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Thermodynamic Modeling Of Asphaltene Precipitation
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Book Synopsis Thermodynamic Modeling of Asphaltene Precipitation by : Mahdi Zeinali Hasanvand
Download or read book Thermodynamic Modeling of Asphaltene Precipitation written by Mahdi Zeinali Hasanvand and published by LAP Lambert Academic Publishing. This book was released on 2012-04 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: Asphaltene precipitation is a sophisticated issue in the upstream oil industry, worldwide, and has detrimental effect on a verity of production processes in oilfields; it damages the properties of the reservoir and causes an unfavorable and significant decrease in oil production. Many oil reservoirs encounter asphaltene precipitation as a major problem during natural production. It is desirable to predict and investigate the precipitation behavior of asphaltene in different pressure temperature conditions. In spite of numerous studies to predict asphaltene behavior, the effect of temperature on asphaltene precipitation during pressure depletion at reservoir conditions is still obscure in the literature. In this work the PVT data as well as experimental data of asphaltene precipitation at reservoir conditions of two Iranian heavy and light oil samples are used, and the asphaltene precipitation and deposition envelops (APE and ADE) of the oils are developed.
Book Synopsis Asphaltene Deposition by : Francisco M. Vargas
Download or read book Asphaltene Deposition written by Francisco M. Vargas and published by CRC Press. This book was released on 2018-05-16 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: As global consumption of fossil fuels such as oil increases, previously abundant sources have become depleted or plagued with obstructions. Asphaltene deposition is one of such obstructions which can significantly decrease the rate of oil production. This book offers concise yet thorough coverage of the complex problem of asphaltene precipitation and deposition in oil production. It covers fundamentals of chemistry, stabilization theories and mechanistic approaches of asphaltene behavior at high temperature and pressure. Asphaltene Deposition: Fundamentals, Prediction, Prevention, and Remediation explains techniques for experimental determination of asphaltene precipitation and deposition and different modeling tools available to forecast the occurrence and magnitude of asphaltene deposition in a given oil field. It discusses strategies for mitigation of asphaltene deposition using chemical inhibition and corresponding challenges, best practices for asphaltene remediation, current research, and case studies.
Book Synopsis Thermodynamic Modeling for Organic Solid Precipitation by :
Download or read book Thermodynamic Modeling for Organic Solid Precipitation written by and published by . This book was released on 1992 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt: A generalized predictive model which is based on thermodynamic principle for solid-liquid phase equilibrium has been developed for organic solid precipitation. The model takes into account the effects of temperature, composition, and activity coefficient on the solubility of wax and asphaltenes in organic solutions. The solid-liquid equilibrium K-value is expressed as a function of the heat of melting, melting point temperature, solubility parameter, and the molar volume of each component in the solution. All these parameters have been correlated with molecular weight. Thus, the model can be applied to crude oil systems. The model has been tested with experimental data for wax formation and asphaltene precipitation. The predicted wax appearance temperature is very close to the measured temperature. The model not only can match the measured asphaltene solubility data but also can be used to predict the solubility of asphaltene in organic solvents or crude oils. The model assumes that asphaltenes are dissolved in oil in a true liquid state, not in colloidal suspension, and the precipitation-dissolution process is reversible by changing thermodynamic conditions. The model is thermodynamically consistent and has no ambiguous assumptions.
Book Synopsis Modeling of Asphaltene and Wax Precipitation by :
Download or read book Modeling of Asphaltene and Wax Precipitation written by and published by . This book was released on 1991 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt: This research project was designed to focus on the development of a predictive technique for organic deposition during gas injection for petroleum EOR. A thermodynamic model has been developed to describe the effects of temperature, pressure, and composition on asphaltene precipitation. The proposed model combines regular solution theory with Flory-Huggins polymer solutions theory to predict maximum volume fractions of asphaltene dissolved in oil. The model requires evaluation of vapor-liquid equilibria, first using an equation of state followed by calculations of asphaltene solubility in the liquid-phase. A state-of-the-art technique for C{sub 7+} fraction characterization was employed in developing this model. The preliminary model developed in this work was able to predict qualitatively the trends of the effects of temperature, pressure, and composition. Since the mechanism of paraffinic wax deposition is different from that of asphaltene deposition, another thermodynamic model based on the solid-liquid solution theory was developed to predict the wax formation. This model is simple and can predict the wax appearance temperature with reasonable accuracy. Accompanying the modeling work, experimental studies were conducted to investigate the solubility of asphaltene in oil land solvents and to examine the effects of oil composition, CO2, and solvent on asphaltene precipitation and its properties. This research focused on the solubility reversibility of asphaltene in oil and the precipitation caused by CO2 injection at simulated reservoir temperature and pressure conditions. These experiments have provided many observations about the properties of asphaltenes for further improvement of the model, but more detailed information about the properties of asphaltenes in solution is needed for the development of more reliable asphaltene characterization techniques. 50 refs., 8 figs., 7 tabs.
