Adsorption studies of polyacrylamides in porous media
Adsorption of polyacrylamides having molecular weights from 300,000 to 8,000,000 onto porous media was studied by a flow rate reduction method and concentration depletion using colored samples. The observed kinetics are very slow, and maximal coverage is attained for very low bulk concentration in a quasi-irreversible manner.
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Factors Influencing Polyacrylamide Adsorption in Porous
The dynamic adsorption of different Polyacrylamides in unconsolidated porous media is discussed. The effect of average molecular mass, degree of hydrolysis, and concentration of polymers, quality and quantity of foreign electrolytes, wettability, chemical composition, and pore structure of porous media on adsorbed amount was studied.
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Impact of polyacrylamide adsorption on flow through porous
Adsorption of high molar mass polymers impacts flow in porous media. In the industrially crucial case of acrylamide-based polymers in porous silicates, the very occurrence of adsorption is still debated.
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Impact of Polyacrylamide Adsorption on Flow through Porous
The adsorption of modified polyacrylamides (PAM) at the silica surface has been studied by ellipsometry.
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Polyacrylamide degradation and its implications
Mechanical degradation is mostly likely to occur in oil and gas processing due to the high shear and elongational rates under turbulent flow through the small pores and fractures within the porous
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Bridging Adsorption Of Cationic Polyacrylamides In Porous
This so-called bridging adsorption mechanism has been described previously for high-molecular-weight non-ionic polyacrylamides (PAM). CPAM rheology and retention behavior has been studied in unconsolidated SiC packs and in Berea sandstones in a permeability range 0.1-1 D with CPAM solutions having a cationicity between 0 and 50%.
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Rate-dependent polymer adsorption in porous media
Rate-dependent polymer adsorption in porous media was investigated. • The double-polymer bank dynamic method was used. • Results showed that as flow rate increased, polymer adsorption increased. • Adsorption was largely reversible with minimal incremental irreversible adsorption. • Inaccessible pore volume decreased with increase in
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Adsorption of Polyacrylamide on Smectite, Illite,
Adsorption of high molecular weight polyacrylamides on soil particles is a complex phenomenon which is determined by a number of factors such as (i) the clay and silt fraction in soils that
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Modified acrylamide polymers for enhanced oil recovery
Modified acrylamide polymers for enhanced oil recovery. G. D. Khune. New Mexico Petroleum Recovery Research Center and the Department of Chemistry, New Mexico Institute of Mining and Technology, Socorro, New Mexico Flow Mechanism of Partially Cross-Linked Polyacrylamide in Porous Media, Journal of Dispersion Science and Technology, 35, 9,
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factors in porous media than HPAM. Furthermore, its associative properties are not so great that polymer propagation through porous media is impaired. For studies in porous media in this work, a wide range of flux (0.1 to 100 ft/d), polymer concentration (500-2,500 ppm), and core permeability (300-13,000 md) are investigated.
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An Experimental Study on Hydrodynamic Retention of Low
Polymers are often added with water as a viscosifier to improve oil recovery from hydrocarbon reservoirs. Polymer might be lost wholly or partially from the injected polymer solution by adsorption on the grain surfaces, mechanical entrapment in pores, and hydrodynamic retention in stagnant zones. Therefore, having a clear picture of polymer losses (and retention) is very important for
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FACTORS AFFECTING PARTICLE RETENTION IN POROUS MEDIA
Factors Affecting Particle Retention in Porous Media Emirates Journal for Engineering Research, Vol. 12, No.3, 2007 3 Figure 3. Particle Capture Mechanisms Figure 4. Formation of Filter Cake When multiple particles invade the porous media at the same time, the issue becomes more complicated. Deposited particles reduce the flowing path inside the
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Adsorption–desorption behavior of the hydrophobically
Adsorption–desorption behavior of the hydrophobically associating copolymer AM/APEG/C-18/SSS. Hongping Quan ab, Qiangying Lu ab, Zhonghao Chen ab, Zhiyu Huang * ab and Qingying Jiang ab a College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, PR China b Oil & Gas Field Applied Chemistry Key Laboratory of Sichuan Province, Chengdu 610500, PR China
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Polymer Flooding—Fundamentals and Field Cases - ScienceDirect
Assume the flow in porous media can be represented by capillary flow and the polymer solution viscosity can follow the power-law equation, the equivalent shear rate (γ ˙ eq) may be calculated using the following equation (Sheng, 2011): (3.5) γ ˙ eq = γ (3 n + 1 4 n) 4 u 8 k ϕ where u (= v ¯ / ϕ) is the Darcy velocity in porous media, k
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Niobrara Formation | SPE
The flow of oil-based foam in porous media is studied through microscopic-visualization experiments. Bubble division, bubble merging, and bubble deformation occur during oil-based-foam flow in porous media. The oil-recovery efficiency of the oil-based-foam flooding is 78.3%, while the oil-recovery efficiency of CO 2 flooding is only 28.2%.
