Download or read book Nanoparticle Dispersion Flow for Enhanced Oil Recovery Using Micromodels written by William Christopher Van Bramer and published by . This book was released on 2014 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: The injection of nanoparticles is a promising and novel approach to enhancing oil recovery in depleted fields. Nanoparticles have one dimension that is smaller than 100 nm and have many unique properties that are useful when it comes to oil recovery. Their small size and the ability to manipulate particle properties are a couple of the advantageous properties. The small size of nanoparticle allows them to easily pass through porous media. Manipulating nanoparticle properties allows for wettability modifications or controlled release of chemicals at a precise location in the formation. Injection of nanoparticle dispersions for secondary or tertiary recovery in corefloods has yielded positive results. Field tests using nanoparticles have also yielded positive results with increased oil recovery. While there has been a sizable amount of work related to corefloods, limited investigation has been reported using micromodels. Micromodels are valuable because they allow for pore scale viewing of the oil recovery, which is not possible with corefloods. In this research both polydimethylsiloxane (PDMS) and glass microfluidic devices were fabricated to test the EOR potential of different types of nanoparticles. Much of the work described in this thesis involved the use of a dead-end pore geometry to trap oil. First the pore space was filled with oil and then waterflooded. This left some oil trapped in the dead-end pores. PDMS micromodels proved difficult to trap oil in the dead-end pores; because of this glass micromodels were tested. After trapping oil, a nanoparticle dispersion was injected into the pore space to test the potential of the dispersion to reduce the residual oil saturation in the dead-end pores. The nanoparticle dispersion was injected at different flow rates (1 [mu]l/hr to 50 [mu]l/hr) to test the effect of flow rate on residual oil recovery.

Download or read book Experimental Investigation of Nanoparticle Enhanced Oil Recovery Techniques Using Micromodels written by Ayub Khezrnejad and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanotechnology has found widespread application in a diverse range of industries. Researchers are now investigating whether nanotechnology can be applied to enhance oil recovery. The goal of enhanced oil recovery is to manipulate the fluid-fluid properties (interfacial tension, viscosity), and fluid-rock properties (contact angle, relative permeability) to improve pore scale recovery efficiency. In this study, nanofluids were prepared and injected into micromodels to study their effectiveness on oil recovery. Silicon oxide and aluminum oxide nanoparticles were used. Nanofluid viscosity and interfacial tension between nanofluid and oil was measured and modeled. Response Surface Methodology (RSM) was used to investigate the effect of the factors and their interactions. Fluid characterization data shows that nanoparticles are effective in both interfacial tension reduction and viscosity enhancement. The results from the micromodel studies indicate that adding a small amount of nanoparticles to the brine can enhance oil recovery by approximately 10 % - 20 %.

Download or read book Micromodel Evaluation of Nanoparticles for Enhanced Oil Recovery written by Wafaa Al-Shatty and published by . This book was released on 2022-04-04 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: Enhanced oil recovery (EOR) is a tertiary process whereby oil is extracted from an oil field that could not otherwise be extracted. As such EOR can extract 30%-60% of a reservoir's oil in place (OIP) compared to 20% to 40% using primary and secondary methods. While there is a clear economical advantage (depending on the current price of oil), there is also an environmental impact of EOR. On the positive side, EOR can be used in place of drilling additional wells, while on the other hand EOR results in large quantities of produced water which must be correctly disposed of or treated. One of the reasons that not all the reservoir oil is readily recovered without EOR is that there is significant surface tension between the oil and the reservoir rock. The injection of various chemicals, usually as dilute solutions, have been used to aid mobility through the reduction in surface tension and interfacial tension. Although dilute solutions of surfactants and polymers have been deployed commercially, there is a desire to develop both more efficient chemicals as well as those with reduced environmental impact. One such class of potential EOR additive are nanomaterials (sized between 1 and 100 nm), due to their high surface-to-volume ratio, wettability control, and interfacial tension reduction. The use of nanomaterials to EOR is a very attractive, yet challenging task, because prior to deployment in a reservoir it is necessary to gain an understanding of the relative performance of nanomaterials as compared to traditional methods. Although core flood methods offer a quantitative value for oil recovery, they do not provide detailed insight into mechanism. Micromodels have been used as a flexible method for determining the efficacy of nanomaterials as well as combinations of nanomaterials with surfactants and polymers. This book is aimed at providing an overview of methods whereby nanomaterials can be investigated with regard to EOR.

