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    Investigating the Performance of Preformed Particle Gels (PPGs) for Conformance Control and Improve Oil Recovery in Heterogeneous Porous Media: Pore-Scale Analysis of Displacement Mechanisms

    , M.Sc. Thesis Sharif University of Technology Paprouschi, Aminsadegh (Author) ; Ghazanfari, Mohammad Hossein (Supervisor) ; Fatemi, Mobeen (Supervisor)
    Abstract
    According to the reported field experiences, excess water production from high permeable thief zones of oil reservoirs is the main source of severe operational problems and economic issues. Application of Preformed Particle Gels (PPGs) is an effective technique to overcome this problem. Static test analysis is a primary method for evaluating the performance of PPGs material at different conditions of pH, salinity, etc. However, the effect of the presence of oil and rock on the kinetics of swelling/de-swelling of PPGs is not well understood. Also, considering the vast field application of Co_2-based oil recovery methods, it is interesting to study the effect of carbon dioxide gas on swelling... 

    Evaluation of Sustainable Development of Energy Systems of Residential Buildings, Considering the Aspects of Environmental, Economic and Social

    , M.Sc. Thesis Sharif University of Technology Ali Ghanbari, Mohammad Hossein (Author) ; Abrishamchi, Ahmad (Supervisor)
    Abstract
    Today, energy has a great impact on the economy, political relations, prosperity, and lifestyle of human societies. Energy sustainable development has become inevitable because of factors such as increasing population growth and as a result, increasing the energy consumption, consuming more energy from fossil fuels, decreasing in reserves of fossil fuel resources, environmental damage caused by the burning down of fossil fuels and greenhouse gas emissions,high cost of energy from burning fossil fuels.Generally, the sustainable development isall steps in order to comply with economic development and protecting the environment, resources and living standards. Considering that a large part of... 

    Simulation Study of Inflow Control Device

    , M.Sc. Thesis Sharif University of Technology Jokar, Mohammad Javad (Author) ; Shad, Saeed (Supervisor)
    Abstract
    Optimizing and improving the design of wells will have significant impact on any recovery method. As for horizontal wells, despite the fact that horizontal wells improve reservoir access, they suffer from significant pressure loss as well as limited flow control locations and flow control and management. In addition, reservoir quality varies along the length of the well and in the reservoir. This will add further complexity and challenge in well control and production optimization. The design of completions plays a significant role in improving the productivity of a well as well as the life of the reservoir. Intelligent or smart completions can be used to monitor, evaluate and manage the... 

    Predictions of Formation Damage Due to Inorganic Scale Deposition during Water Injection in Oil Reservoirs Using Experimental-Based Mathematical Modeling

    , M.Sc. Thesis Sharif University of Technology Rahbari, Mohammad Reza (Author) ; Ghazanfari, Mohammad Hossein (Supervisor) ; Masihi, Mohsen (Supervisor)
    Abstract
    Water flooding is known as a common method to maintain reservoir pressure/enhance oil recovery. The major problem in this process induced from inorganic deposits that caused formation damage around wellbore region. It is due to incompatible nature of injected and formation water which results in permeability reduction and well productivity decrease. Solving this problem is an important issue in the petroleum industry. BaSO4, CaSO4 and SrSO4 are inorganic sediments formed in this process. The physical model of water transport in reservoir and scaling damage due to sediments contains at least two dominant parameters; the kinetics coefficient that specifies the velocity of chemical reaction,... 

    Development of Multi-objective Optimization Framework for Non-vertical Well Placement

    , M.Sc. Thesis Sharif University of Technology Rostamian, Aref (Author) ; Bazargan, Mohammad (Supervisor) ; Jamshidi, Saeed (Supervisor)
    Abstract
    An important step in the early stages of an oilfield development is the accurate identification of the location of production and injection wells which has a significant impact on productivity and profitability of the reservoir. Recently, operation companies in petroleum industry focus on production optimization, recovery enhancement and cost reduction; as a result, application of non-conventional wells (NCW) or non-vertical wells have dramatically increased. Well placement optimization is a complicated task as it is a function of several contributing factors including reservoir heterogeneities and economic constraints. The complexity of this task increases when it is considered as a... 

    Optimal Allocation of the Injection Gas for Gas Lift in one of the Oil Field by using Algorithms

    , M.Sc. Thesis Sharif University of Technology Afsharian Torghabeh, Masoud (Author) ; Masihi, Mohsen (Supervisor) ; Ghazanfari, Mohammad Hossein (Supervisor)
    Abstract
    At the early stages of production, oil reservoirs may have enough energy to push the oil from the reservoir into the wellbore and subsequently from the wellbore to the surface. When the reservoir energy is too low for the well to flow, or the production rate desired is greater than the reservoir energy can deliver, using some kind of artificial lift method to provide the energy to bring the fluid to the surface, seems to be necessary. Continuous flow gas lift is one of the most common artificial lift methods widely used in the oil industry during which, at appropriate pressure, gas is injected in a suitable depth into the tubing to gasify the oil column, and thus assist the production. Each... 