Book Synopsis Thermodynamic Models for Industrial Applications by : Georgios M. Kontogeorgis
Download or read book Thermodynamic Models for Industrial Applications written by Georgios M. Kontogeorgis and published by John Wiley & Sons. This book was released on 2009-12-01 with total page 710 pages. Available in PDF, EPUB and Kindle. Book excerpt: Using an applications perspective Thermodynamic Models for Industrial Applications provides a unified framework for the development of various thermodynamic models, ranging from the classical models to some of the most advanced ones. Among these are the Cubic Plus Association Equation of State (CPA EoS) and the Perturbed Chain Statistical Association Fluid Theory (PC-SAFT). These two advanced models are already in widespread use in industry and academia, especially within the oil and gas, chemical and polymer industries. Presenting both classical models such as the Cubic Equations of State and more advanced models such as the CPA, this book provides the critical starting point for choosing the most appropriate calculation method for accurate process simulations. Written by two of the developers of these models, Thermodynamic Models for Industrial Applications emphasizes model selection and model development and includes a useful “which model for which application” guide. It also covers industrial requirements as well as discusses the challenges of thermodynamics in the 21st Century.
Book Synopsis Asphaltene Deposition Control by Chemical Inhibitors by : Ali Ghamartale
Download or read book Asphaltene Deposition Control by Chemical Inhibitors written by Ali Ghamartale and published by Gulf Professional Publishing. This book was released on 2021-08-21 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: Asphaltene Deposition Control by Chemical Inhibitors: Theoretical and Practical Prospects is the most advanced reference focused on chemical dispersants and inhibitors from both an experimental and modeling viewpoint. Adequate knowledge of the effective parameters in each treatment method, interactions, mechanisms and economic viewpoints involved in asphaltene treatment are crucial for future development, recovery forecast, and reserve prediction, hence this reference delivers on all these aspects. Sections cover the environmental impacts of asphaltene deposition, prevention methods, and experimental methods, both static and dynamic, to test the effectiveness of inhibitors on restricting asphaltene deposition. Rounding out with modeling methods used to simulate asphaltene-inhibitor interactions and a workflow to select suitable inhibitors by technical, economic and environmental considerations, this book will give today’s engineers and researchers the right tool to mitigate formation damage in a sustainably responsible way. Focuses on inhibitors, mitigators and the interplay between the asphaltene-inhibitors Helps readers learn from experimental models and replicate treatments with screening workflows Includes case studies that help readers make sustainable and economically-sound decisions on treatments
Book Synopsis Molecular Thermodynamics for Prevention of Asphaltene Precipitation by :
Download or read book Molecular Thermodynamics for Prevention of Asphaltene Precipitation written by and published by . This book was released on 1996 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt: Crude petroleum is a complex mixture of compounds with different chemical structures and molecular weights. Asphaltenes, the heaviest and most polar fraction of crude oil, are insoluble in normal alkanes such as n-heptane, but they are soluble in aromatic solvents such as toluene. The molecular nature of asphaltenes and their role in production and processing of crude oils have been the topic of numerous studies. Under some conditions, asphaltenes precipitate from a petroleum fluid, causing severe problems in production and transportation Our research objective is to develop a theoretically based, but engineering-oriented, molecular-thermodynamic model which can describe the phase behavior of asphaltene precipitation in petroleum fluids, to provide guidance for petroleum-engineering design and production. In this progress report, particular attention is given to the potential of mean force between asphaltene molecules in a medium of asphaltene-free solvent. This potential of mean force is derived using the principles of colloid science. It depends on the properties of asphaltene and those of the solvent as well as on temperature and pressure. The effect of a solvent on interactions between asphaltenes is taken into account through its density and through its molecular dispersion properties.
Book Synopsis Asphaltenes, Heavy Oils, and Petroleomics by : Oliver C. Mullins
Download or read book Asphaltenes, Heavy Oils, and Petroleomics written by Oliver C. Mullins and published by Springer Science & Business Media. This book was released on 2007-11-08 with total page 677 pages. Available in PDF, EPUB and Kindle. Book excerpt: With substantial contributions from experienced industrial scientists and engineers, this work will have real application towards improving process efficiency and improvement in the trillion-dollar global petroleum industry. It presents an overview of the emerging field of petroleomics, which endeavors to understand the fundamental components of crude oil. Petroleomics promises to revolutionize petroleum science in much the same way that genomics transformed the study of medicine not long ago. Asphaltenes are a particular focus, with many chapters devoted to the analysis of their structure and properties.
