[PDF] Pressure Transient Test Analysis Of Vuggy Naturally Fractured Carbonate Reservoir eBook

Author : Babatunde Tolulope Ajayi
Publisher :
Page : pages
File Size : 21,9 MB
Release : 2010
Category :
ISBN :

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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 : Hedong Sun
Publisher : Gulf Professional Publishing
Page : 368 pages
File Size : 25,16 MB
Release : 2019-04-15
Category : Science
ISBN : 0128183241

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Thanks to technology, fractured carbonate gas reservoirs are becoming more discoverable, but because these assets are more complex and diverse, there is a high level of difficulty in understanding how to plan design and performance analysis. Dynamic Description Technology of Fractured Vuggy Gas Reservoirs delivers a critical reference to reservoir and production engineers on all the basic characteristics of fractured vuggy gas reservoirs and combines both static and dynamic data to improve the reservoir characterization accuracy and development. Based on the full life cycle of well testing and advanced production decline analysis, this reference also details how to apply reservoir dynamic evaluation, reserve estimation, and performance forecasting. Offering one collective location for the latest research on fractured gas reservoirs, the reference also covers: Physical models, analysis examples, and processes 3D numerical well test analysis technology Deconvolution technology of production decline analysis Packed with many calculation examples and more than 100 case studies, Dynamic Description Technology of Fractured Vuggy Gas Reservoirs gives engineers a strong tool to further exploit these complex assets. Gain advanced knowledge in well test and production decline analysis as well as performance forecasting specific to fractured vuggy carbonate gas reservoirs Understand the characteristics, advantages, disadvantages, and current limitations in technology of fractured vuggy carbonate gas reservoirs Bridge from theory to practice by combining static and dynamic data to form more accurate real-world analysis and modelling

Author : S.J. Mazzullo
Publisher : Elsevier
Page : 1011 pages
File Size : 43,37 MB
Release : 1996-11-22
Category : Technology & Engineering
ISBN : 0080528562

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This second volume on carbonate reservoirs completes the two-volume treatise on this important topic for petroleum engineers and geologists. Together, the volumes form a complete, modern reference to the properties and production behaviour of carbonate petroleum reservoirs. The book contains valuable glossaries to geologic and petroleum engineering terms providing exact definitions for writers and speakers. Lecturers will find a useful appendix devoted to questions and problems that can be used for teaching assignments as well as a guide for lecture development. In addition, there is a chapter devoted to core analysis of carbonate rocks which is ideal for laboratory instruction. Managers and production engineers will find a review of the latest laboratory technology for carbonate formation evaluation in the chapter on core analysis. The modern classification of carbonate rocks is presented with petroleum production performance and overall characterization using seismic and well test analyses. Separate chapters are devoted to the important naturally fractured and chalk reservoirs. Throughout the book, the emphasis is on formation evaluation and performance. This two-volume work brings together the wide variety of approaches to the study of carbonate reservoirs and will therefore be of value to managers, engineers, geologists and lecturers.

Author :
Publisher :
Page : pages
File Size : 37,61 MB
Release : 2007
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We present an analytical approach for pressure transienttest analysis in naturally fractured vuggy reservoirs. This analysisapproach relies on a triple-continuum concept, using observed geologicaldata from carbonate oil formations in western China, to describetransient flow behavior in fracture-vug-matrix reservoirs. In theconceptual mathematical model, fractured vuggy rock is considered as atriple-continuum medium, consisting of fractures, rock matrix, and vugs(or cavities). Similar to the classical double-porosity model, thefracture continuum is assumed to be responsible for the occurrence ofglobal flow, while vuggy and matrix continua (providing primary storagespace) interact locally with each other as well as with globallyconnected fractures. Furthermore, the triple continua of fractures, matrix, and vugs are assumed to have uniform and homogeneous propertiesthroughout, and intercontinuum flows between them are at pseudosteadystate. With these assumptions, we derive analytical solutions in Laplacespace for transient flow toward a well in an infinite and finitereservoir with wellbore storage and skin effects. The analyticalsolutions reveal typical pressure responses in a fracture-vug-matrixreservoir and can be used for estimating vug properties, in addition tofracture and matrix parameters, through properly designed and conductedwell tests. As application examples, actual well test data from afractured-vuggy reservoir in Western China are analyzed using the triplecontinuum model.

