Inverse Modeling of Tight Gas Reservoirs PDF Download

Author: George Mtchedlishvili
Publisher:
ISBN:
Category :
Languages : en
Pages : 0

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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :

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In terms of a considerable increase the quality of characterization of tight-gas reservoirs, the aim of the present thesis was (i) an accurate representation of specific conditions in a reservoir simulation model, induced after the hydraulic fracturing or as a result of the underbalanced drilling procedure and (ii) performing the history match on a basis of real field data to calibrate the generated model by identifying the main model parameters and to investigate the different physical mechanisms, e.g. multiphase flow phenomena, affecting the well production performance. Due to the complexity of hydrocarbon reservoirs and the simplified nature of the numerical model, the study of the inverse problems in the stochastic framework provides capabilities using diagnostic statistics to quantify a quality of calibration and reliability of parameter estimates. As shown in the present thesis the statistical criteria for model selection may help the modelers to determine an appropriate level of parameterization and one would like to have as good an approximation of structure of the system as the information permits.

Author: Ali Kadkhodaie
Publisher: Elsevier
ISBN: 0323901816
Category : Business & Economics
Languages : en
Pages : 277

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Book Description
Reservoir Characterization of Tight Gas Sandstones: Exploration and Development is essential reading for those working in oil and gas exploration (both in industry and academia) as it contains chapters that help them further understand all aspects of tight gas reservoirs. In this book, experts in industry and academia update readers on new methods of tight gas reservoir modeling and evaluation. As there are very limited published books in the field of tight sandstones, this book will benefit readers by making them familiar with state-of-art methods of tight gas sandstones characterization and evaluation. Features case studies from countries with considerable tight gas sandstones such as the United States, China, Canada and Australia Includes recent developments in sedimentological, petrophysical, reservoir modeling and fracking technologies of tight gas sandstone reservoirs Covers applications for the characterization and evaluation of tight sandstones for the methodologies presented

Author: Qiquan Ran
Publisher: Springer Nature
ISBN: 9813298480
Category : Technology & Engineering
Languages : en
Pages : 411

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This book systematically introduces readers to the simulation theory and techniques of multiple media for unconventional tight reservoirs. It summarizes the macro/microscopic heterogeneities; the features of multiscale multiple media; the characteristics of complex fluid properties; the occurrence state of continental tight oil and gas reservoirs in China; and the complex flow characteristics and coupled production mechanism under unconventional development patterns. It also discusses the simulation theory of multiple media for unconventional tight oil and gas reservoirs; mathematic model of flow through discontinuous multiple media; geological modeling of discrete multiscale multiple media; and the simulation of multiscale, multiphase flow regimes and multiple media. In addition to the practical application of simulation and software for unconventional tight oil and gas, it also explores the development trends and prospects of simulation technology. The book is of interest to scientific researchers and technicians engaged in the development of oil and gas reservoirs, and serves as a reference resource for advanced graduate students in fields related to petroleum.

Author: Jebraeel Gholinezhad
Publisher: Springer
ISBN: 3319707698
Category : Technology & Engineering
Languages : en
Pages : 96

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This book addresses the problems involved in the modelling and simulation of shale gas reservoirs, and details recent advances in the field. It discusses various modelling and simulation challenges, such as the complexity of fracture networks, adsorption phenomena, non-Darcy flow, and natural fracture networks, presenting the latest findings in these areas. It also discusses the difficulties of developing shale gas models, and compares analytical modelling and numerical simulations of shale gas reservoirs with those of conventional reservoirs. Offering a comprehensive review of the state-of-the-art in developing shale gas models and simulators in the upstream oil industry, it allows readers to gain a better understanding of these reservoirs and encourages more systematic research on efficient exploitation of shale gas plays. It is a valuable resource for researchers interested in the modelling of unconventional reservoirs and graduate students studying reservoir engineering. It is also of interest to practising reservoir and production engineers.

Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 70

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The US Department of Energy, Federal Energy Technology Center, has sponsored a project to simulate the behavior of tight, fractured, strata-bound gas reservoirs that arise from irregular discontinuous, or clustered networks of fractures. New FORTRAN codes have been developed to generate fracture networks, or simulate reservoir drainage/recharge, and to plot the fracture networks and reservoirs pressures. Ancillary codes assist with raw data analysis.

Author: Mark D. Zoback
Publisher: Cambridge University Press
ISBN: 1107087074
Category : Business & Economics
Languages : en
Pages : 495

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A comprehensive overview of the key geologic, geomechanical and engineering principles that govern the development of unconventional oil and gas reservoirs. Covering hydrocarbon-bearing formations, horizontal drilling, reservoir seismology and environmental impacts, this is an invaluable resource for geologists, geophysicists and reservoir engineers.

Author: Miṣr Wizārat aṯ-Ṯaqāfa
Publisher:
ISBN:
Category :
Languages : en
Pages : 154

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Author: Samuel Robert Aydelotte
Publisher:
ISBN:
Category : Oil wells
Languages : en
Pages : 124

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Author: consultant expert mohamed taha
Publisher:
ISBN:
Category :
Languages : en
Pages : 270

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AbstractThe present thesis focusses on two main issues: (i) the development of a multi-phase simula-tion tool for the characteristics of tight-gas reservoirs, and (ii) the investigation of advancedstimulation techniques. The latter mainly implies the analysis of certain damaging mechanisms,as well as the derivation of general modelling guidelines for fractured wells and underbalanceddrilling.A special simulation tool is developed, realised in a Fortran-MATLAB coupling. The numeri-cal model is based on the control-volume method with finite differences. It accounts for inertialnon-Darcy effects, non-Newtonian fluid rheology and stress dependency of permeability via asimplified approach. The discretisation framework is fully unstructured, using the connectionlist approach and the common two-point flow stencil. Wells and boundary conditions can behandled very flexible in the code. Contrary to conventional treatment in simulators, wells arediscretely included in the simulator.Inertial non-Darcy flow and stress dependency of reservoir permeability are shown to affect theaccuracy of simulation models, despite low gas rates. Considering a realistic scenario, with non-Darcy flow and permeability (stress) dependent non-Darcy flow coefficients, stress dependencyof reservoir permeability and fracture closure, a total reduction of 40 % is possible in a 10 yearproduction period under realistic conditions. New type-curves are presented for non-Darcy flowin fracture and reservoir, allowing for the determination of non-Darcy flow related parameters.The stress sensitivity of tight-gas rocks is crucial when simulating such reservoirs. The stressdependency of the reservoir permeability impacts the productivity to a much higher degree thanthe fracture closure.A two-phase model is presented for the simulation of cleanup processes in terms of loadwater recovery. The fracturing fluid is treated as the water phase. The load water, causinghydraulic damage, hardly curtails productivity. To get considerable reductions in productivity,permeability in the fracture vicinity needs to be severely impaired. Due to the flow pattern,fractured wells are generally less sensitive against near wellbore damage than radial wells. Anenhanced three-phase cleanup model is presented for the investigations of the polymer gelcleanup, incorporating a yield power law rheology (the Herschel-Bulkley model). The combinedoccurrence of loadwater recovery including capillary forces and the gel cleanup, are investigatedfor the first time. First results indicate that both processes are only weakly coupled.A new simulation methodology is presented to investigate underbalanced drilling, taking intoaccount multi-phase reservoir flow with capillary forces. A sensitivity analysis points out that thedegree of water encroachment is the key factor for a successful UBD operation. Countercurrentimbibition, causing water encroachment is also analysed. Hydraulic damage turns out to be farmore pronounced in tight-gas formations.