Download or read book Chemical Enhanced Oil Recovery written by Patrizio Raffa and published by Walter de Gruyter GmbH & Co KG. This book was released on 2019-07-22 with total page 277 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book aims at presenting, describing, and summarizing the latest advances in polymer flooding regarding the chemical synthesis of the EOR agents and the numerical simulation of compositional models in porous media, including a description of the possible applications of nanotechnology acting as a booster of traditional chemical EOR processes. A large part of the world economy depends nowadays on non-renewable energy sources, most of them of fossil origin. Though the search for and the development of newer, greener, and more sustainable sources have been going on for the last decades, humanity is still fossil-fuel dependent. Primary and secondary oil recovery techniques merely produce up to a half of the Original Oil In Place. Enhanced Oil Recovery (EOR) processes are aimed at further increasing this value. Among these, chemical EOR techniques (including polymer flooding) present a great potential in low- and medium-viscosity oilfields. • Describes recent advances in chemical enhanced oil recovery. • Contains detailed description of polymer flooding and nanotechnology as promising boosting tools for EOR. • Includes both experimental and theoretical studies. About the Authors Patrizio Raffa is Assistant Professor at the University of Groningen. He focuses on design and synthesis of new polymeric materials optimized for industrial applications such as EOR, coatings and smart materials. He (co)authored about 40 articles in peer reviewed journals. Pablo Druetta works as lecturer at the University of Groningen (RUG) and as engineering consultant. He received his Ph.D. from RUG in 2018 and has been teaching at a graduate level for 15 years. His research focus lies on computational fluid dynamics (CFD).

Download or read book Chemical Nanofluids in Enhanced Oil Recovery written by Rahul Saha and published by CRC Press. This book was released on 2021-09-14 with total page 137 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sustainable world economy requires a steady supply of crude oil without any production constraints. Thus, the ever-increasing energy demand of the entire world can be mostly met through the enhanced production from crude oil from existing reservoirs. With the fact that newer reservoirs with large quantities of crude oil could not be explored at a faster pace, it will be inevitable to produce the crude oil from matured reservoirs at an affordable cost. Among alternate technologies, the chemical enhanced oil recovery (EOR) technique has promising potential to recover residual oil from matured reservoirs being subjected to primary and secondary water flooding operations. Due to pertinent complex phenomena that often have a combinatorial role and influence, the implementation of chemical EOR schemes such as alkali/surfactant/polymer flooding and their combinations necessitates upon a fundamental understanding of the potential mechanisms and their influences upon one another and desired response variables. Addressing these issues, the book attempts to provide useful screening criteria, guidelines, and rules of thumb for the identification of process parametric sets (including reservoir characteristics) and response characteristics (such as IFT, adsorption etc.,) that favor alternate chemical EOR systems. Finally, the book highlights the relevance of nanofluid/nanoparticle for conventional and unconventional reservoirs and serves as a needful resource to understand the emerging oil recovery technology. Overall, the volume will be of greater relevance for practicing engineers and consultants that wish to accelerate on field applications of chemical and nano-fluid EOR systems. Further, to those budding engineers that wish to improvise upon their technical know-how, the book will serve as a much-needed repository.

Download or read book Micro nano scale Simulation of Multiphase Flow Behaviours for Enhanced Oil Recovery Applications written by Jin Zhao and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Practical Nanotechnology for Petroleum Engineers written by Chun Huh and published by CRC Press. This book was released on 2019-03-04 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a concise but well-organized introduction to nanotechnology (NT) which the upstream oil industry is now vigorously adapting to develop its own unique applications for improved oilfield operations and, oil and gas production. Its reader will learn nanotechnology fundamentals, be introduced to important NT products and applications from other industries and learn about the current state of development of various NT applications in the upstream oil industry, which include innovative use of nanoparticles for enhanced oil recovery; drilling and completions; reservoir sensing; and production operations and flow assurance. Key Features Exclusive title on potential of nanoparticle-based agents and interventions for improving myriad of oilfield operations Unique guide for nanotechnology applications developers and users for oil and gas production Introduces nanotechnology for oil and gas managers and engineers Includes research data discussions relevant to field Offers a practical applications-oriented approach

