Download or read book Hydrogels Applied for Conformance Improvement Treatment of Oil Reservoirs written by Fernanda G. C. and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This chapter aims at presenting a review of gelling polymer systems that are commercially available or under academic development with potential to control the anisotropic permeability profile of heterogeneous oil reservoirs. In these reservoirs, the oil recovery and sweep efficiency tend to be low, even after applying secondary and enhanced oil recovery methods, because the injected fluid flows preferably through the matrix's most permeable regions leaving behind part of the displaceable oil retained at the nonswept volume. For that, cross-linked polymers can be used to plug the high-permeability main paths by means of: (i) the formation of an in situ hydrogel or (ii) the adsorption or swelling of pre-cross-linked hydrogel within the reservoir pores, thus causing the diversion of the subsequently injected fluid to low-permeability zones and/or preventing the channeling and early breakthrough of the injected fluid (water or gas) in production wells. The selection of the most suitable hydrogel for the reservoir conformance-improvement treatment should take into account the nature of the conformance problem, the reservoir's lithology, mineralogy, temperature, pH value, salinity, and hardness of the formation water, as well as the gelling system toxicity and cost.
Download or read book Hydrogels written by Sajjad Haider and published by BoD – Books on Demand. This book was released on 2018-08-01 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new important book is a collection of research and review articles from different parts of the world discussing the dynamic and vibrant field of hydrogels. The articles are linking new findings and critically reviewing the fundamental concepts and principles that are making the base for innovation. Each chapter discusses the potential of hydrogels in diverse areas. These areas include tissue engineering, implants, controlled drug release, and oil reserve treatment. The book is offering an up-to-date knowledge of hydrogels to experienced as well as new researchers.
Download or read book written by and published by . This book was released on 1986 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Improving Reservoir Conformance Using Gelled Polymer Systems Quarterly Report September 25 December 24 1993 written by and published by . This book was released on 1994 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: The general objectives are to (1) to identify and develop gelled polymer systems which have potential to improve reservoir conformance of fluid displacement processes, (2) to determine the performance of these systems in bulk and in porous media, and (3) to develop methods to predict the capability of these systems to recover oil from petroleum reservoirs. This work focuses on three types of gel systems -- an aqueous polysaccharide (KUSP1) system that gels as a function of pH, the chromium(III)-polyacrylamide system and the aluminum citrate-polyacrylamide system. Laboratory research is directed at the fundamental understanding of the physics and chemistry of the gelation process in bulk form and in porous media. This knowledge will be used to develop conceptual and mathematical models of the gelation process. Mathematical models will then be extended to predict the performance of gelled polymer treatments in oil reservoirs. Results to date are summarized.
Download or read book Improving Reservoir Conformance Using Gelled Polymer Systems Fourteenth Quarterly Report January 1 1996 March 31 1996 written by and published by . This book was released on 1996 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: The general objectives are to (1) to identify and develop gelled polymer systems which have potential to improve reservoir conformance of fluid displacement processes, (2) to determine the performance of these systems in bulk and in porous media, and (3) to develop methods to predict the capability of these systems to recover oil from petroleum reservoirs. This work focuses on three types of gel systems - an aqueous polysaccharide (KUSP1) system that gels as a function of pH, the chromium(III)-polyacrylamide system and the aluminum citrate-polyacrylamide system. Laboratory research is directed at the fundamental understanding of the physics and chemistry of the gelation process in bulk form and in porous media. This knowledge will be used to develop conceptual and mathematical models of the gelation process. Mathematical models will then be extended to predict the performance of gelled polymer treatments in oil reservoirs. Technical progress of Task III, mechanisms of in situ gelation is presented in this progress report.
Download or read book Improving Reservoir Conformance Using Gelled Polymer Systems Eleventh Quarterly Report April 1 1995 June 30 1995 written by and published by . This book was released on 1995 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: The general objectives are to (1) to identify and develop gelled polymer systems which have potential to improve reservoir conformance of fluid displacement processes, (2) to determine the performance of these systems in bulk and in porous media, and (3) to develop methods to predict the capability of these systems to recover oil from petroleum reservoirs. This work focuses on three types of gel systems -- an aqueous polysaccharide (KUSP1) system that gels as a function of pH, the chromium(III)-polyacrylamide system and the aluminum citrate-polyacrylamide system. Laboratory research is directed at the fundamental understanding of the physics and chemistry of the gelation process in bulk form and in porous media. This knowledge will be used to develop conceptual and mathematical models of the gelation process. Mathematical models will then be extended to predict the performance of gelled polymer treatments in oil reservoirs. Technical progress is described for the following tasks: physical and chemical characterization of gel systems; mechanisms of in situ gelation; and mathematical modelling of the gel systems.
