Temperature Transient Analysis in Naturally Fractured Reservoirs PDF Download
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Author: Jose Eduardo Ramirez Lopez Miro
Publisher:
ISBN:
Category :
Languages : en
Pages : 94
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Book Description
Author: Jose Eduardo Ramirez Lopez Miro
Publisher:
ISBN:
Category :
Languages : en
Pages : 94
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Author: Babatunde Tolulope Ajayi
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Well pressure transient analysis is widely used in reservoir management to obtain reservoir information needed for reservoir simulation, damage identification, well optimization and stimulation evaluation. The main objective of this project is to analyze, interpret and categorize the pressure transient responses obtained from 22 wells in a vuggy naturally fractured carbonate reservoir in an attempt to understand the heterogeneities of the porosity system. Different modeling techniques useful in simulating well behavior in vuggy naturally fractured reservoirs were developed and categorized. The research focused on pressure transient analysis using homogeneous, radial composite, single fracture, dual porosity and triple porosity reservoir models along with conventional boundary models which show boundary limits including single and double sealing boundary, closure and constant pressure boundary. A triple porosity model was developed, and it proved to be very effective for use in the analysis of the pressure responses obtained from this field. For some wells, the need for new models to characterize the pressure responses in more complex reservoirs was highlighted as conventional models failed.
Author: Roberto Aguilera
Publisher: PennWell Books
ISBN:
Category : Science
Languages : en
Pages : 730
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Book Description
This book deals exclusively with naturally fractured reservoirs and includes many subjects usually treated in separate volumes. A highly practical edition, Naturally Fractured Reservoirs is written for students, reservoir geologists, log analysts and petroleum engineers.
Author: Priscila Magalhães Ribeiro
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Recent developments in bottomhole data acquisition techniques, such as distributed temperature sensing systems (DTS), have brought attention to the potential increase of information that can be obtained from temperature data. Studies have shown the application of temperature surveys to estimate flowrate profiles, resolve the kind of damage around the well, and improve the robustness of the history matching, among others. Nonetheless, Temperature Transient Analysis (TTA) is not a mature technique and its capabilities have not been explored fully yet. In order to investigate the application temperature analysis to the hydraulic fracturing problem, in addition to pressure analysis, a numerical model was developed to calculate pressure and temperature responses. Regarding the fracture and reservoir fluid flow, a general approach can be adopted, where the formation permeability and fracture characteristics dictate how the fluids flow during and after fracture growth. We developed a comprehensive model, which accounts for the pressure effect on the temperature response, as well as a dynamic fracture that grows and eventually is allowed to close during falloff. In this work we analyzed the temperature and pressure responses during and immediately after hydraulic fracturing in order to improve our knowledge of this complicated physical problem. Based on this study, we can better understand not only the fracture properties, but also the reservoir itself. In addition, sensitivity analysis shows how reservoir permeability can impact final fracturing performance, as well as pressure and temperature responses. The developed model was also applied to simulate minifrac analysis, and a field example is presented that shows a good agreement with the simulated behavior during fracture closure. One of the main contributions of this research is related to the creation of multiple fractures along a horizontal well. This type of well and completion technique have become the key factors for success in development of unconventional resources. Both sequential and simultaneous fracture growth was studied. The presence of reservoir permeability heterogeneity was investigated and the capability of temperature data to identify the existence of such reservoir structure was explored. Capabilities and limitations of information carried by temperature data are presented through different geometry analyses. Also related to horizontal multifractured wells, a case was considered in which one of the fractures interconnects different zones vertically. This study is motivated by microseismic evidence of activity captured out of the target reservoir location. The temperature data analysis during the beginning of production life of the well was shown to be very effective to identify the existence of such interconnection. The difference in temperature due to geothermal gradient allows a very clear temperature signature, where the pressure analysis would not reveal the connection.
Author:
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Category : Fossil fuels
Languages : en
Pages : 806
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Author: Clarkson C.R.
Publisher: Gulf Professional Publishing
ISBN: 0323901174
Category : Science
Languages : en
Pages : 1144
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Book Description
Unconventional Reservoir Rate-Transient Analysis provides petroleum engineers and geoscientists with the first comprehensive review of rate-transient analysis (RTA) methods as applied to unconventional reservoirs. Volume One—Fundamentals, Analysis Methods, and Workflow is comprised of five chapters which address key concepts and analysis methods used in RTA. This volume overviews the fundamentals of RTA, as applied to low-permeability oil and gas reservoirs exhibiting simple reservoir and fluid characteristics. Volume Two—Application to Complex Reservoirs, Exploration and Development is comprised of four chapters that demonstrate how RTA can be applied to coalbed methane reservoirs, shale gas reservoirs, and low-permeability/shale reservoirs exhibiting complex behavior such as multiphase flow. Use of RTA to assist exploration and development programs in unconventional reservoirs is also demonstrated. This book will serve as a critical guide for students, academics, and industry professionals interested in applying RTA methods to unconventional reservoirs. Gain a comprehensive review of key concepts and analysis methods used in modern rate-transient analysis (RTA) as applied to low-permeability ("tight") oil and gas reservoirs Improve your RTA methods by providing reservoir/hydraulic fracture properties and hydrocarbon-in-place estimates for unconventional gas and light oil reservoirs exhibiting complex reservoir behaviors Understand the provision of a workflow for confident application of RTA to unconventional reservoirs
Author:
Publisher:
ISBN:
Category : Earth temperature
Languages : en
Pages : 238
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Author: Hugo Araujo N.
Publisher:
ISBN:
Category : Carbonate reservoirs
Languages : en
Pages : 656
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Author:
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ISBN:
Category :
Languages : en
Pages :
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Disposal of hot separated brine by means of reinjection within the limits of the geothermal reservoir is, at present, a problem that remains to be solved. Possible thermal, as well as chemical contamination of the resources present key questions that have to be appropiately answered before a reinjection project is actually implemented in the field. This paper focusses on the basic heat-transfer process that takes place when a relatively cold brine is injected back into the naturally fractured hot geothermal reservoir after steam has been separated at the surface. The mathematical description of this process considers that rock matrix blocks behaves as uniformly distributed heat sources, meanwhile heat transfer between matrix blocks and the fluid contained in the fractures takes place under pseudo-steady state conditions with the main temperature drop occurring in the rock-matrix blocks interphase. Analytical solutions describing the thermal front speed of propagation are presented. Discussion on the effect of several variables affecting the thermal front speed of propagation is included, stressing the importance that a proper "in-situ" determination of the effective heat transfer area at the rock-fluid interphase has on the whole process. Solutions are also presented as a type-curve that can be practically used to estimate useful parameters involved in heat transfer phenomena during cold fluid reinjection in naturally fractured geothermal systems.
Author:
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ISBN:
Category : Power resources
Languages : en
Pages : 906
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Book Description
Semiannual, with semiannual and annual indexes. References to all scientific and technical literature coming from DOE, its laboratories, energy centers, and contractors. Includes all works deriving from DOE, other related government-sponsored information, and foreign nonnuclear information. Arranged under 39 categories, e.g., Biomedical sciences, basic studies; Biomedical sciences, applied studies; Health and safety; and Fusion energy. Entry gives bibliographical information and abstract. Corporate, author, subject, report number indexes.