Download or read book Fabrication of Micro nanofluidic Models and Their Applications for Enhanced Oil Recovery Mechanism Study written by Yandong Zhang and published by . This book was released on 2020 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Micro-/nanofluidic model, as a potential powerful tool, has been used for decades for investigating fluid flow at pore-scale in energy field. It is still increasingly imperative nowadays to use different micromodels to direct observe pore-level fluid flow and analyze mechanisms of different enhanced oil recovery methods. In this work, three main tasks including three dimensional micromodels (1D,2D,3D) are proposed to fabricate and use for investigating different mechanisms of different enhanced oil recovery methods. For 1D capillary tube micromodel, we fabricate and use it to investigate the dynamics of a trapped oil droplet under seismic vibration. Seismic stimulation is a promising technology aimed to mobilize the entrapped non-wetting fluids in the subsurface. The applications include enhanced oil recovery or CO2 sequestration. For 2D micromodel, we fabricate to mimic unconventional dual-porosity shale-like tight porous media and investigate the fluid flow behavior under such conditions. Unconventional oil reservoirs have become significant sources of petroleum production and have even better potential in the future. Many shale oil systems consist of nanoscale pores and micro-scale fractures that are significantly smaller than those from conventional reservoirs. Therefore, it is increasingly important to investigate fluid flow behaviors in nanoscale channels. For 3D micromodel, we packed and sintered glass beads into quartz tubes to mimic 3D porous media. Because of difficulties for direct visualization, almost all the micromodels available are two-dimensional models which cannot represent real interconnected pore network of a real reservoir porous media. Thus, we build fully transparent 3D models to direct visualize and investigate the in-situ emulsification mechanism for nanogel flooding"--Abstract, page iv.

Download or read book Enhanced Oil Recovery Processes written by Ariffin Samsuri and published by BoD – Books on Demand. This book was released on 2019-12-18 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt: Concerned with production decline, shortages of new oil reserves, and increasing world energy demand, the oil sector continues to search for economic and efficient techniques to enhance their oil recovery from the existing oil field using several enhanced oil recovery techniques (EOR)methods. Despite its highefficiency, widely acclaimed potentials, and limitations, the Low Salinity Water Flooding (LSWF), hybrid, and nanotechnology applications have gained vast interest with promising future to increase ultimate oil recovery, tackle operational challenges, reduce environmental damage, and allow the highest feasible recoveries with lower production costs. This synergistic combination has opened new routes for novel materials with fascinating properties. This book aims to provide an overview of EOR technology such as LSWF, hybrid, and nanotechnology applications in EOR processes.

Download or read book Numerical Modeling of Nanoparticle Transport in Porous Media written by Mohamed F. El-Amin and published by Elsevier. This book was released on 2023-06-17 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: Numerical Modeling of Nanoparticle Transport in Porous Media: MATLAB/PYTHON Approach focuses on modeling and numerical aspects of nanoparticle transport within single- and two-phase flow in porous media. The book discusses modeling development, dimensional analysis, numerical solutions and convergence analysis. Actual types of porous media have been considered, including heterogeneous, fractured, and anisotropic. Moreover, different interactions with nanoparticles are studied, such as magnetic nanoparticles, ferrofluids and polymers. Finally, several machine learning techniques are implemented to predict nanoparticle transport in porous media. This book provides a complete full reference in mathematical modeling and numerical aspects of nanoparticle transport in porous media. It is an important reference source for engineers, mathematicians, and materials scientists who are looking to increase their understanding of modeling, simulation, and analysis at the nanoscale. Explains the major simulation models and numerical techniques used for predicting nanoscale transport phenomena Provides MATLAB codes for most of the numerical simulation and Python codes for machine learning calculations Uses examples and results to illustrate each model type to the reader Assesses major application areas for each model type

Download or read book Application of Nanoparticles for Oil Recovery written by Ole Torsaeter and published by Mdpi AG. This book was released on 2021-06-30 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: The oil industry has, in the last decade, seen successful applications of nanotechnology in completion systems, completion fluids, drilling fluids, and in improvements of well constructions, equipment, and procedures. However, very few full field applications of nanoparticles as an additive to injection fluids for enhanced oil recovery (EOR) have been reported. Many types of chemical enhanced oil recovery methods have been used in fields all over the world for many decades and have resulted in higher recovery, but the projects have very o6en not been economic. Therefore, the oil industry is searching for a more efficient enhanced oil recovery method. Based on the success of nanotechnology in various areas of the oil industry, nanoparticles have been extensively studied as an additive in injection fluids for EOR. This book includes a selection of research articles on the use of nanoparticles for EOR application. The articles are discussing nanoparticles as additive in waterflooding and surfactant flooding, stability and wettability alteration ability of nanoparticles and nanoparticle stabilized foam for CO2-EOR. The book also includes articles on nanoparticles as an additive in biopolymer flooding and studies on the use of nanocellulose as a method to increase the viscosity of injection water. Mathematical models of the injection of nanoparticle-polymer solutions are also presented.