Download or read book Improving Reservoir Conformance Using Gelled Polymer Systems Sixth Quarterly Report December 25 1993 March 24 1994 written by and published by . This book was released on 1994 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: The general objectives are to (1) to identify and develop gelled polymer systems which have potential to improve reservoir conformance of fluid displacement processes, (2) to determine the performance of these systems in bulk and in porous media, and (3) to develop methods to predict the capability of these systems to recover oil from petroleum reservoirs. This work focuses on three types of gel systems - an aqueous polysaccharide (KUSP1) system that gels as a function of pH, the chromium(III)-polyacrylamide system and the aluminum citrate-polyacrylamide system. Laboratory research is directed at the fundamental understanding of the physics and chemistry of the gelation process in bulk form and in porous media. This knowledge will be used to develop conceptual and mathematical models of the gelation process. Mathematical models will then be extended to predict the performance of gelled polymer treatments in oil reservoirs. Accomplishments for this quarter are presented for the following tasks: development and selection of gelled polymer systems; and physical and chemical characterization of gel systems.
Download or read book De la Discipline et autres mortifications et penitences en usage chez les religieuses Carm lites d chauss es de la r forme de Sainte Th r se Troisi me centenaire de la r forme de sainte Th r se en France written by and published by . This book was released on 1905 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Improving Reservoir Conformance Using Gelled Polymer Systems Quarterly Progress Report July 1 September 30 1994 written by and published by . This book was released on 1994 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: The general objectives are to (1) to identify and develop gelled polymer systems which have potential to improve reservoir conformance of fluid displacement processes, (2) to determine the performance of these systems in bulk and in porous media, and (3) to develop methods to predict the capability of these systems to recover oil from petroleum reservoirs. This work focuses on three types of gel systems an aqueous polysaccharide (KUSP 1) system that gels as a function of pH, the chromium(III)-polyacrylamide system and the aluminum citratepolyacrylamide system. Laboratory research is directed at the fundamental understanding of the physics and chemistry of the gelation process in bulk form and in porous media. This knowledge will be used to develop conceptual and mathematical models of the gelation process. Mathematical models will then be extended to predict the performance of gelled polymer treatments in oil reservoirs. Technical progress is described for three studies: Physical and chemical characterization of gel systems (chemical reaction kinetics of KUSP1); Mechanisms of in situ gelation; and Mathematical modeling of gel systems.
Download or read book Improving Reservoir Conformance Using Gelled Polymer Systems Third Quarterly Report March 25 1993 June 24 1993 written by and published by . This book was released on 1993 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: The general objectives are to (1) to identify and develop gelled polymer systems which have potential to improve reservoir conformance of fluid displacement processes, (2) to determine the performance of these systems in bulk and in porous media, and (3) to develop methods to predict the capability of these systems to recover oil from petroleum reservoirs. This work focuses on three types of gel systems - an aqueous polysaccharide (KUSP1) system that gels as a function of pH, the chromium-based system where polyacrylamide and xanthan are crosslinked by CR(III) and an organic crosslinked system. Development of the KUSP1 system and evaluation and identification of a suitable organic crosslinked system will be done. The laboratory research is directed at the fundamental understanding of the physics and chemistry of the gelation process in bulk form and in porous media. This knowledge will be used to develop conceptual and mathematical models of the gelation process. Mathematical models will then be extended to predict the performance of gelled polymer treatments in oil reservoirs. Accomplishments for this quarter are presented for the following tasks: development and selection of gelled polymer systems; physical and chemical characterization of gel systems; mechanism of in situ gelation; and mathematical modelling of gel systems.
Download or read book Improving Reservoir Conformance Using Gelled Polymer Systems Quarterly Report 1 October 1995 31 December 1995 written by and published by . This book was released on 1996 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: The general objectives are to (1) to identify and develop gelled polymer systems which have potential to improve reservoir conformance of fluid displacement processes, (2) to determine the performance of these systems in bulk and in porous media, and (3) to develop methods to predict the capability of these systems to recover oil from petroleum reservoirs. This work focuses on three types of gel systems -- an aqueous polysaccharide (KUSPL) system that gels as a function of pH, the chromium(Ill)-polyacrylamide system and the aluminum citrate-polyacrylamide system. Laboratory research is directed at the fundamental understanding of the physics and chemistry of the gelation process in bulk form and in porous media. This knowledge will be used to develop conceptual and mathematical models of the gelation process. Mathematical models will then be extended to predict the performance of gelled polymer treatments in oil reservoirs. Work has progressed on the size measurement of aggregates that form in the polyacrylamide-aluminum citrate ''colloidal dispersion'' system. The results from this study and other work on the polyacrylamide-aluminum citrate system indicate that aggregates and/or structure in the system may not occur unless the system is subjected to a shear deformation. Further work is required to determine if aggregates develop and crow in the polyacrylamide-aluminum citrate system.