Author : Djebbar Tiab
Publisher : Elsevier
Page : 1072 pages
File Size : 43,18 MB
Release : 2024-08-23
Category : Science
ISBN : 0443264961

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Pressure Transient Analysis: Pressure Derivative provides focuses on applications of pressure and derivative data for interpretation of pressure transient tests, offering alternatives to costly commercial software. Building from basics, this practical text spans: wells near single and multi-boundary systems, hydraulically fractured wells, naturally fractured reservoirs, interpretation of interference and pulse tests, gas well test analysis (including sources of emissions and decarbonizing strategies, geological sequestration, CCS risks and stress on CCS), multiphase flow, injectivity and falloff tests, rate transient and multi-rate tests, partially penetrated / perforated vertical and slanted wells, and horizontal wells in conventional and unconventional reservoirs. Many techniques and equations presented in this book can be found in the black box of commercial well-test analysis software packages - this practical text unlocks, unpacks, and makes critical, analytical tools accessible to core users.

Author : Roberto Aguilera
Publisher : PennWell Books
Page : 730 pages
File Size : 24,73 MB
Release : 1980
Category : Science
ISBN :

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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 : Jun Yao
Publisher : Springer
Page : 253 pages
File Size : 31,35 MB
Release : 2017-08-08
Category : Science
ISBN : 3662550326

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This book solves the open problems in fluid flow modeling through the fractured vuggy carbonate reservoirs. Fractured vuggy carbonate reservoirs usually have complex pore structures, which contain not only matrix and fractures but also the vugs and cavities. Since the vugs and cavities are irregular in shape and vary in diameter from millimeters to meters, modeling fluid flow through fractured vuggy porous media is still a challenge. The existing modeling theory and methods are not suitable for such reservoir. It starts from the concept of discrete fracture and fracture-vug networks model, and then develops the corresponding mathematical models and numerical methods, including discrete fracture model, discrete fracture-vug model, hybrid model and multiscale models. Based on these discrete porous media models, some equivalent medium models and methods are also discussed. All the modeling and methods shared in this book offer the key recent solutions into this area.

Author :
Publisher :
Page : 16 pages
File Size : 26,44 MB
Release : 1998
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This report outlines the need for new tools for the simulation of fractured carbonate reservoirs. Several problems are identified that call for the development of new reservoir simulation physical models and numerical techniques. These include: karst and vuggy media wherein Darcy's and traditional multi-phase flow laws do not apply; the need for predicting the preproduction state of fracturing and stress so that the later response of effective stress-dependent reservoirs can be predicted; and methods for predicting the fracturing and collapse of vuggy and karst reservoirs in response to draw-down pressure created during production. Specific research directions for addressing each problem are outlined and preliminary results are noted.

Author : John Lee
Publisher :
Page : 378 pages
File Size : 34,23 MB
Release : 2003
Category : Business & Economics
ISBN :

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Pressure Transient Testing presents the fundamentals of pressure-transient test analysis and design in clear, simple language and explains the theoretical bases of commercial well-test-analysis software. Test-analysis techniques are illustrated with complete and clearly written examples. Additional exercises for classroom or individual practice are provided. With its focus on physical processes and mathematical interpretation, this book appeals to all levels of engineers who want to understand how modern approaches work. Pressure transient test analysis is a mature technology in petroleum engineering; even so, it continues to evolve. Because of the developments in this technology since the last SPE textbook devoted to transient testing was published, we concluded that students could benefit from a textbook approach to the subject that includes a representative sampling of the more important fundamentals and applications. We deliberately distinguish between a textbook approach, which stresses understanding through numerous examples and exercises dealing with selected fundamentals and applications, and a monograph approach, which attempts to summarize the state-of-the-art in the technology. Computational methods that transient test analysts use have gone through a revolution since most existing texts on the subject were written. Most calculations are now done with commercial software or by spreadsheets or proprietary software developed by users to meet personal needs and objectives. These advances in software have greatly increased productivity in this technology, but they also have contributed to a "black box" approach to test analysis. In this text, we attempt to explain what's in the box, and we do not include a number of the modern tools that enhance individual engineer productivity. We hope, instead, to provide understanding so that the student can use the commercial software with greater appreciation and so that the student can read monographs and papers on transient testing with greater appreciation for the context of the subject. Accordingly, this text is but an introduction to the vast field of pressure transient test analysis.