Download or read book Enhanced Heavy Oil Recovery by Emulsification with Injected Nanoparticles written by Arturo Rey Martinez Cedillo and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In-situ oil-in-water emulsion generation, using modified silica hydrophilic nanoparticles as emulsifier, has been proposed as an enhanced oil recovery process. The nanoparticles are injected as an aqueous dispersion; its hydrophilic character allows emulsifying the immobile heavy oil, and transports it out of the reservoir as a low viscosity fluid. Generating the emulsions in the reservoir was suggested because it offers numerous advantages. The first advantage is low injectivity pressures due to the low dispersion viscosity. Also, the size of nanoparticles (5 nm) yields a better emulsion stability. Furthermore, complex injection facilities are not required, which reduces operational costs. In this research, 12 nanoparticle dispersions were created using nanoparticle concentrations of 0.5, 2.0 and 5.0 wt%, deionized water or brine made with 0.5 wt% of Sodium Chloride. These dispersions were tested to investigate their ability to generate oil-in-water emulsions. Emulsion generation experiments included interfacial tension measurements between heavy oil and nanoparticle dispersions, microscopy analysis to determine the amount of emulsion generated, and emulsion viscosity measurements. Results obtained from these experiments indicated that the nanoparticles lead to a reduction of the interfacial tension of the heavy oil and the dispersion. In addition, the presence of Sodium Chloride in the dispersion reduced still more of that interfacial tension, generating the largest amount of emulsions. Six core flooding experiments were conducted to study the effect of the nanoparticle dispersion flooding on the final recovery under different settings. Two types of core plugs with permeabilities of 150 mD and 2,300 mD, and two heavy oils with viscosities of 600 cP and 3500 cP were combined to establish the original experiment conditions. Tertiary heavy oil recoveries ranged from 20% to 64 % of OOIP were obtained. The results throughout these experiments suggest that if the reservoir conditions (e.g. permeability, porosity and oil viscosity) are adequate, the nanoparticle dispersion flooding may be a reliable alternative to the thermal recovery processes. The electronic version of this dissertation is accessible from http://hdl.handle.net/1969.1/151854