    Preparation of Suitable Membrane for NaOH Solution Enrichment

    , M.Sc. Thesis Sharif University of Technology Sheikholvaezin, Mohammad Naghi (Author) ; Musavi, Abbas (Supervisor) ; Bastani, Dariush (Supervisor)
    Abstract
    Sodium Hydroxide production industry is among the largest chemical industries that annually produces 66 million tons worldwide. NaOH which is produced through electrochemical cells needs to be further enriched. The use of membrane technology as a substitute for conventional processes has been a point of interest. Thin film composite membrane is among favorable membrane because of its ability to be customized layer by layer individually. In this thesis, for the purpose of making an optimized membrane for NaOH enrichment, we studied the preparation conditions and witnessed that by increasing MPD from 1.5 %wt. to 4.5%wt. The flux experiences a minimum at 3.5%wt, which is the maximum for... 

    Design and Characterization of Silica based Mud for Shale Drilling

    , M.Sc. Thesis Sharif University of Technology Farohi, Mohammad Reza (Author) ; Ramezani Saadat Abadi, Ahmad (Supervisor) ; Jamshidi, Saeed (Supervisor)
    Abstract
    Constant drilling in the shale formation causes many problems such as shale swelling and well instability. Annually many costs are spent dealing with these problems in the drilling industry. Many factors can affect this issue. The most important factor is the type of drilling fluid and its additives. The use of oil-based mud is the best option to deal with the clays instability but, due to environmental problems resulting from OBM, their use has been banned in most parts of the world. Therefore, the water-based mud is the only option for the oil industry that can modify its property by use of additives. In this study, the muds contain Nano silica have been introduced. Silicate as shale... 

    Investigation of Water Coning Phenomenon and its Effective Parameters in a Fractured Reservoir

    , M.Sc. Thesis Sharif University of Technology Emamirad, Pedram (Author) ; Masihi, Mohsen (Supervisor) ; Ghazanfari, Mohammad Hossein (Co-Advisor)
    Abstract
    Water coning is a complex phenomenon that depends on various parameters which include among: production rate, matrix and fracture permeability, perforation interval, aquifer size, mobility ratio, capillary pressure, etc. Production of water can greatly affect the productivity of a well and the reservoir at large volume. In naturally fractured reservoirs, this problem is more complex because permeability of the fractures in the porous media is too high. With this complexity of water coning behavior in naturally fractured reservoir, this phenomenon was studied by simulating a sector of a carbonate fractured reservoir supported by an aquifer using Eclipse-300 simulator. A sector of an Iranian... 

    The Simultaneous Effect of Nano Ferric Oxide and a Liquid Additive on Viscosity and Power Transmission of Drilling Cuttings to the Surface on the Water Base Mud Drilling to Optimization of These Properties

    , M.Sc. Thesis Sharif University of Technology Mohammad Gheimasi, Mostafa (Author) ; Goodarznia, Iraj (Supervisor) ; Ramazani, Ahmad (Co-Advisor)
    Abstract
    Transportation of cuttings and efficiency of the hole cleaning has been one of the major concerns of stake holders in the oil and gas industry.This is because a successful drilling program is a key to a productive and profitable oil and gas business. A successful drilling program is as a result of an efficiently cleaned hole. On the other hand, a poor or inefficient hole cleaning implies accumulation of cuttings or formation of cuttings bed in the well. This often leads to decreased rate of penetration, increased cost of drilling, fractured formation, increased plastic viscosity of mud as a result of grinding of cuttings and stuck pipe. Hole cleaning is effected primarily with a drilling... 

    Graphene Effect on the Rheological Behaviour of Drilling Fluid

    , M.Sc. Thesis Sharif University of Technology Banaei, Mohammad Hossein (Author) ; Ramezani Saadat, Ahmad (Supervisor) ; Jamshidi, Saeed (Supervisor)
    Abstract
    Since the early 90s, nanotechnology has contributed to several developments in a wide range of Science and industry such as medicine, Physics, Chemistry, Aerospace, electronics and Biology. In recent years, nanotechnology has also made development in the oil and gas industry. The drilling fluid is already one of the most important parts in drilling operation.The physical properties of a mud, rheological properties and minimize fluid invasion into the formation with perfect mudcake are important to assist in optimizing results. Nano-materials as one of the achievements of recent years are effective in achieving these purposes. To obtain the above properties, a variety of polymers as... 

    Experimental Investigation of Effect of Nanoparticles on Fines Migration Control in Porous Media

    , M.Sc. Thesis Sharif University of Technology Movahedi, Nasir (Author) ; Ghazanfari, Mohammad Hossein (Supervisor) ; Taghikhani, Vahid (Supervisor)
    Abstract
    Fines migration due to their severe problems during oil production must be controlled. They cause the productivity decline due to their deposition near the well bore. Recently, application of nanotechnology in fine migration control has been much attended in both experimental and field case investigations. The main goal of the present study is to find out the ability and different effects of Nano particles (NPs) such as concentration, types and even the magnetic sensitivity to retain fines migration. In order for this, two groups of tests were conducted by engineered porous media. In this study, for the first time, an experimental setup was designed and constructed to investigate the control... 