Book Synopsis Thermodynamic Micellization Model for Asphaltene Precipitation Inhibition by : Huanquan Pan
Download or read book Thermodynamic Micellization Model for Asphaltene Precipitation Inhibition written by Huanquan Pan and published by . This book was released on 1999 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Select Thermodynamic Models for Process Simulation by : Jean-Charles de Hemptinne
Download or read book Select Thermodynamic Models for Process Simulation written by Jean-Charles de Hemptinne and published by Editions TECHNIP. This book was released on 2012 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt: The selection of the most adequate thermodynamic model in a process simulation is an issue that most process engineer has to face sooner or later. This book, conceived as a practical guide, aims at providing adequate answers by analysing the questions to be looked at. The analysis (first chapter) yields three keys that are further discussed in three different chapters. (1) A good understanding of the properties required in the process, and their method of calculation is the first key. The second chapter provides to that end in a synthetic manner the most important equations that are derived from the fundamental principes of thermodynamics. (2) An adequate description of the mixture, which is a combination of models and parameters, is the second key. The third chapter makes the link between components and models, both from a numerical (parameterisation) and physical (molecular interactions) point of view. Finally, (3) a correct view of the phase behaviour and trends in regard of the process conditions is the third key. The fourth chapter illustrates the phase behaviour and makes model recommendations for the most significant industrial systems. A decision tree is provided at the end of this chapter. In the last chapter, the key questions are reviewed for a number of typical processes. This book is intended for process engineers, who are not specialists of thermodynamics but are confronted with this kind of problems and need a reference book, as well as process engineering students who will find an original approach to thermodynamics, complementary of traditional lectures
Book Synopsis Proceedings of the International Field Exploration and Development Conference 2020 by : Jia'en Lin
Download or read book Proceedings of the International Field Exploration and Development Conference 2020 written by Jia'en Lin and published by Springer Nature. This book was released on 2021-06-17 with total page 3487 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a compilation of selected papers from the 10th International Field Exploration and Development Conference (IFEDC 2020). The proceedings focuses on Reservoir Surveillance and Management, Reservoir Evaluation and Dynamic Description, Reservoir Production Stimulation and EOR, Ultra-Tight Reservoir, Unconventional Oil and Gas Resources Technology, Oil and Gas Well Production Testing, Geomechanics. The conference not only provides a platform to exchanges experience, but also promotes the development of scientific research in oil & gas exploration and production. The main audience for the work includes reservoir engineer, geological engineer, enterprise managers senior engineers as well as professional students.
Book Synopsis A Molecular-thermodynamic Framework for Asphaltene-oil Equilibria by :
Download or read book A Molecular-thermodynamic Framework for Asphaltene-oil Equilibria written by and published by . This book was released on 1997 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt: Asphaltene precipitation is a perennial problem in production and refinery of crude oils. To avoid precipitation, it is useful to predict the solubility of asphaltenes in petroleum liquids as a function of temperature, pressure and liquid-phase composition. In the molecular-thermodynamic model presented here, both asphaltenes and resins are represented by pseudo-pure components, and all other components in the solution are represented by a continuous medium which affects interactions among asphaltene and resin particles. The effect of the medium on asphaltene-asphaltene, resin-asphaltene, resin-resin pair interactions is taken into account through its density and molecular-dispersion properties. To obtain expressions for the chemical potential of asphaltene and for the osmotic pressure of an asphaltene-containing solution, the authors use the integral theory of fluids coupled with the SAFT model to allow for asphaltene aggregation and for adsorption of resin on asphaltene particles. With these expressions, a variety of experimental observations can be explained including the effects of temperature, pressure and composition on the phase behavior of asphaltene-containing fluids. For engineering application, the molecular parameters in this model must be correlated to some macroproperties of oil such as density and molecular weight. When such correlations are established, it will be possible to calculate asphaltene-precipitation equilibria at a variety of conditions for realistic systems.