Download or read book Microvisual Investigations to Assess and Understand Enhanced Oil Recovery Processes Using Etched Silicon Micromodels written by Markus Buchgraber and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Conventional oil production is in decline and demand for enhanced oil recovery (EOR) is increasing. Highly calibrated simulation models are built as decision tools for investments and further field developments. Because EOR reservoir mechanisms are more complicated than primary and secondary recovery mechanisms, a more detailed physical understanding is required to design accurate simulation models. EOR flow processes need to be investigated, represented accurately, and calibrated at multiple scales before testing on a field-wide project. Experimental results at different scales deliver the basic construct of each simulation model. Examples are micro-scale pore size phenomena observations for pore network simulations and core-scale for material balance calculations. This study focuses on the microscale investigation of multiphase fluid flow using etched-silicon micromodels to assess the flow behavior on a pore scale. Micromodels have the pore network patterns of a porous medium etched to a silicon wafer and hence are representative of the two dimensional structure of the porous medium. The patterns used in the construction of the porous medium may be prepared from thin sections of any given rock or reservoir type. They represent the medium or, in several cases, are geometrically constructed as a series of repeatable simple or complex geometric figure aggregates. Geometrical and topological properties and pore roughness are close to the original core sample. The various micromodel pore networks (sandstone, unconsolidated sandstone, carbonate and fracture models) are tested with different fluid and fluid pairs and pore scale behavior like sweep efficiency, snap off, micro scale saturations and so on are qualitatively described and characterized. Measured parameters and descriptions aid simulation development to create a fully functional physical model. Experiments reported in this thesis are relevant to a variety of EOR topics: a.)gas trapping and dissolution of CO2 water systems during carbon sequestration or a WAG EOR process, b.)gas exsolution behavior of supersaturated CO2 water when traveling from a high to a a low pressure region, c.) front stability and micro displacement efficiency of unstable displacement process during gas injection, d.) foam injection in fractured reservoirs to control mobility after premature gas breakthrough, e.) rheological behavior of polymer solution at near critical conditions in porous medium and in fractures, and f.) multiphase flow behavior in an intermediate wet dual porosity system similar to an ARAB-D carbonate rock. Understanding the immobilization and trapping of carbon dioxide is not only crucial in estimating storage capacity and security during CCS but also an important factor to operate a CO2 EOR flood in the most efficient manner. Residual and dissolution trapping are time dependent and need to be better understood for better predictions. A set of CO2-water imbibition experiments were conducted in micromodels whose homogeneous pore space is geometrically and topologically similar to Berea sandstone to investigate the pore-scale events of residual and capillary trapping. Microvisual data, photographs and video footage, describes the trapping mechanism and, especially, the disconnection and shrinkage of the CO2 phase in various phase conditions. Results show that, depending on the flow rate of the imbibing water, different trapping mechanisms are observed. Lower flow rates, comparable to the trailing edge of a CO2 plume, lead to more snap-off events. During snap off, the wetting fluid swells at the pore walls until the critical capillary pressure is reached, where the interface collapses. The non wetting fluid is then forced into the pore and the wetting fluid fills the pore throat, resulting in greater trapped residual saturation. Rates comparable to the near wellbore area during enhanced sequestration showed sweep out displacement of gas bubbles. Sweep out is characterized when the interface does not collapse and instead the whole non wetting phase is displaced by the wetting phase leaving no trapped saturation behind, and greater dissolution that ultimately leads to very low or zero gas saturations. Furthermore, complete dissolution events showed that homogeneous as well as heterogeneous dissolution occurs. Whereas the latter is subdivided into microbubble formation and dissolution on crevices or pore roughness, the former occurs without the influence of pore walls. After sequestration, CO2 concentrations of 50 g/l or more may to be found in saline aquifers. Although dissolved CO2 does not bear an obvious risk there are plausible mechanisms by which the CO2 laden brine could be transported to a shallower depth, where the CO2 would come out of solution/exsolve, and form a mobile CO2 gas phase. This significant mechanism for drinking water contamination has received little attention, and there are basic science and reservoir engineering questions that need to be addressed in order to reduce risks to underground drinking water supplies. This study investigates the conditions under which dissolved CO2 brines can impact drinking water aquifers. It develops a fundamental understanding of the fate of dissolved and exsolving CO2 at pore scale, called nucleation using micromodel experiments. Exsolution experiments showed similar pore scale events as in the dissolution study. Bubble nucleation was observed for three different types homogenous and heterogeneous type I and type II. The injection of CO2 into saline aquifers exhibits a strong unstable displacement due to the viscosity difference of the water and the CO2 phase that leads to unfavorable mobility ratios (M> 1). Although the subsurface flow of different fluids has been investigated in a large scale in the oil and gas industry, the characteristics of the water-CO2 fluid pair that lead to highly unstable fluid fronts is still not fully understood. So far, most modeling of carbon capture and sequestration (CCS) relies on the linear displacement theory from Buckley and Leverett. Based on In this work, laboratory experiments using a wide range of mobility and capillary numbers to show displacement fronts of stable and unstable drainage process are reported. Experiments were conducted in etched silicon micromodels with Berea sandstone-like pore structures and geometry. Experimental data in the form of macroscale front displacement videos and micro scale saturation pictures were collected and analyzed. Drainage results showed that there was an increase in finger number and finger size with an increase in capillary number. Capillary number did not influence areal sweep efficiency but showed significant effects on micro saturation where low capillary numbers led to snap off and small pores left undrained whereas large capillary numbers swept out small and large pore structures leaving less wetting saturation behind. Fractal analyses were used to evaluate unstable displacement fronts. Results showed that the average saturation does not scale with wave speed. Moreover the displacement pattern follows a fractal pattern. Foam as a gas-mobility control agent is successful in enhanced oil recovery processes. In fractured reservoirs, foam acts as a blocking agent slowing and redirecting the transport of the aqueous phase in high transmissibility fractures. Foam allows more time for the liquid/foamer agent to imbibe into the matrix blocks and drain remaining oil. In this work, the behavior of foam flow in fractures at various foam qualities and liquid and gas velocities is investigated. Laboratory experiments with different fracture replicates etched in silicon micromodels were used. Different micromodel fractures (smooth surfaces, rough surfaces and different apertures) were used to observe pre-generated foam in terms of texture, pressure drop and flow behavior. Mobility reduction factors for a wide range of foam qualities and flow rates were analyzed. Measured pressure drops increase linearly with an increase in foam quality up to 90%. At qualities greater than 90%, mobility reduction is only slightly reduced further. In general mobility reduction factor (MRF) of 10-400 times were measured for low to high quality foams respectively. Additionally, video footage of foam at micro and macro scale is used to tie rheology to bubble shape and size. Polymer flooding has the potential to recover bypassed oil faster and therefore boosts the economics significantly in an EOR project. The success, however, depends on the injectivity of polymer solution volumes. Injection into porous media at conditions above a critical rate may lead to mechanical degradation of the polymer in solution resulting in a loss of viscosity. The resulting increase in mobility ratio may result in an uneconomical project. Therefore, the investigation of the rheological behavior of polymer solutions at different rate conditions is critical in designing a polymer flood project. Micromodel experiments were used to assess degradation of polymer solutions in fractures as well as in porous media. Only minor, mechanical degradation was found. Polymer solutions exhibit, depending on fracture roughness, shear thinning behavior. In contrast, polymers exhibit shear thickening behavior when flowing through porous media up to a factor 10 when comparing with an equivalent reservoir shear rate in the rheometer. In addition results showed that plugging, that leads to loss of injectivity, can be a critical issue in polymer injection. Currently around 6.25% of the world oil production are delivered from the Ghawar field in Saudi Arabia. The majority of the estimated 100 billion barrels of oil in place are trapped in an Arab-D carbonate formation. The creation and testing of an etched-silicon micromodel that has the features and characteristics of a dual porosity pore system such as might be found in a Arab-D carbonate rock was investig ...