    Tubular Vacuum Solar Desalination Systems: Copper Coil Filled with Oil

    , M.Sc. Thesis Sharif University of Technology Asgari Azghandi, Alireza (Author) ; Shafii, Mohammad Behshad (Supervisor) ; Sani, Mehdi (Supervisor)
    Abstract
    Introducing the basic concepts of solar desalination systems, improving the performance and efficiency of the solar system under vacuum has been investigated. Further, according to the classification of the types of solar desalination systems, the details of their existing designs have been discussed. The solar desalination system under vacuum is classified into two types of solar systems under natural vacuum and under forced vacuum. The solar system under natural vacuum is divided into one-story and multi-story, while the solar system under forced vacuum is classified into two types, single-effect and multi-effect. Previous studies as well as the most important recent developments in this... 

    Experimental and Numerical Investigation the Effect of Geometry on Hydrodynamic Performance in Surface Piercing Propeller

    , Ph.D. Dissertation Sharif University of Technology Teimouri Rabor, Mahdi (Author) ; Seif, Mohammad Saeed (Supervisor)
    Abstract
    Due to the suitable performance characteristics and the widespread use of Surface Piercing Propellers (SPPs) in high-speed crafts, many experiments and numerical studies have been conducted in this field. Due to the lack of a comprehensive series similar to conventional propellers in the field of SPPs, in this thesis, it has been tried to personalize the suitable basis by conducting two separate experimental tests in the National Iranian Maritime Laboratory (NIMALA) towing tank and the cavitation tunnel at Sharif University using computational fluid dynamics method and the commercial code STAR-CCM+. For this purpose, a wide range of phenomena and effective parameters on hydrodynamic... 

    Modeling and Manipulation of Intracytoplasmic Cell Injection

    , M.Sc. Thesis Sharif University of Technology Moshtaghi, Behnam (Author) ; Ahmadian, Mohammad Taghi (Supervisor)
    Abstract
    The injection process on cell is a very accurate and sensitive operation. This method is used for several new invented approaches such as tracytoplasmic Cell Injection or drug delivery. Controlling the injection force in micro scale is one of the problems of mentioned operations. Current huge and expensive laboratorial devices are helping the operators to do injection operation with :nore success. In this study a simple and novel microelectromechanical (MEMS) mechanism for doing injection process automatically on the biological cells is proposed. In order to controlling this device properly, we should model and simulate the operation condition from initial position to final condition. This... 

    2-D Modeling of Blood Flow in Mitral Valve During its Closing and Opening

    , M.Sc. Thesis Sharif University of Technology Jamshidi, Hadi (Author) ; Firoozabadi, Bahar (Supervisor) ; Saeedi, Mohammad Saeed (Co-Supervisor)
    Abstract
    Problems with the mitral valve can make the heart less efficient at pumping blood around the body. Severe problems can lead to heart failure if the valve is not surgically repaired or replaced. A simple approximation of the heart geometry is used and the valve dimensions are based on reported measurements. The primary objective for this study is to design and simulate the opening and closing behavior of the mitral valve using 2D fluid-structure interaction (FSI) model using ADINA software in order to evaluate and investigate the hemodynamic performance and problems of mitral valve, in which the blood is described as a viscous incompressible fluid, and the mitral valve is described as an... 

    Experimental Study and Optimization of Laser Assisted Machining of Particle­ Reinforced Aluminum­ Matrix Composite

    , M.Sc. Thesis Sharif University of Technology Mirshamsi, Mohammad Ali (Author) ; Movahhedy, Mohammad Reza (Supervisor) ; Khodaygan, Saeed (Co-Supervisor)
    Abstract
    In this thesis, the process of laser assisted machining (LAM) of metal matrix composites (MMC) is experimentally studied. The effects of process parameters (cutting speed, feed rate and depth of cut), laser parameters (laser power, laser frequency and laser beam angle), and the percentage of reinforcing particles on the tool wear and the surface roughness are investigated. Furthermore, the effects of these parameters on the built-up edge (BUE), chip shape, and workpiece temperature are explored.The experiments were performed using uncoated tungsten carbide and PCD tools under dry conditions. In order to analyze the sensitivity of the process parameters, the Plackett-Burman method was used... 

    Analytical and Experimental Analyses of Nonlinear Vibrations in a Rotary Inverted Pendulum

    , M.Sc. Thesis Sharif University of Technology Rahimi Dolatabad, Mohammad Javad (Author) ; Khayyat, Amir Ali Akbar (Supervisor) ; Pasharavesh, Abdolreza (Co-Supervisor)
    Abstract
    Investigation of possible vibratory responses of dynamical systems around their stable equilibria is an essential step which must be taken before their both design and application. The attained results of such a study can largely help to prevent instability in closed-loop stabilized systems by avoiding excitation of the system in the neighborhood of its resonance. In this paper, nonlinear oscillations of a Rotary Inverted Pendulum (RIP) enjoying a full-state feedback controller is investigated. Lagrange’s equations are employed to derive an accurate 2-DoF mathematical model whose parameters are extracted by both measurement and 3D modeling of the real system components. The perturbative...