Book Synopsis Review of Asphaltene Properties and Precipitation Modeling by : Neha Anand
Download or read book Review of Asphaltene Properties and Precipitation Modeling written by Neha Anand and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Asphaltenes are of special interest to the petroleum industry due to their complex, non-linear phase behavior and tendency to deposit in reservoir and production equipment that drives up production and remedial costs associated with oil recovery processes. Precipitated asphaltenes impart high viscosity to residual oil, plug pore throats, alter wettability and reduce hydrocarbon mobility. They are hard to characterize and pose problems even at higher temperatures and for light oils. Thus, the ability to predict transport and thermodynamic behavior of asphaltenic systems is crucial to ensure economic recovery of oil and reduce flow assurance issues. This work summarizes a detailed literature review of the current state of asphaltene science covering critical asphaltene properties such as molecular structure, chemical composition, asphaltenecrude oil phase behavior, transport properties and solubility parameters. The various theoretical approaches such as thermodynamic, scaling and artificial intelligence-based models to predict asphaltene precipitation have been described in detail and compared. This critical review encapsulates merits and demerits of the most prominent approaches and identifies further scope for improvement. The findings of this work are expected to form the basis of building a fully compositional simulator to predict asphaltene precipitation, flocculation and deposition that is in agreement with the experimentally obtained asphaltene properties
Book Synopsis Asphaltene Deposition by : Francisco M. Vargas
Download or read book Asphaltene Deposition written by Francisco M. Vargas and published by CRC Press. This book was released on 2018-05-16 with total page 323 pages. Available in PDF, EPUB and Kindle. Book excerpt: As global consumption of fossil fuels such as oil increases, previously abundant sources have become depleted or plagued with obstructions. Asphaltene deposition is one of such obstructions which can significantly decrease the rate of oil production. This book offers concise yet thorough coverage of the complex problem of asphaltene precipitation and deposition in oil production. It covers fundamentals of chemistry, stabilization theories and mechanistic approaches of asphaltene behavior at high temperature and pressure. Asphaltene Deposition: Fundamentals, Prediction, Prevention, and Remediation explains techniques for experimental determination of asphaltene precipitation and deposition and different modeling tools available to forecast the occurrence and magnitude of asphaltene deposition in a given oil field. It discusses strategies for mitigation of asphaltene deposition using chemical inhibition and corresponding challenges, best practices for asphaltene remediation, current research, and case studies.
Book Synopsis Development of a Compositional Reservoir Simulator for Asphaltene Precipitation Based on a Thermodynamically Consistent Model by : Karin G Gonzalez Abad
Download or read book Development of a Compositional Reservoir Simulator for Asphaltene Precipitation Based on a Thermodynamically Consistent Model written by Karin G Gonzalez Abad and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A rigorous three-phase asphaltene precipitation model was implemented into a compositional reservoir simulator to represent and estimate the reduction of porosity and permeability responsible for productivity impairment. Previous modeling techniques were computationally inefficient, showed thermodynamic inconsistencies, or required special laboratory experiments to characterize the fluid. The approach developed in this study uses a cubic equation of state to solve for vapor/liquid/liquid equilibrium (VLLE), where asphaltene is the denser liquid phase. Precipitation from the liquid mixture occurs as its solubility is reduced either by changes in pressure (natural depletion), or composition (i.e. mixing resulting from gas injection). The dynamic relationship between phase composition, pressure, and porosity/permeability is modeled with a finite differences reservoir simulator and solved using an implicit-pressure, explicit-saturations and explicit-compositions (IMPESC) direct sequential method. The robustness of this model is validated by the ability to reproduce experimental asphaltene precipitation data while predicting the expected phase behavior envelope and response to key thermodynamic variables (i.e. type of components and composition, pressure and, temperature). The three-phase VLLE flash provides superior thermodynamic predictions compared to existing commercial techniques. Computer performance analysis showed that the model has a comparable cost to existing asphaltene precipitation models, taking only 1.1 more time to calculate but requiring fewer tunable parameters. The VLLE flash was in average 4.47 times slower compared to a conventional two-phase vapor/liquid flash. This model has the speed of a flash calculation while maintaining thermodynamic consistency, enabling efficient optimization of reservoir development strategies to mitigate the detrimental effects of asphaltene precipitation on productivity. The electronic version of this dissertation is accessible from http://hdl.handle.net/1969.1/151068
Book Synopsis The Chemistry and Technology of Petroleum by : James G. Speight
Download or read book The Chemistry and Technology of Petroleum written by James G. Speight and published by CRC Press. This book was released on 2006-10-31 with total page 982 pages. Available in PDF, EPUB and Kindle. Book excerpt: Refineries must not only adapt to evolving environmental regulations for cleaner product specifications and processing, but also find ways to meet the increasing demand for petroleum products,particularly for liquid fuels and petrochemical feedstocks. The Chemistry and Technology of Petroleum, Fourth Edition offers a 21st century perspective
Download or read book Wax Deposition written by Zhenyu Huang and published by CRC Press. This book was released on 2016-03-09 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wax Deposition: Experimental Characterizations, Theoretical Modeling, and Field Practices covers the entire spectrum of knowledge on wax deposition. The book delivers a detailed description of the thermodynamic and transport theories for wax deposition modeling as well as a comprehensive review of laboratory testing for the establishment of appropr
