Kinetics Of Crude Oil Combustion In Porous Media Interpreted Using Isoconversional Methods

Author : Murat Cinar
Publisher : Stanford University
Page : 377 pages
File Size : 52,8 Mb
Release : 2011
Category : Electronic
ISBN : STANFORD:wz851jd4624

Get Book

Kinetics of Crude-oil Combustion in Porous Media Interpreted Using Isoconversional Methods by Murat Cinar Pdf

One method to access unconventional, heavy-oil and natural bitumen resources as well as waterflood residual oil is to apply in situ combustion (ISC) to oxidize in place a small fraction of the hydrocarbon thereby providing heat to reduce oil viscosity and pressure that enhances recovery. ISC is also attractive because it provides the opportunity to upgrade oil in-situ by increasing the API gravity and decreasing, for instance, sulfur content. Experimental analysis of crude-oil oxidation kinetics provides parameters, such as activation energy, for modeling and optimization of ISC processes. The complex nature of petroleum as a multi-component mixture and multi-step character of oxidation reactions complicates substantially the kinetic analysis of crude-oil. Isoconversional techniques provide model-free methods for estimating activation energy and naturally deconvolve multi-step reactions. In addition, isoconversional methods are also useful as a screening tool to recognize the burning characteristics of different oils. By using experimentally determined combustion kinetics of different oil samples along with combustion tube results, we show that isoconversional analysis of ramped temperature oxidation data is useful to predict combustion-front propagation. It also provides new insight into the nature of the reactions occurring during ISC. Ramped temperature oxidation (RTO) tests with effluent gas analysis are conducted to probe ISC reaction kinetics along with isothermal coke formation experiments. The role of oxygen during coke formation reactions (i.e., fuel formation for ISC) is investigated using X-ray photoelectron spectroscopy (XPS) of intermediate reaction products. The XPS data is analyzed along with companion RTO experiments to obtain a simplified multi-step reaction scheme. Synthetic cases illustrate the connection between a proposed reaction scheme for oil/matrix pairs and one-dimensional combustion front propagation. Analysis of experimental results illustrate that the reaction scheme is capable of reproducing experimental results including the basic trends in oxygen consumption and carbon oxides production for RTO experiments as a function of heating rate for both good and poor ISC candidates. The combination of XPS and RTO studies indicates that the quality (or reactivity) of coke formed during the process is a function of oxygen presence/absence.

Author : Murat Cinar
Publisher : Unknown
Page : 128 pages
File Size : 54,5 Mb
Release : 2011
Category : Electronic
ISBN : OCLC:748778997

Get Book

Kinetics of Crude-oil Combustion in Porous Media Interpreted Using Isoconversional Methods by Murat Cinar Pdf

One method to access unconventional, heavy-oil and natural bitumen resources as well as waterflood residual oil is to apply in situ combustion (ISC) to oxidize in place a small fraction of the hydrocarbon thereby providing heat to reduce oil viscosity and pressure that enhances recovery. ISC is also attractive because it provides the opportunity to upgrade oil in-situ by increasing the API gravity and decreasing, for instance, sulfur content. Experimental analysis of crude-oil oxidation kinetics provides parameters, such as activation energy, for modeling and optimization of ISC processes. The complex nature of petroleum as a multi-component mixture and multi-step character of oxidation reactions complicates substantially the kinetic analysis of crude-oil. Isoconversional techniques provide model-free methods for estimating activation energy and naturally deconvolve multi-step reactions. In addition, isoconversional methods are also useful as a screening tool to recognize the burning characteristics of different oils. By using experimentally determined combustion kinetics of different oil samples along with combustion tube results, we show that isoconversional analysis of ramped temperature oxidation data is useful to predict combustion-front propagation. It also provides new insight into the nature of the reactions occurring during ISC. Ramped temperature oxidation (RTO) tests with effluent gas analysis are conducted to probe ISC reaction kinetics along with isothermal coke formation experiments. The role of oxygen during coke formation reactions (i.e., fuel formation for ISC) is investigated using X-ray photoelectron spectroscopy (XPS) of intermediate reaction products. The XPS data is analyzed along with companion RTO experiments to obtain a simplified multi-step reaction scheme. Synthetic cases illustrate the connection between a proposed reaction scheme for oil/matrix pairs and one-dimensional combustion front propagation. Analysis of experimental results illustrate that the reaction scheme is capable of reproducing experimental results including the basic trends in oxygen consumption and carbon oxides production for RTO experiments as a function of heating rate for both good and poor ISC candidates. The combination of XPS and RTO studies indicates that the quality (or reactivity) of coke formed during the process is a function of oxygen presence/absence.

