Download or read book Compositional Simulation of the In Situ Combustion Process written by Mohd. Nawi Derahman and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Two dimensional Compositional Simulation of the in Situ Combustion Process written by M. N. Derahman and published by . This book was released on 1989 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Simulation of IN SITU Combustion Process Based on Parametric Study written by Mizbauddin Mohammed and published by LAP Lambert Academic Publishing. This book was released on 2014-03-07 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt: The main objective of this research work is to carry out the laboratory study on wet in situ combustion by using combustion tube to evaluate how the target X field core, oil will respond to combustion, generation of flue gases and to determine the engineering parameters of combustion etc. Objective of present work is to carry out simulation of one dimensional combustion tube using CMG STARS to validate simulator thermogram profile with experimental thermogram profile. The feasibility of in situ combustion technique primarily depends on the oxidation characteristics of candidate reservoir oil eg: the sustainability of the ignition front during the course of process. To understand and determine the feasibility of its application to a given reservoir it's necessary to understand the oxidation behavior of the crude oil, the effect of water on combustion parameters and the effect of combustion front on produced liquid.
Download or read book Analysis and Development of Algorithms for Fully Compositional Thermal and Reactive Numerical Simulation of In situ Combustion at Laboratory Scale written by Matthias Alexis Cremon and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In this work, we study the numerical simulation of computational, thermal and reactive flow in porous media. We built, tested and verified a robust numerical framework to obtain solutions of the coupled and non-linear system of partial differential equations. We illustrate that some of the models typically used in isothermal simulations need to be adapted in the presence of thermal effects. Our cases are largely impacted by the evaporation and condensation of components, and we demonstrate that lumping has a strong influence on the accuracy of the solutions. Aggressive lumping of the heavy components results in premature evaporation and an overestimation of the recovery. We designed a new multi-level delumping method suitable to thermal recovery processes and were able to lower the error made in the phase behavior calculations by an order of magnitude. Finally, we propose a new family of multi-stage preconditioners dedicated to thermal and reactive cases, reducing the number of iterations of a GMRES linear solver by 40-85% compared to the usual CPR method. The new preconditioners exhibit little to no sensitivity to the thermal regime (advection or diffusion dominated).
Download or read book One dimensional Simulation of the in Situ Combustion Process written by Barry M. Rubin and published by . This book was released on 1979 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book In situ Combustion ISC Processes written by Mahmoud Al-Shamali and published by . This book was released on 1993 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Experimental Investigation and High Resolution Simulation of In Situ Combustion Processes written by and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This final technical report describes work performed for the project 'Experimental Investigation and High Resolution Numerical Simulator of In-Situ Combustion Processes', DE-FC26-03NT15405. In summary, this work improved our understanding of in-situ combustion (ISC) process physics and oil recovery. This understanding was translated into improved conceptual models and a suite of software algorithms that extended predictive capabilities. We pursued experimental, theoretical, and numerical tasks during the performance period. The specific project objectives were (i) identification, experimentally, of chemical additives/injectants that improve combustion performance and delineation of the physics of improved performance, (ii) establishment of a benchmark one-dimensional, experimental data set for verification of in-situ combustion dynamics computed by simulators, (iii) develop improved numerical methods that can be used to describe in-situ combustion more accurately, and (iv) to lay the underpinnings of a highly efficient, 3D, in-situ combustion simulator using adaptive mesh refinement techniques and parallelization. We believe that project goals were met and exceeded as discussed.
Download or read book Measurement of In situ Combustion Reaction Kinetics with High Fidelity and Consistent Reaction Upscaling for Reservoir Simulation written by Mohammad Bazargan and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Experimental Investigation and High Resolution Simulator of In Situ Combustion Processes written by Anthony R. Kovscek and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Accurate simulation of in-situ combustion processes is computationally very challenging because the spatial and temporal scales over which the combustion process takes place are very small. In this current and thirteenth report, we report on our continuing development of a Virtual Kinetic Cell model and our continuing experimental program.
