Download or read book Effects of Temperature and Heavy Oil Viscosity on Foamy Oil Flow in Porous Media written by Mingyi Wu and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: With vast potential reserves of heavy oil, the research on heavy oil has been the hottest topic over the decades. Foamy oil flow occurs in primary production of heavy oil reservoirs with unexpected high oil recovery factor. Studying on foamy oil mechanisms and flow behaviors helps enhancing oil recovery. Lots of experimental researches have been conducted to investigate on improving foamy oil flow efficiency. Pressure depletion rate has been proven to be one of the most significant parameters that affects foamy oil flow. However, the other factors that influence foamy oil such as reservoir temperature, oil viscosity, oil composition, etc. are not fully understood. Therefore, it is of great importance to study the influence of temperatures and oil viscosity on foamy oil flow. In this study, two types of experiment are carried out: (1) the sand-pack pressure depletion test under different temperatures; (2) sand-pack pressure depletion test with different viscous oils. In the first series of experiment, four different temperatures (20°C, 30°C, 40°C, 50°C) are selected to exam the production performance. In the second set of experiment, three heavy oil specimens with different oil viscosities are utilized under the same temperature condition (40°C). Initial gas oil ratio (GOR) is settled the same in all experiments. The experimental results of different temperatures indicate that foamy oil flow is weakened, and oil recovery factor declines with elevating temperatures. However, gas recovery factor increases when temperature rises. It is observed that the higher initial reservoir pressure does not certainly increase oil recovery factor during foamy oil flow. Given a favorable live oil viscosity, oil recovery can reach the optimized value. A new foamy oil behavior is discovered during the study, in which a second foamy oil flow appears during the late-time production. The experimental results of different viscosities showed that, there is an optimal live oil viscosity for foamy oil production because the results give a non-linear relationship between oil recovery factor and oil viscosity. The dead oil viscosity should also be considered when estimating oil recovery performance since oil viscosity is approaching to dead oil viscosity due to the relatively low reservoir GOR after gas is produced.

Download or read book Cold Production of Heavy Oil an Experimental Investigation of Foamy Oil Flow in Porous Media written by and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Experimental Study on Foamy Oil Flow by Using Different Heavy Oil Solvent Systems written by Xiang Zhou and published by . This book was released on 2015 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Foamy oil flow that occurs in heavy oil reservoirs under solution gas drive in the primary production process, shows an anomalous production performance compared with that in conventional solution gas drive reservoirs [Maini, 2001]. Although several laboratory experimental studies have been carried out to research the mechanisms of foamy oil flow in physical models, and the production performance effects of pressure depletion rates on foamy oil flow have been studied, it remains difficult to understand the process clearly. Meanwhile, many oil samples used in previous studies were on heavy oil-methane systems or heavy oil-CO2 systems, rarely on heavy oil-propane systems. Therefore, it is of crucial importance to understand the solution gas drive mechanisms in heavy oil reservoirs with different hydrocarbon solvent gases (methane, propane, and mixture) under different constant pressure depletion rates, so as to guide a better cold heavy oil production. In this study, pressure depletion tests on foamy oil flow were conducted in two kinds of apparatus, namely the Pressure-Volume-Temperature (PVT) system and the sandpack system, to investigate the effects of the pressure depletion rate on different heavy oil-solvent systems in bulk phase and porous media, respectively. Pure methane, pure propane, and a mixture of methane and propane were recombined into a Manatokan dead heavy oil sample to generate live oil samples, respectively. For the heavy oil-pure solvent system, both the PVT tests using the Constant Component Expansion (CCE) approach under constant volume depletion rates and the sandpack tests under constant pressure depletion rates were conducted to examine the effects of different pressure operation schemes on improving foamy oil recovery efficiency. For the heavy oil-mixture system, only sandpack tests were developed under constant pressure depletion rates to study the mixture effects on foamy oil flow. For each heavy oil-solvent system, four different volume or pressure depletion rates were undertaken; in total, eight PVT tests and twelve sandpack tests were carried out in this study. The experimental results showed that for the PVT tests, the plots of pressure versus time elapses and volume changes versus pressure declines of the heavy oil-methane system were much smooth than those of the heavy oil-propane system, which means the volume increase rates of the oil mixture and bulk phase are synchronous in the heavy oil-methane system. However, in the heavy oil-propane system, the volume increase rate of the oil mixture was lower than that of the volume increase rate in the bulk phase. Due to the high solubility of propane in heavy oil, the nucleated bubbles were trapped in the heavy oil and it was difficult for them to evolve out; the propane was recombined into the live oil simultaneously with undergoing the dynamic process undergoing, resulting in appearance of fluctuations in the plots. For the sandpack tests, the trend of oil production recovery factor is different from former researches which indicated that the oil recovery factor has a proportional relationship with pressure depletion rates. In this study, the oil recovery factor plot has a non-linear relation with pressure depletion rates, and there are summits in the recovery plots for the three heavy oil-solvent systems. Finally, for the three heavy oil-solvent systems a brief chart, from which pressure depletion rates can be optimized for the foamy oil flow and Cyclic Solvent Injection (CSI) processes, was developed.