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 260 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 Gels Structures Properties and Functions written by Masayuki Tokita and published by Springer. This book was released on 2009-10-08 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume includes 28 contributions to the Toyoichi Tanaka Memorial Symposium on Gels which took place at Arcadia Ichigaya on September 10th-12th, 2008. The contributions from leading scientists cover a broad spectrum of topics concerning: Structure and Functional Properties of Gels - Swelling of Gels - Industrial and Biomedical Application. The symposium was held in the style of Faraday Discussions, which stimulated the active discussion. After the symposium, each manuscript was rewritten based on the discussion and the critical review. Since the research on gels is becoming more and more important both for academia and industry, this book will be an essential source of information.
Download or read book An Investigation of Plugging and Increasing Oil Recovery in Sandstone Porous Media by Micrometer size Particle Gel written by Haifeng Ding and published by . This book was released on 2016 with total page 65 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Micrometer-size particle gel (microgel) has been developed and successfully applied to improve conformance in mature reservoirs. However, quite few researches have been published to address on their effect on oil recovery and rock permeability modification. This work conducted a series of core flooding experiments to investigate the injectivity, plugging efficiency and improving oil recovery potentials of a couple of microgels synthesized in our lab. First, this work studied the impact of permeability and crosslinker concentration on PAM type microgel treatment. Results shows that microgel treatment would have a less plugging efficiency in lower permeability rocks, which could be caused by high injection pressure in lower permeability rocks. However, the oil recovery was higher in lower permeability rocks. The microgel synthesized by lower concentration of crosslinker have bigger particle sizes. Meantime, there would be higher plugging efficiency and better improved oil recovery when crosslinker concentration is lower. Moreover, this work also studied the effect of permeability and oil saturation on the treatment of a novel type of microgel which can re-crosslink at specific reservoir conditions. Different from PAM microgel, the re-crosslinked microgel would have both better plugging efficiency and oil recovery improvement in lower permeability rocks. Meanwhile, microgel have better transportation ability in the rocks with high oil saturation than those without oil. Comparing Re-crosslinked microgel to PAM microgel, Re-crosslinked microgel have a better strength and disproportionate permeability reduction effect"--Abstract, page iii.
Download or read book Study and Development of Robust Preformed Particle Gels for Conformance Control written by Yifu Long and published by . This book was released on 2016 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt: "To improve the oil recovery of mature reservoirs, technologies referring to conformance control have been widely developed and implemented. Among various technologies, preformed particle gel (PPG) treatment has attracted increasing attentions. PPGs, as a kind of deformable plyometric superabsorbent, could be pumped through injection wells as plugging agents to block the fracture or high-permeability zone in a reservoir. In decade usage of PPGs, an intensively employed material is poly(acrylamide) (PAM) based hydrogel. However, conventional PAM gel did reveal deficient in formidable conditions, such as formations with high temperature and high salinity. Therefore, a novel PPG based on starch-grafting-poly(acrylamide)/nano-composite (SAC) hydrogel has been designed and successfully synthesized. Starch was utilized to improve viscoelasticity thereby facilitate particles' retention in fractures. Nano-clay was introduced to promote not only gel's strength but also its thermal stability. Optimization of components and analysis of environmental sensitivity were conducted via investigating gel swelling ratio and rheological property in which gel's viscoelasticity was quantified through HAAKE Rhescope1 rheometer. Core-flooding tests were performed using fractured sandstone core as physical simulation models to study the plugging performance of SAC gels in fracture media. According to experimental results, SAC gel was turned out an overwhelming PPG material compared with conventional PAM gel"--Abstract, page iii.
Download or read book Improving Reservoir Conformance Using Gelled Polymer Systems Quarterly Technical Progress Report July 1 1995 September 30 1995 written by and published by . This book was released on 1995 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: Objectives of this project are to identify and develop gelled polymer systems which have potential to improve reservoir conformance to fluid displacement systems; determine the performance of these systems; and to develop methods to predict the capability of these systems to recover oil from petroleum reservoirs. Gels investigated include an aqueous polysaccharide, a chromium-polacrylamide, and an aluminium citrate-polyacrylamide system.
Download or read book Waterflooding written by G. Paul Willhite and published by . This book was released on 1986 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt: Waterflooding begins with understanding the basic principles of immiscible displacement, then presents a systematic procedure for designing a waterflood.
