Author:
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Category :
Languages : en
Pages :
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Book Description
The one-dimensional transient two phase flow in a geothermal well has been modeled with a finite difference approximation. The equations of mass, momentum and energy are solved using a partially implicit method. Terms that would place a severe time restriction on the calculation are solved implicitly while other terms are solved explicitly for computational ease and efficiency. The wellbore model includes heat and mass transfer and is coupled to a simple reservoir model. It is used to investigate the transient behavior in a single or two phase well during well testing. Results show that when the reservoir has a relatively large value of kh, as exists in a geothermal field, the slope of the log (pressure) vs. log (time) curve is not necessarily a unit slope. The early time behavior of this curve is controlled by the interaction of the flow in the reservoir and that in the well, and can be used to determine near bore values of kh. Heat loss in the wellbore is shown to also affect the pressure vs. time plot.
Author: Xinli Lu
Publisher:
ISBN:
Category : Geysers
Languages : en
Pages : 254
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Author: Stephen Jarvis
Publisher:
ISBN:
Category : Pipe
Languages : en
Pages : 64
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Book Description
A model of transient two-phase flow in a pipe is constructed in Eulerian coordinates assuming a single velocity but independent temperatures in the two phases.Experiments on the numerical integration of the system for Cooldown problem by both Lax and Courant-Isaacson-Rees methods indicate that a very fine spatial difference * net must be used to compensate for the numerical diffusion essential to computational stability if a second surge is to be realized. (Author).
Author:
Publisher:
ISBN:
Category : Geothermal engineering
Languages : en
Pages : 668
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Author:
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ISBN:
Category : Power resources
Languages : en
Pages : 464
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Author: Herbert Staedtke
Publisher: John Wiley & Sons
ISBN: 3527609113
Category : Science
Languages : en
Pages : 288
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Book Description
Here, the author, a researcher of outstanding experience in this field, summarizes and combines the recent results and findings on advanced two-phase flow modeling and numerical methods otherwise dispersed in various journals, while also providing explanations for numerical and modeling techniques previously not covered by other books. The resulting systematic and comprehensive monograph is unrivalled in its kind, serving as a reference for both researchers and engineers working in engineering as well as in environmental science.
Author: Myles Wilson Scoggins
Publisher:
ISBN:
Category : Petroleum engineering
Languages : en
Pages : 268
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Author: Sadiq J. Zarrouk
Publisher: Academic Press
ISBN: 0128149477
Category : Science
Languages : en
Pages : 366
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Book Description
Geothermal Well Test Analysis: Fundamentals, Applications and Advanced Techniques provides a comprehensive review of the geothermal pressure transient analysis methodology and its similarities and differences with petroleum and groundwater well test analysis. Also discussed are the different tests undertaken in geothermal wells during completion testing, output/production testing, and the interpretation of data. In addition, the book focuses on pressure transient analysis by numerical simulation and inverse methods, also covering the familiar pressure derivative plot. Finally, non-standard geothermal pressure transient behaviors are analyzed and interpreted by numerical techniques for cases beyond the limit of existing analytical techniques. Provides a guide on the analysis of well test data in geothermal wells, including pressure transient analysis, completion testing and output testing Presents practical information on how to avoid common issues with data collection in geothermal wells Uses SI units, converting existing equations and models found in literature to this unit system instead of oilfield units
Author: Jochen Bundschuh
Publisher: CRC Press
ISBN: 0203848101
Category : Mathematics
Languages : en
Pages : 522
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Book Description
This book provides an introduction to the scientific fundamentals of groundwater and geothermal systems. In a simple and didactic manner the different water and energy problems existing in deformable porous rocks are explained as well as the corresponding theories and the mathematical and numerical tools that lead to modeling and solving them. This
Author: Myles Wilson Scoggings (Jr.)
Publisher:
ISBN:
Category :
Languages : en
Pages : 268
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Book Description
