Oil Recovery from Naturally Fractured Reservoirs by Steam Injection Methods. Final Report PDF Download
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Author:
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Category : Oil field flooding
Languages : en
Pages :
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Book Description
Author:
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ISBN:
Category : Oil field flooding
Languages : en
Pages :
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Author: John C. Reis
Publisher:
ISBN:
Category : Oil fields
Languages : en
Pages : 223
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Author:
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Category :
Languages : en
Pages : 4
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Book Description
The objective of this study is to develop accurate models for predicting oil recovery in naturally fractured reservoirs by steam injection. This objective is being met through an integrated experimental, numerical, and analytical study of the recovery mechanisms that control oil recovery for this process. These mechanisms include capillary imbibition, thermal expansion, gas generation from chemical reactions, and temperature-dependent thermal properties.
Author: Ahmet Ersahin
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Due to a sharp fall in oil prices in late 2014, many oil exploration companies have either stopped operations or postponed projects to a future date. The resulting slowdown has strengthened the dependency on existing developed fields for oil production. This is a cause of concern for major oil corporations and governments worldwide, as the dependence on mature fields suggests that conventional oil extraction techniques may not be enough to maintain current demand and may lead to significant profit losses. Thus, the development of enhanced oil recovery (EOR) (also known as tertiary recovery) methods to improve recovery from developed fields has attracted attention.Thermal recovery, a widely used EOR method in heavy oil reservoirs, involves the introduction of heat into the formation to reduce the viscosity of the oil in the reservoir. Cyclic steam stimulation (CSS) is an effective thermal process used with naturally fractured reservoirs. The cyclic steam injection (CSI) method incorporates the stages of injecting, soaking and production one by one in a single well.The use of a commercial simulator for estimating production is common. However, the process can be time consuming and complex. Alternatively, it is possible to achieve results within seconds using an adequately trained artificial neural network (ANN).This study analyzes CSI performance based on its effectiveness with respect to viscosity contours and cumulative oil production. Naturally fractured reservoirs are excellent targets for steam injection because they possess a structure where steam can easily diffuse.
Author: United States. National Petroleum Technology Office
Publisher:
ISBN:
Category : Oil reservoir engineering
Languages : en
Pages : 84
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Book Description
Author: Alireza Bahadori
Publisher: Gulf Professional Publishing
ISBN: 0128130288
Category : Technology & Engineering
Languages : en
Pages : 536
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Book Description
Fundamentals of Enhanced Oil and Gas Recovery from Conventional and Unconventional Reservoirs delivers the proper foundation on all types of currently utilized and upcoming enhanced oil recovery, including methods used in emerging unconventional reservoirs. Going beyond traditional secondary methods, this reference includes advanced water-based EOR methods which are becoming more popular due to CO2 injection methods used in EOR and methods specific to target shale oil and gas activity. Rounding out with a chapter devoted to optimizing the application and economy of EOR methods, the book brings reservoir and petroleum engineers up-to-speed on the latest studies to apply. Enhanced oil recovery continues to grow in technology, and with ongoing unconventional reservoir activity underway, enhanced oil recovery methods of many kinds will continue to gain in studies and scientific advancements. Reservoir engineers currently have multiple outlets to gain knowledge and are in need of one product go-to reference. - Explains enhanced oil recovery methods, focusing specifically on those used for unconventional reservoirs - Includes real-world case studies and examples to further illustrate points - Creates a practical and theoretical foundation with multiple contributors from various backgrounds - Includes a full range of the latest and future methods for enhanced oil recovery, including chemical, waterflooding, CO2 injection and thermal
Author: Marcel Latil
Publisher: Editions TECHNIP
ISBN: 9782710810506
Category : Petroleum
Languages : en
Pages : 258
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Book Description
Contents : 1. Factors common to all enhanced recovery methods. 2. Water injection. 3. Gas injection in an oil reservoir (immiscible displacement). 4. Miscible drive. 5. Gas recycling in gas-condensate reservoirs. 6. Thermal recovery methods. 7. Other methods of enhanced recovery. References. Index.
