Typical type1 naturally fractured reservoirs are the amal field in libya, edison. Simulation of naturally fractured reservoirs with simbestii mohammed s. Pdf advances in the study of naturally fractured hydrocarbon. Fracture porosity of naturally fractured reservoirs onepetro.
Naturally fractured reservoirs fluid flow in petroleum. Pore throat aperture radii, height above free water table, and winland r35. Geologic analysis of naturally fractured reservoirs ronald nelson geologists, engineers, and petrophysicists concerned with hydrocarbon production from naturally fractured reservoirs will find this book a valuable tool for obtaining pertinent rock data to evaluate reserves and optimize well location and performance. They analyzed the effects of the storativity ratio and interporosity flow coefficient on. In type 1 reservoirs, fractures provide the essential reservoir storage capacity and permeability. However, due to transit disruptions in some geographies, deliveries may be delayed. Geological analysis of naturally fractured reservoirs. This course covers geologic and engineering concepts, methodology, and technology used to characterize, evaluate, and manage naturallyfractured reservoirs. Previously, roberto was an nserc industrial research chair conocophillips nsercaeri chair. Exploring for naturally fractured reservoirs onepetro. Roberto aguilera, 1995, naturally fractured reservoirs 2nd edition. Natural fractured reservoir engineering phdg textbooks in preparation, intended to be issued during 2015.
Performance forecast and recovery from shale petroleum and tight petroleum reservoirs. Numerous and frequentlyupdated resource results are available from this search. They idealized naturally fractured reservoirs as a system composed of continuum orthogonal fractures network superimposed by a non continuum, identical, regular. Applications and limitations of geologic and engineering procedures and tools are discussed. Geologic analysis of naturally fractured reservoirs ronald. In this method, it is assumed that the sonic log provides matrix porosity. This course covers geologic and engineering concepts, methodology, and technology used to characterize, evaluate, and manage naturally fractured reservoirs. The productivity and development of naturally fractured reservoirs are mainly affected by the fracture net configuration. Emphasis is placed on the relationship between geology, log interpretation, well testing, and primarysecondary recovery of hydrocarbons from naturally fractured reservoirs. Their complex behaviour during production has traditionally proved difficult to predict, causing a large degree of uncertainty in reservoir development. Discretization and gridding in reservoir simulation 2.
The behavior of naturally fractured reservoirs including. Reliable information about the coronavirus covid19 is available from the world health organization current situation, international travel. Geologic and engineering aspects of naturally fractured. Roberto aguilera 2003 equation 2, and which is a function of the partition coefficient, and another. Depending on the selection of the radial flow regime, different well and reservoir models may be possible. Pdf naturally fractured reservoirs, within which porosity, permeability pathways andor impermeable barriers formed. The methods, illustrated with stepbystep examples, allow calculation of fracture tmnsmissivity, storage capacity coefficient, skin, size of matrix blocks, frscturi porosity. Naturally fractured reservoirs aguilera, roberto on. Hydraulic fracturing of naturally fractured reservoirs. Naturally fractured reservoirs in the ukcs tim wynn agr tracs 20 may 2018 1. Comparison with naturally fractured and conventional reservoirs. Purchase geologic analysis of naturally fractured reservoirs 2nd edition.
On the other hand, they represent some of the largest, most productive reservoirs on earth. Naturally fractured reservoirs production mechanism of a fractured reservoir. This publication deals exclusively with naturally fractured reservoirs, and includes many subjects usually treated in separate volumes. Problems related to naturally fractured reservoirs by adel. Aguilera s research interests include the evaluation of naturally fractured reservoirs, tight and shale reservoirs, petrophysics, hydraulic fracturing, forecasting reservoir performance, and economics. For naturally fractured reservoirs, roberto aguilera established an unsteady state water invasion model, taking the transient and pseudosteady interporosity flow into account. Students of th e following universities can ask for free copies for. Purchase of an open document does not constitute license for republication in any form, nor does it allow web posting without prior written permission. Naturally fractured reservoirs pdf free download epdf. Oclcs webjunction has pulled together information and resources to assist library staff as they consider how to handle. They are also notorious for early gas or water breakthrough. The examples show that the amount of free gas in shale reservoirs, as a percent of. Numerical results show that d, the ratio of matrix.
This course covers geologic concepts, methodology, and technology used to characterize, evaluate, and manage naturallyfractured reservoirs. Geologic analysis of naturally fractured reservoirs 2nd. Naturally fractured reservoirs by roberto aguilera naturally fractured reservoirs by roberto aguilera this book deals exclusively with naturally fractured reservoirs and includes many subjects usually treated in separate volumes. The solution is straightforward, and involves only ordinary bessel functions.