Download or read book Fluids in Porous Media written by Henk Huinink and published by Morgan & Claypool Publishers. This book was released on 2016-09-06 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces the reader into the field of the physics of processes occurring in porous media. It targets Master and PhD students who need to gain fundamental understanding the impact of confinement on transport and phase change processes. The book gives brief overviews of topics like thermodynamics, capillarity and fluid mechanics in order to launch the reader smoothly into the realm of porous media. In-depth discussions are given of phase change phenomena in porous media, single phase flow, unsaturated flow and multiphase flow. In order to make the topics concrete the book contains numerous example calculations. Further, as much experimental data as possible is plugged in to give the reader the ability to quantify phenomena.

Download or read book Surface Phenomena in Enhanced Oil Recovery written by Shah and published by Springer Science & Business Media. This book was released on 2013-03-14 with total page 876 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is with great pleasure and satisfaction that I present to the international scientific community this collection of papers presented at the symposium on Surface Phenomena in Enhanced Oil Recovery held at Stockholm, Sweden, during August 20-25, 1979. It has been an exciting and exhausting experience to edit the papers included in this volume. The proceedings cover six major areas of research related to chemical flooding processes for enhanced oil recovery, namely, 1) Fundamental aspects of the oil displacement process, 2) Micro structure of surfactant systems, 3) Emulsion rheology and oil dis placement mechanisms, 4) Wettability and oil displacement mecha nisms, 5) Adsorption, clays and chemical loss mechanisms, and 6) Polymer rheology and surfactant-polymer interactions. This book also includes two invited review papers, namely, "Research on Enhanced Oil Recovery: Past, Present and Future," and "Formation and Properties of Micelles and Microemulsions" by Professor J. J. Taber and Professor H. F. Eicke respectively. This symposium volume reflects the current state-of-art and our understanding of various surface phenomena in enhanced oil recovery processes. The participation by researchers from various countries in this symposium reflects the global interest in this area of research and the international effort to develop che science and technology of enhanced oil recovery processes.