Download or read book EXPERIMENTAL INVESTIGATION AND HIGH RESOLUTION SIMULATOR OF IN SITU COMBUSTION PROCESSES written by and published by . This book was released on 2005 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: Accurate simulation of in-situ combustion processes is computationally very challenging because the spatial and temporal scales over which the combustion process takes place are very small. In this sixth quarter of our DoE funded research, we continued the development of our new simulation tool which is based on an efficient Cartesian Adaptive Mesh Refinement technique. This methodology allows much higher grid densities to be used near typical fronts than current simulators. We improved the upscaling strategy on these grids, and derived an effective way to generate upscaled permeabilities that preserve local fluxes. We have started more in-depth research into splitting methods for stiff PDEs such as those found in in-situ combustion simulation. We will report on these new developments extensively in the next quarterly report. This quarterly report, we focus on experimental work. On the experimental side, we have fleshed out a mechanism of improved in-situ combustion with aqueous metallic salts using scanning electron microscopy (SEM) and the transport phenomenon of such additives through porous media. Based on the observations from SEM analysis, we propose cation exchange of metallic salts with clay as a mechanism to create activated sites that enhance combustion reactions between oil and oxygen. Moreover, the empirical ranking of the success of metallic ions as catalytic additives for in-situ combustion is interpreted as originating from three factors: cation replacing power, distribution of metallic additive adsorption sites, and cation catalytic power for oxidation and cracking of hydrocarbon.
Download or read book Efficient Simulation of Thermal Enhanced Oil Recovery Processes written by Zhouyuan Zhu and published by Stanford University. This book was released on 2011 with total page 237 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Proceedings written by and published by . This book was released on 1996 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Mathematics of Reservoir Simulation written by Richard E. Ewing and published by SIAM. This book was released on 2014-12-01 with total page 195 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the state of the art of the mathematical theory and numerical analysis of imaging. Some of the applications covered in the book include computerized tomography, magnetic resonance imaging, emission tomography, electron microscopy, ultrasound transmission tomography, industrial tomography, seismic tomography, impedance tomography, and NIR imaging.
Download or read book Direct Incorporation of Laboratory Data for Simulation of In situ Combustion Dynamics written by Olufolake Ogunbanwo and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In-situ combustion, ISC, is a thermal enhanced oil recovery technique often numerically modeled using a set of non-linear transport equations, combined with Arrhenius rate laws to describe the reaction kinetics of crude oil oxidation. The Arrhenius rate reaction equations are laborious to construct, dependent on the researcher, and computationally expensive to integrate. The greater the number of reactions defined, the larger the number of parameters that need to be specified. As a result, the ISC numerical model for any given oil is a non-unique complex model that can be highly multivariate. This work presents a nonArrhenius technique for predicting the reaction dynamics during ISC independent of the heating rate. Vital laboratory data from ramped temperature oxidation kinetic cell experiments, depicting the combustion chemistry, are directly used to account for the appearance and disappearance of reacting species. The extent of the global reaction taking place is mapped uniquely to an overall reaction rate at any given temperature. This mapping is tabulated and graphed based on the isoconversional principle for each reacting species. The tables are then incorporated into the mass and energy conservation system of equations for predicting the underlying combustion kinetics. The robustness of this method is compared to lab scale results from a conventional thermal simulator using Arrhenius based reaction rate laws and laboratory experiments. This kinetics prediction method proposed for ISC processes is beneficial because it predicts the rate at which oil and oxygen are consumed and the production of the carbon oxides in a timely and expedient manner. The turnaround time from experimental data acquisition to predictive model development is reduced. The number of free parameters required to match experimental results is also minimal because the tabulated kinetics data are unique and directly enforced.
Download or read book SPE Reprint Series written by and published by . This book was released on 1987 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fossil Energy Update written by and published by . This book was released on 1977 with total page 748 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book In situ Combustion Simulation in Moco Zone Reservoir California written by Chai Yong Tan and published by . This book was released on 2010 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