Naturally fractured reservoirs have been classified according to the relative contribution of the matrix and fractures to the total fluid production. Fractured reservoirs the reservoir gasoil ratio, gor us. For naturally fractured reservoirs, roberto aguilera 29 established an unsteady state water. Numerical results show that d, the ratio of matrix system permeability to. The problem is reduced to solving an integral equation. Wayne narr is a structural geologist with interest in characterization and modeling of naturally fractured reservoirs. Well test analysis of naturally fractured reservoirs roberto aguilera, spe, servipetrol ltd. It is written for students, reservoir geologists, log analysts and petroleum engineers. A triple porosity model for petrophysical analysis of naturally fractured reservoirs. The challenge of estimating recovery from naturally fractured reservoirs. He held the title of senior research consultant for chevron energy technology company where he worked for 27 years on an array of international projects that included reservoir structural geology studies, consulting, technology development, training, and. He has presented his course on naturally fractured reservoirs and has rendered consulting services throughout the world. Therefore, when looking for naturally fractured reservoirs, the chances for success would be better if, instead of drilling vertical holes, directional holes, perpendicular to the orientation of the fractures were drilled. The challenge of estimating recovery from naturally fractured.
They analyzed the effects of the storativity ratio and interporosity flow coefficient on dimensionless water influx curves. Pdf characterization of naturally fractured reservoirs. This publication deals exclusively with naturally fractured reservoirs, and includes many subjects usually. Geologic analysis of naturally fractured reservoirs covid19 update.
Analysis of naturally fractured reservoirs from conventional well logs includes associated papers 6420 and 6421. A petrophysical dualporosity model for evaluation of secondary mineralization and tortuosity in naturally fractured reservoirs. Naturally fractured reservoirs 2nd edition free ebook download as pdf file. Naturally fractured reservoirs roberto aguilera on.
Applications and limitations of geologic procedures and tools are discussed. This book addresses some of the challenges and advances in knowledge, approaches, concepts, and methods used to characterize the interplay of rock matrix and. The combination of sonic, neutron and density logs might indicate the presence of fractures schlumberger. Roberto aguilera schulich school of engineering university of. Evaluations under radial and linear flow conditions without the need of specialized software. Naturally fractured reservoirs training course petroskills fr. Methods are presented for matching observed pressure data during dcawdown or buildup tests. View naturally fractured reservoirs research papers on academia. In naturallyfractured reservoirs, the derivative tends to show several stabilizations at different levels. Naturally fractured reservoirs research papers academia. Geologic analysis of naturally fractured reservoirs. The difference between neutron or density or the combination neutrondensity and sonic porosity is interpreted as.
The applied study of naturally fractured reservoirs seeks to constrain this uncertainty by developing new understanding, and is necessarily a broad, integrated, interdisciplinary topic. Therefore, when looking for naturally fractured reservoirs, the chances for success would be better if, instead of drilling vertical holes, directional. Pressure drop around a producing wellbore in a fractured reservoir is very low the free water oil production in a fractured reservoir is essentially a function of. Roberto aguilera, schulich school of engineering, university of calgary. The behavior of naturally fractured reservoirs joi%warren p, j, rqot members aime abstract an idealized model has been developed for the purpose of studying the characteristic behavioroja permeable medium which contains regions which contribute sigizificantly to tbe pore volume o. A highly practical edition, naturally fractured reservoirs is written for students, reservoir geologists, log. It is important to establish some basic criteria for recognizing when fractures are an important element in reservoir performance and to recognize the nature and performance characteristics of a naturally fractured reservoir. Naturally fractured reservoirs present unique and specialized challenges to hydrocarbon extraction. Simulation of naturally fractured reservoirs with simbestii.
Naturally fractured reservoirs, 2nd edition aguilera, dr. Bunger csiro earth science and resource engineering ian wark laboratory melbourne, victoria, 3168, australia, rob. In naturally fractured reservoirs, the derivative tends to show several stabilizations at different levels. Naturally fractured reservoir characterization seeks to confront many of these challenges by providing an introduction to the engineering and geological character of naturally fractured reservoirs. The challenge of estimating recovery from naturally. Field examples and case studies demonstrate the importance of integrated geologic and. An alternative analytical solution to the system of equations for fluid flow through a doubleporosity medium with a boundary condition of an equipotential surface is given in this paper. Naturally fractured reservoirs present a production paradox. Nelson 1 identifies four types of naturally fractured reservoirs. Well production heterogeneity is a characteristic of most naturally fractured reservoirs. Roberto aguileras research works curtin university.