Download or read book The Journal of Canadian Petroleum Technology written by and published by . This book was released on 2009 with total page 524 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings of the International Field Exploration and Development Conference 2021 written by Jia'en Lin and published by Springer Nature. This book was released on 2022-09-07 with total page 5829 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book 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, and geomechanics. This book is a compilation of selected papers from the 11th International Field Exploration and Development Conference (IFEDC 2021). 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.

Download or read book Modeling of Enhanced Heavy Oil Recovery Processes written by Zinqian Lu and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many heavy oil reservoirs are now developed by enhanced heavy oil recovery methods, such as solvent-based recovery techniques. The solvent-based recovery techniques have advantages in energy effectiveness, cost efficiency, and environmental benefits compared with other methods. In the application of solvent-based recovery techniques, many types of solvent are available, including methane (C1), propane (C3), carbon dioxide (CO2), and solvent mixture. Foamy oil flow is considered an essential mechanism and has been extensively studied. For each heavy oil-solution gas system, the flow behavior is unique, and a systematic study is necessary to understand the foamy oil mechanism better. Previously proposed simulation models did not history match the production data and pressure distribution simultaneously. This deficiency would increase the uncertainty of the simulation result and influence the subsequent evaluation or prediction of the enhanced heavy oil recovery process since the pressure incremental is not captured. This work provides an innovative methodology to characterize foamy oil flow and gas-oil two-phase flow in heavy oil-different solvent systems. For each heavy oil-solvent system, a reliable non-equilibrium simulation model is developed and validated with sand-pack model pressure depletion tests by capture the production data and pressure distribution. This work consists of a systematic simulation study using the same heavy oil sample with different types of solvent. Since the mobility ratio between the solvent and heavy oil in applying solvent-based recovery techniques is very high, the frontal instabilities are also widely observed at the two-phase interface. The instabilities grow and form the viscous fingering phenomenon. Due to the existence of viscous fingering, the breakthrough time is shortened significantly, which will impact the oil recovery and swept efficiency. Since the description and prediction of the two-phase frontal instabilities in the porous media is always a challenge, most current work is based on theoretical models and rarely validated with lab tests. In addition, previous modeling works of frontal instabilities were mainly conducted in the Hele-Shaw model or micromodel, not in the sand-pack model. Hence, previous conducted experimental works were not analyzed with the simulation study in the porous media. In this work, a simulation model is developed by adopting the Volume of Fluid (VOF) method coupled with the Level-Set (LS) method to capture and track the immiscible two-phase interface between oil and water. Then the simulation results of viscosity fingering are validated with lab tests in the porous media in terms of qualitative (frontal instability morphological characteristics) and quantitative (breakthrough time) aspects. The characterization of the frontal instabilities (viscosity fingering) is investigated under different displacing rates and viscosities. It is very challenging to describe and predict both the foamy oil flow and frontal instabilities at the same time during the enhanced heavy oil recovery process. Therefore, this research conducted simulation works and validated with lab tests for each process (foamy oil flow and viscosity fingering) separately. The conducted researches provide numerical simulation methods and reliable simulation models that could be applied to further studies on the history match and prediction of field application. Moreover, the conducted researches allow future research to consider both phenomena (foamy oil flow and viscosity fingering) that happened in the enhanced heavy oil processes by integrating the proposed simulation models in this work.

Download or read book Multiphase Fluid Flow in Porous and Fractured Reservoirs written by Yu-Shu Wu and published by Gulf Professional Publishing. This book was released on 2015-09-23 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt: Multiphase Fluid Flow in Porous and Fractured Reservoirs discusses the process of modeling fluid flow in petroleum and natural gas reservoirs, a practice that has become increasingly complex thanks to multiple fractures in horizontal drilling and the discovery of more unconventional reservoirs and resources. The book updates the reservoir engineer of today with the latest developments in reservoir simulation by combining a powerhouse of theory, analytical, and numerical methods to create stronger verification and validation modeling methods, ultimately improving recovery in stagnant and complex reservoirs. Going beyond the standard topics in past literature, coverage includes well treatment, Non-Newtonian fluids and rheological models, multiphase fluid coupled with geomechanics in reservoirs, and modeling applications for unconventional petroleum resources. The book equips today’s reservoir engineer and modeler with the most relevant tools and knowledge to establish and solidify stronger oil and gas recovery. Delivers updates on recent developments in reservoir simulation such as modeling approaches for multiphase flow simulation of fractured media and unconventional reservoirs Explains analytical solutions and approaches as well as applications to modeling verification for today’s reservoir problems, such as evaluating saturation and pressure profiles and recovery factors or displacement efficiency Utilize practical codes and programs featured from online companion website