Download or read book Modern Chemical Enhanced Oil Recovery written by James J.Sheng and published by Gulf Professional Publishing. This book was released on 2010-11-25 with total page 648 pages. Available in PDF, EPUB and Kindle. Book excerpt: Crude oil development and production in U.S. oil reservoirs can include up to three distinct phases: primary, secondary, and tertiary (or enhanced) recovery. During primary recovery, the natural pressure of the reservoir or gravity drive oil into the wellbore, combined with artificial lift techniques (such as pumps) which bring the oil to the surface. But only about 10 percent of a reservoir's original oil in place is typically produced during primary recovery. Secondary recovery techniques to the field's productive life generally by injecting water or gas to displace oil and drive it to a production wellbore, resulting in the recovery of 20 to 40 percent of the original oil in place. In the past two decades, major oil companies and research organizations have conducted extensive theoretical and laboratory EOR (enhanced oil recovery) researches, to include validating pilot and field trials relevant to much needed domestic commercial application, while western countries had terminated such endeavours almost completely due to low oil prices. In recent years, oil demand has soared and now these operations have become more desirable. This book is about the recent developments in the area as well as the technology for enhancing oil recovery. The book provides important case studies related to over one hundred EOR pilot and field applications in a variety of oil fields. These case studies focus on practical problems, underlying theoretical and modelling methods, operational parameters (e.g., injected chemical concentration, slug sizes, flooding schemes and well spacing), solutions and sensitivity studies, and performance optimization strategies. The book strikes an ideal balance between theory and practice, and would be invaluable to academicians and oil company practitioners alike. - Updated chemical EOR fundamentals providing clear picture of fundamental concepts - Practical cases with problems and solutions providing practical analogues and experiences - Actual data regarding ranges of operation parameters providing initial design parameters - Step-by-step calculation examples providing practical engineers with convenient procedures

Download or read book A Mechanism Study of Nanoparticles for Enhanced Oil Recovery written by Renfeng Jiang and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The application of nanotechnology in enhanced oil recovery (EOR) is emerging because nanoparticles have the potential to alter rock properties like wettability and fluid properties such as interfacial tension (IFT). In addition, a newly-proposed theory of the structural disjoining pressure (SDP) has become popular in the scientific community as well. However, a systematic literature review shows that ambiguity exists regarding which components in nanofluid play the role of changing wettability and interfacial tension (IFT). In addition, there are only a limited number of numerical and experimental studies to investigate the theory of the structural disjoining pressure (SDP), none of which can strictly confirm the theory. This motivates us to study these potential candidates of the mechanisms of nano-enhanced oil recovery (nano-EOR). We first conducted experiments using the contact angle goniometer to measure the contact angle and the interfacial tension (IFT) for various nanofluid compositions and the results showed that the addition of bare silica nanoparticles could reduce the contact angle. Specifically, a reduction in nanoparticle size and an increase in nanofluid concentration could further reduce the contact angle. However, bare nanoparticles did not change the interfacial tension (IFT). In order to investigate the theory of the structural disjoining pressure (SDP), we extended the model with a configuration that simulates the real case of the detachment of an oil droplet. The results showed that four conditions favor the spreading of the nanofluid on the substrate and the detachment of the oil droplet from the substrate to which it attached due to the structural disjoining pressure (SDP). These conditions include a high nanofluid concentration, a small nanoparticle size, a small contact angle of the nanofluid/oil/substrate system looking from the nanofluid phase, and a large oil droplet. Three imaging experiments were conducted using environmental scanning electron microscopy (ESEM) and dynamic fluid-film interferometry (DFI) to verify the theory of nanofluid spreading due to the structural disjoining pressure (SDP). ESEM imaging experiments showed the result of a single layer of nanoparticles but could not eliminate the effect of evaporation. Combining the ESEM images with the results from DFI in a liquid cell eliminated the evaporation effect and confirmed that nanoparticles are capable of spreading over the substrate in a thin film that is composed of one single layer of nanoparticles. Moreover, an experiment into the extension of the coffee ring effect showed the discovery of a new coffee ring pattern. Finally, we conducted a nanofluid flooding experiment using carbonate rocks. It was able to isolate the effect of the two confirmed mechanisms on the oil recovery rate at core-scale and tested the potential of nano-enhanced oil recovery (nano-EOR) at core-scale. We determined that an increase in oil recovery of 6% was due to the wettability alteration and another 6% increase in oil recovery was due to the mechanism of the structural disjoining pressure (SDP) for our low permeable carbonate core.