Author: Xiaohu Dong
Publisher: Elsevier
ISBN: 0128242272
Category : Business & Economics
Languages : en
Pages : 330
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Book Description
Hybrid Enhanced Oil Recovery Processes for Heavy Oil Reservoirs, Volume 73 systematically introduces these technologies. As the development of heavy oil reservoirs is emphasized, the petroleum industry is faced with the challenges of selecting cost-effective and environmentally friendly recovery processes. This book tackles these challenges with the introduction and investigation of a variety of hybrid EOR processes. In addition, it addresses the application of these hybrid EOR processes in onshore and offshore heavy oil reservoirs, including theoretical, experimental and simulation approaches. This book will be very useful for petroleum engineers, technicians, academics and students who need to study the hybrid EOR processes, In addition, it will provide an excellent reference for field operations by the petroleum industry. Introduces emerging hybrid EOR processes and their technical details Includes case studies to help readers understand the application potential of hybrid EOR processes from different points-of-view Features theoretical, experimental and simulation studies to help readers understand the advantages and challenges of each process
Author: Abdul Sallam Omar Khamis Al Raba'ani
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Heavy oil contained in naturally fractured reservoirs is becoming an important resource as conventional oil reserves are depleted. However, maximizing recovery from such reservoirs is problematic due to the low flow rate of oil and the poor understanding of recovery mechanisms. One EOR method that is of particular interest is Thermally Assisted Gas-Oil Gravity Drainage (TA-GOGD). In this process, steam is injected into the reservoir. This heats the rock matrix blocks through the higher penneability fracture network and improves oil recovery principally by reducing the oil viscosity and thus increasing the rate of gravity drainage through the matrix. The work presented in this thesis aims to investigate and understand the mechanisms controlling the rate of gravity drainage during TA-GOGD and determine the key reservoir parameters that control recovery. This was achieved by studying the time scales for heating the matrix blocks by steam and gas oil gravity drainage as a function of reservoir and fluid properties using analytical formulae and detailed reservoir simulations. During the heating investigation, a simple formula for calculating the critical steam rate in the fractures is derived analytically. The formula shows that there is a critical steam injection rate for TA-GOGD in fractured reservoirs. If the injection rate is below this critical rate, the time to heat the matrix will increase and oil recovery increases with increasing injection rate. If the steam injection rate is greater than the critical rate then there is no significant increase in oil recovery with rate. The oil recovery mechanisms of TA -GOGD were also investigated numerically. The study involved the investigations of individual and collective impacts of the mechanisms of solution gas drive, C02 generation, steam distillation, connate water evaporation and gravity drainage, on the oil recovery for reservoir containing heavy oil using real field data and parameters. It was found that CO2 generation, water imbibition and oil expansion contribute more to oil recovery in the early times of oil production whereas distillation, thermal gas drive, viscosity reduction and gravity drainage mechanisms contribute more in the late times.
Author:
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ISBN:
Category :
Languages : en
Pages : 5
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Book Description
Thermal methods, and particularly steam injection, are currently recognized as the most promising for the efficient recovery of heavy oil. Despite significant progress, however, important technical issues remain open. Specifically, still inadequate is our knowledge of the complex interaction between porous media and the various fluids of thermal recovery (steam, water, heavy oil, gases, and chemicals). While, the interplay of heat transfer and fluid flow with pore- and macro-scale heterogeneity is largely unexplored. The objectives of this contract are to continue previous work and to carry out new fundamental studies in the following areas of interest to thermal recovery: displacement and flow properties of fluids involving phase change (condensation-evaporation) in porous media; flow properties of mobility control fluids (such as foam); and the effect of reservoir heterogeneity on thermal recovery. The specific projects are motivated by and address the need to improve heavy oil recovery from typical reservoirs as well as less conventional fractured reservoirs producing from vertical or horizontal wells. During this quarter work continued on: development of relative permeabilities during steam injection; optimization of recovery processes in heterogeneous reservoirs by using optimal control methods; and behavior of non-Newtonian fluid flow and on foam displacements in porous media.