Download or read book Special Issue on Foamy Oil Flow in Porous Media written by R. E. Hayes and published by . This book was released on 1999 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hybrid Enhanced Oil Recovery Processes for Heavy Oil Reservoirs written by Xiaohu Dong and published by Elsevier. This book was released on 2021-10-27 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hybrid Enhanced Oil Recovery Processes for Heavy Oil Reservoirs, Volume 73 systematically introduces these technologies. As the development of heavy oil reservoirs is emphasized, the petroleum industry is faced with the challenges of selecting cost-effective and environmentally friendly recovery processes. This book tackles these challenges with the introduction and investigation of a variety of hybrid EOR processes. In addition, it addresses the application of these hybrid EOR processes in onshore and offshore heavy oil reservoirs, including theoretical, experimental and simulation approaches. This book will be very useful for petroleum engineers, technicians, academics and students who need to study the hybrid EOR processes, In addition, it will provide an excellent reference for field operations by the petroleum industry. Introduces emerging hybrid EOR processes and their technical details Includes case studies to help readers understand the application potential of hybrid EOR processes from different points-of-view Features theoretical, experimental and simulation studies to help readers understand the advantages and challenges of each process

Download or read book Foamy Oil Flow in Porous Media written by James Jiaping Sheng and published by . This book was released on 1997 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Flow of Foam Through Porous Media written by Suhail Ashraf Khan and published by . This book was released on 1965 with total page 152 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 1052 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Foamy Oil Flow in Porous Media written by and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings of the International Field Exploration and Development Conference 2023 written by Jia’en Lin and published by Springer Nature. This book was released on with total page 1347 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Energy Research Abstracts written by and published by . This book was released on 1994-02 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Colloids and Interfaces in Oil Recovery written by Spencer Taylor and published by MDPI. This book was released on 2019-06-21 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is well-known that colloid and interface science and petroleum production are inextricably linked. Whether in the reservoir, with its porous structure, or during recovery, crude oil is intimately associated with rock surfaces and with water, often in the form of emulsions. This situation leads to highly complex systems, comprising multiple colloids and interfaces, which require to be optimized if oil is to be recovered efficiently, both in terms of economic cost and with due concern for the environment. This book contains a compilation of contemporary research topics which illustrate various aspects of the importance of colloids and interfaces in crude oil recovery through modifying conditions between the rock, crude oil, and water in the reservoir, in order to achieve improved oil recovery. The specific topics covered relate both to conventional oils, in which waterflooding is the most common secondary and tertiary means of recovery, and to non-conventional heavy oil and natural bitumen, which require thermal recovery methods, owing to their high viscosity.

Download or read book Economically and Environmentally Sustainable Enhanced Oil Recovery written by M. R. Islam and published by John Wiley & Sons. This book was released on 2020-03-17 with total page 820 pages. Available in PDF, EPUB and Kindle. Book excerpt: There have been many books on the topic of Enhanced Oil Recovery (EOR) over the last 100 years. They all, however, focus on how to recover more oil faster, taking a rather myopic approach. The solutions presented all work fantastically in theory and even in the laboratory, but each fails to produce results in the field with long-term success. The petroleum industry is almost resigned to the belief that for an EOR technique to be successful, it must be propped up with public funds or must compromise environmental integrity. In line with modern engineering practices, previous books discuss how existing technologies can be tweaked to accommodate for any shortcomings that just came to light. This book is unlike any other book on the topic of recovery in particular and engineering in general. This groundbreaking volume is a continuation of the author’s and his research group’s work that started publishing on the subject of global sustainability involving energy and the environment, dating back to early 2000s. Starting with a paradigm shift in engineering that involves a long-term focus, rather than looking for short-term solutions, the methods and theories presented here delve into applying green engineering and zero waste principles to EOR. Historically, EOR has received mixed success, mainly because innovations in these disciplines relied heavily on processed materials, which are both uneconomical and toxic to the environment. This book explains how engineers missed entirely the causes of unsustainability in these technologies due to the prevalence of many myths that are embedded in modern engineering. Once these myths are deconstructed, the appropriate technologies emerge and the merits of them both in terms of economic and environmental benefits become clear. The book reveals how previous practices in EOR can be replaced with their sustainable versions while saving in material costs. A number of innovative technologies are introduced that can render well known technologies, such as steam flood, in situ combustion, chemical flooding, and microbial EOR environmentally sustainable and economically attractive. A triple dividend is received once these technologies are applied in otherwise marginal reservoirs, unconventional plays and even abandoned formations. The overall reserve, which reflects recoverable oil with new technologies, goes up drastically. Further benefits are drawn when processes such as value addition of waste material is performed. Overall this book shows how EOR can be rendered green while increasing the profitability. This is in stark contrast to the past practices that considered environmental integrity as a drain on profitability. This book proves that a paradigm shift can turn a “technological disaster” into a technological marvel.