Author : Zhouyuan Zhu
Publisher : Stanford University
Page : 237 pages
File Size : 55,5 Mb
Release : 2011
Category : Electronic
ISBN : STANFORD:fn674bf7126

Get Book

Efficient Simulation of Thermal Enhanced Oil Recovery Processes by Zhouyuan Zhu Pdf

Simulating thermal processes is usually computationally expensive because of the complexity of the problem and strong nonlinearities encountered. In this work, we explore novel and efficient simulation techniques to solve thermal enhanced oil recovery problems. We focus on two major topics: the extension of streamline simulation for thermal enhanced oil recovery and the efficient simulation of chemical reaction kinetics as applied to the in-situ combustion process. For thermal streamline simulation, we first study the extension to hot water flood processes, in which we have temperature induced viscosity changes and thermal volume changes. We first compute the pressure field on an Eulerian grid. We then solve for the advective parts of the mass balance and energy equations along the individual streamlines, accounting for the compressibility effects. At the end of each global time step, we account for the nonadvective terms on the Eulerian grid along with gravity using operator splitting. We test our streamline simulator and compare the results with a commercial thermal simulator. Sensitivity studies for compressibility, gravity and thermal conduction effects are presented. We further extended our thermal streamline simulation to steam flooding. Steam flooding exhibits large volume changes and compressibility associated with the phase behavior of steam, strong gravity segregation and override, and highly coupled energy and mass transport. To overcome these challenges we implement a novel pressure update along the streamlines, a Glowinski scheme operator splitting and a preliminary streamline/finite volume hybrid approach. We tested our streamline simulator on a series of test cases. We compared our thermal streamline results with those computed by a commercial thermal simulator for both accuracy and efficiency. For the cases investigated, we are able to retain solution accuracy, while reducing computational cost and gaining connectivity information from the streamlines. These aspects are useful for reservoir engineering purposes. In traditional thermal reactive reservoir simulation, mass and energy balance equations are solved numerically on discretized reservoir grid blocks. The reaction terms are calculated through Arrhenius kinetics using cell-averaged properties, such as averaged temperature and reactant concentrations. For the in-situ combustion process, the chemical reaction front is physically very narrow, typically a few inches thick. To capture accurately this front, centimeter-sized grids are required that are orders of magnitude smaller than the affordable grid block sizes for full field reservoir models. To solve this grid size effect problem, we propose a new method based on a non-Arrhenius reaction upscaling approach. We do not resolve the combustion front on the grid, but instead use a subgrid-scale model that captures the overall effects of the combustion reactions on flow and transport, i.e. the amount of heat released, the amount of oil burned and the reaction products generated. The subgrid-scale model is calibrated using fine-scale highly accurate numerical simulation and laboratory experiments. This approach significantly improves the computational speed of in-situ combustion simulation as compared to traditional methods. We propose the detailed procedures to implement this methodology in a field-scale simulator. Test cases illustrate the solution consistency when scaling up the grid sizes in multidimensional heterogeneous problems. The methodology is also applicable to other subsurface reactive flow modeling problems with fast chemical reactions and sharp fronts. Displacement front stability is a major concern in the design of all the enhanced oil recovery processes. Historically, premature combustion front break through has been an issue for field operations of in-situ combustion. In this work, we perform detailed analysis based on both analytical methods and numerical simulation. We identify the different flow regimes and several driving fronts in a typical 1D ISC process. For the ISC process in a conventional mobile heavy oil reservoir, we identify the most critical front as the front of steam plateau driving the cold oil bank. We discuss the five main contributors for this front stability/instability: viscous force, condensation, heat conduction, coke plugging and gravity. Detailed numerical tests are performed to test and rank the relative importance of all these different effects.

Author : Jia'en Lin
Publisher : Springer
Page : 0 pages
File Size : 40,9 Mb
Release : 2021-07-14
Category : Technology & Engineering
ISBN : 9811524874

Get Book

Proceedings of the International Field Exploration and Development Conference 2019 by Jia'en Lin Pdf

This book gathers selected papers from the 8th International Field Exploration and Development Conference (IFEDC 2019) and addresses a broad range of topics, including: Low Permeability Reservoir, Unconventional Tight & Shale Oil Reservoir, Unconventional Heavy Oil and Coal Bed Gas, Digital and Intelligent Oilfield, Reservoir Dynamic Analysis, Oil and Gas Reservoir Surveillance and Management, Oil and Gas Reservoir Evaluation and Modeling, Drilling and Production Operation, Enhancement of Recovery, Oil and Gas Reservoir Exploration. The conference not only provided a platform to exchange experiences, but also promoted the advancement of scientific research in oil & gas exploration and production. The book is chiefly intended for industry experts, professors, researchers, senior engineers, and enterprise managers.

