core scanning method, and (3) refractive index method, were utilized for dispersion measurements. The laboratory techniques developed in this study and the detailed experimental procedures are presented. The experimental results were analyzed by utilizing the concentration profiles obtained from experimental dispersion tests. The results have shown that the concentration profile appears to be a strong function of rock permeability and heterogeneity and that the dispersivity is a length dependent variable. The results show there exists a critical length in a dispersion measurement. A new parameter is defined and referred to as the dispersion factor. Both the laboratory dispersion factors and the field dispersion factors have been determined and discussed. The study concludes the dispersion factor can be used to evaluate the flow characterization of a miscible displacement, and that a dispersion factor measured in a field test is more representative of a given reservoir than dispersion factors measured in the laboratory. A large dispersion factor corresponds to miscible fluids flowing through a heterogeneous rock or reservoir, and a small dispersion factor corresponds to miscible fluids flowing through a homogeneous rock or reservoir.
Author: Clifford K. Ho
Publisher: Springer Science & Business Media
ISBN: 140203962X
Category : Science
Languages : en
Pages : 442
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Book Description
CLIFFORD K. HOAND STEPHEN W. WEBB Sandia National Laboratories, P. O. Box 5800, Albuquerque, NM 87185, USA Gas and vapor transport in porous media occur in a number of important applications includingdryingofindustrialandfoodproducts,oilandgasexploration,environm- tal remediation of contaminated sites, and carbon sequestration. Understanding the fundamental mechanisms and processes of gas and vapor transport in porous media allows models to be used to evaluate and optimize the performance and design of these systems. In this book, gas and vapor are distinguished by their available states at stan- ? dard temperature and pressure (20 C, 101 kPa). If the gas-phase constituent can also exist as a liquid phase at standard temperature and pressure (e. g. , water, ethanol, toluene, trichlorothylene), it is considered a vapor. If the gas-phase constituent is non-condensable at standard temperature and pressure (e. g. , oxygen, carbon di- ide, helium, hydrogen, propane), it is considered a gas. The distinction is important because different processes affect the transport and behavior of gases and vapors in porous media. For example, mechanisms specific to vapors include vapor-pressure lowering and enhanced vapor diffusion, which are caused by the presence of a g- phase constituent interacting with its liquid phase in an unsaturated porous media. In addition, the “heat-pipe” exploits isothermal latent heat exchange during evaporation and condensation to effectively transfer heat in designed and natural systems.