Author : Michael Prats
Publisher : Unknown
Page : 304 pages
File Size : 54,5 Mb
Release : 1982
Category : Thermal oil recovery
ISBN : STANFORD:36105032724044

Get Book

Thermal Recovery by Michael Prats Pdf

Author : Sergey Vyazovkin
Publisher : Springer
Page : 239 pages
File Size : 53,7 Mb
Release : 2015-03-18
Category : Science
ISBN : 9783319141756

Get Book

Isoconversional Kinetics of Thermally Stimulated Processes by Sergey Vyazovkin Pdf

The use of isoconversional kinetic methods for analysis of thermogravimetric and calorimetric data on thermally stimulated processes is quickly growing in popularity. The purpose of this book is to create the first comprehensive resource on the theory and applications of isoconversional methodology. The book introduces the reader to the kinetics of physical and chemical condensed phase processes that occur as a result of changing temperature and discusses how isoconversional analysis can provide important kinetic insights into them. The book will help the readers to develop a better understanding of the methodology, and promote its efficient usage and successful development.

Author : Nicolas Boyard
Publisher : John Wiley & Sons
Page : 464 pages
File Size : 44,9 Mb
Release : 2016-03-28
Category : Science
ISBN : 9781848217614

Get Book

Heat Transfer in Polymer Composite Materials by Nicolas Boyard Pdf

This book addresses general information, good practices and examples about thermo-physical properties, thermo-kinetic and thermo-mechanical couplings, instrumentation in thermal science, thermal optimization and infrared radiation.

Author : M.E. Brown
Publisher : Springer Science & Business Media
Page : 264 pages
File Size : 44,5 Mb
Release : 2006-04-11
Category : Technology & Engineering
ISBN : 9780306484049

Get Book

Introduction to Thermal Analysis by M.E. Brown Pdf

to Thermal Analysis Techniques and Applications Edited by Michael E. Brown Chemistry Department, Rhodes University, Grahamstown, South Africa KLUWER ACADEMIC PUBLISHERS NEW YORK, BOSTON, DORDRECHT, LONDON, MOSCOW eBook ISBN: 0-306-48404-8 Print ISBN: 1-4020-0472-9 ©2004 Kluwer Academic Publishers New York, Boston, Dordrecht, London, Moscow Print ©2001 Kluwer Academic Publishers Dordrecht All rights reserved No part of this eBook may be reproduced or transmitted in any form or by any means, electronic, mechanical, recording, or otherwise, without written consent from the Publisher Created in the United States of America Visit Kluwer Online at: http://kluweronline. com and Kluwer's eBookstore at: http://ebooks. kluweronline. com CONTENTS Preface to the First Edition, Chapman & Hall, London, 1988 ix About the First Edition of this Book x Preface to the Second Edition xi 1. INTRODUCTION 1. 1 Definition and History 1 1. 2 Thermal Analysis Instruments 4 References 11 2. THERMAL EVENTS 2. 1 Introduction 13 2. 2 The Solid State 13 2. 3 Reactions of Solids 14 2. 4 Decomposition of Solids 15 2. 5 Reaction with the Surrounding Atmosphere 16 2. 6 Solid-Solid Interactions 16 References 17 3. THERMOGRAVIMETRY (TG) Introduction 3. 1 19 3. 2 The Balance 19 3. 3 Heating the Sample 21 3. 4 The Atmosphere 24 3. 5 The Sample 26 3. 6 Temperature Measurement 26 3. 7 Temperature Control 28 Sample Controlled Thermal Analysis (SCTA) 29 3. 8 3. 9 Calibration 36 3. 10 Presentation of TG Data 37 3.

Author : James Sheng
Publisher : Gulf Professional Publishing
Page : 712 pages
File Size : 46,6 Mb
Release : 2013-04-10
Category : Science
ISBN : 9780123865465

Get Book

Enhanced Oil Recovery Field Case Studies by James Sheng Pdf

Enhanced Oil Recovery Field Case Studies bridges the gap between theory and practice in a range of real-world EOR settings. Areas covered include steam and polymer flooding, use of foam, in situ combustion, microorganisms, "smart water"-based EOR in carbonates and sandstones, and many more. Oil industry professionals know that the key to a successful enhanced oil recovery project lies in anticipating the differences between plans and the realities found in the field. This book aids that effort, providing valuable case studies from more than 250 EOR pilot and field applications in a variety of oil fields. The case studies cover practical problems, underlying theoretical and modeling methods, operational parameters, solutions and sensitivity studies, and performance optimization strategies, benefitting academicians and oil company practitioners alike. Strikes an ideal balance between theory and practice Focuses on practical problems, underlying theoretical and modeling methods, and operational parameters Designed for technical professionals, covering the fundamental as well as the advanced aspects of EOR

Author : Shurong Wang,Zhongyang Luo
Publisher : Walter de Gruyter GmbH & Co KG
Page : 445 pages
File Size : 50,8 Mb
Release : 2016-12-05
Category : Technology & Engineering
ISBN : 9783110386127

Get Book

Pyrolysis of Biomass by Shurong Wang,Zhongyang Luo Pdf

With the development of societies fossil energy is no longer the only energy resource, and increasing attention had been paid to alternative energy. Biomass is considered to be one of the alternatives due to efficiency and low cost. This book presents biomass pyrolysis behavior for three main components: Cellulose, Hemicellulose and Lignin, and discusses the influence of mineral salts , zeolite catalysts and metal oxide on their pyrolysis.

Author : David A. N. Ussiri,Rattan Lal
Publisher : Springer
Page : 549 pages
File Size : 49,6 Mb
Release : 2017-03-28
Category : Science
ISBN : 9783319538457

Get Book

Carbon Sequestration for Climate Change Mitigation and Adaptation by David A. N. Ussiri,Rattan Lal Pdf

This book provides an understanding of the role of human activities in accelerating change in global carbon cycling summarizes current knowledge of the contemporary carbon budget. Starting from the geological history, this volume follows a multidisciplinary approach to analyze the role of human activities in perturbing carbon cycling by quantifying changes in different reservoirs and fluxes of carbon with emphasis on the anthropogenic activities, especially after the industrial revolution. It covers the role of different mitigation options – natural ecological, engineered, and geoengineered processes as well as the emerging field of climate engineering in avoiding dangerous abrupt climate change. Although the targeted audience is the educators, students, researchers and scientific community, the simplified analysis and synthesis of current and up to date scientific literature makes the volume easier to understand and a tool policy makers can use to make an informed policy decisions.

Author : Charles Mansfield Earnest,ASTM Committee E-37 on Thermal Measurements
Publisher : ASTM International
Page : 298 pages
File Size : 55,9 Mb
Release : 1988
Category : Composite materials
ISBN : 9780803111776

Get Book

Compositional Analysis by Thermogravimetry by Charles Mansfield Earnest,ASTM Committee E-37 on Thermal Measurements Pdf

Author : David Albertovich Frank-Kamenetskii
Publisher : Princeton University Press
Page : 383 pages
File Size : 46,5 Mb
Release : 2015-12-08
Category : Science
ISBN : 9781400877195

Get Book

Diffusion and Heat Exchange in Chemical Kinetics by David Albertovich Frank-Kamenetskii Pdf

Frank-Kamenetskii, a leader in Russian science, was the first to define conditions for two stable operating regimes in chemical reactions, one controlled by chemical reactions, the other by diffusion processes. In this book he treats mathematically the subjects of reaction ignition, quenching, and periodic processes in chemical kinetics as found in flames, combustion of solids, and other chemical reactions. The book was translated from the Russian by the late N. Thou and edited by R. Wilhelm. Originally published in 1955. The Princeton Legacy Library uses the latest print-on-demand technology to again make available previously out-of-print books from the distinguished backlist of Princeton University Press. These editions preserve the original texts of these important books while presenting them in durable paperback and hardcover editions. The goal of the Princeton Legacy Library is to vastly increase access to the rich scholarly heritage found in the thousands of books published by Princeton University Press since its founding in 1905.

Author : Don W. Green,G. Paul Willhite
Publisher : Unknown
Page : 895 pages
File Size : 52,6 Mb
Release : 2018
Category : Secondary recovery of oil
ISBN : 161399494X

Get Book

Enhanced Oil Recovery by Don W. Green,G. Paul Willhite Pdf

Author : A. V. Bridgwater
Publisher : John Wiley & Sons
Page : 1744 pages
File Size : 50,8 Mb
Release : 2008-04-30
Category : Science
ISBN : 9780470694848

Get Book

Progress in Thermochemical Biomass Conversion by A. V. Bridgwater Pdf

This book is for chemical engineers, fuel technologists, agricultural engineers and chemists in the world-wide energy industry and in academic, research and government institutions. It provides a thorough review of, and entry to, the primary and review literature surrounding the subject. The authors are internationally recognised experts in their field and combine to provide both commercial relevance and academic rigour. Contributions are based on papers delivered to the Fifth International Conference sponsored by the IEA Bioenergy Agreement.