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General Meeting: Proppant Placement in Complex Secondary
Jose is a geoscience professional, with more than 30 years of experience in E&P industry activities. He was a researcher for Venezuelan State Oil Research and Support Center (PDVSA/Intevep) in the areas of Fluid Flow in Porous Media, Rock-Fluid interaction during Well Construction and Production, Well Productivity and Formation Damage, Interfacial Phenomena and Design and Testing of Fluids to
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Modified acrylamide polymers for enhanced oil recovery
Modified acrylamide polymers for enhanced oil recovery. G. D. Khune. New Mexico Petroleum Recovery Research Center and the Department of Chemistry, New Mexico Institute of Mining and Technology, Socorro, New Mexico Flow Mechanism of Partially Cross-Linked Polyacrylamide in Porous Media, Journal of Dispersion Science and Technology, 35, 9,
Get PriceFACTORS AFFECTING PARTICLE RETENTION IN POROUS MEDIA
Factors Affecting Particle Retention in Porous Media Emirates Journal for Engineering Research, Vol. 12, No.3, 2007 3 Figure 3. Particle Capture Mechanisms Figure 4. Formation of Filter Cake When multiple particles invade the porous media at the same time, the issue becomes more complicated. Deposited particles reduce the flowing path inside the
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Nonevaporable getters
Modeling flow, evaporation and transport of multicomponent liquids remains one of the most challenging problems in porous media studies. Slow evaporation under isothermal conditions of a non-dilute multi-component liquid mixture from a cylindrical porous wick made of sintered polymer beads is...
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adsorption | OMICS International | Open Access Articles
12 Open Access Articles; Journal of Earth Science & Climatic Change Effects on Surface Area, Intake Capacity and Regeneration of Impregnated Palm-Shell Activated Carbon with Monoethanolamide and 2-Amino-2-Methyl- 1-Propanol Equipped For CO2 Adsorption. Research Article J Earth Sci Clim Change. DOI: 10.4172/2157-7617.1000484 Khalil SH. Peer-reviewed Full Article Peer-reviewed Article PDF Export
Get PriceNanomaterials | Free Full-Text | Upgrading of Extra-Heavy
The main objective of this study is to evaluate the injection of a dispersed nanocatalyst-based nanofluid in a steam stream for in situ upgrading and oil recovery during a steam injection process. The nanocatalyst was selected through adsorption and thermogravimetric experiments. Two nanoparticles were proposed, ceria nanoparticles (CeO2±;δ), with and without functionalization with
Get PriceProcesses | Free Full-Text | Biopolymer Solution
The methodology to study an eco-friendly and non-toxic, Schizophyllan, biopolymer for enhanced oil recovery (EOR) polymer flooding is described. The methodology is divided into two parts; the first part estimates the molar concentration of the biopolymer, which is needed to prepare the biopolymer solution with optimal viscosity. This is required to improve the sweep efficiency for the selected
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Mechanical Degradation of Polyacrylamides Induced by Flow Through Porous Media. American Chemical Society Polymer Preprints, 22: 30-33. Seright, R., Grieger-Block, R., and Thusius, D.1979. The Effects of Pressure on the Kinetics of Sodium Lauryl Sulfate Micelle Formation.
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RANDALL S. SERIGHT - New Mexico Institute of Mining
New Mexico Institute of Mining and Technology/ New Mexico Tech 801 Leroy Place Socorro, New Mexico 87801 (575) 835-5571 (Office) (575) 835-6031 (Fax) randy@prrc.nmt.edu (E-mail) Randy Seright heads the Reservoir Sweep Improvement group at the Petroleum Recovery Research Center of New Mexico Tech.
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Downstream processing and chromatography based analytical
In parallel to porous/perfusion particles different membrane- and monolith-based media were developed. The main advantage of these media over packed porous particles is that the mass transfer is predominantly based on convection rather than diffusion, which enables high flow rates to be used (10-20 times higher compared to packed porous
Get PriceUse of Polymers to Recover Viscous Oil from Unconventional
Characterized rheology in a viscometer and in porous media with permeabilities from 55 to 5120 md for nine commercially available polymers, including xanthan, diutan, and polyacrylamides. Injectivity reductions associated with injecting the above polymer solutions into North Slope horizontal and vertical wells were estimated.
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Could We Spare a Moment of the Spotlight for Persistent
Could We Spare a Moment of the Spotlight for Persistent, Water-Soluble Polymers? Hans Peter H. Arp*,†,‡ and Heidi Knutsen† †Norwegian Geotechnical Institute (NGI), P.O. Box 3930 Ullevål Stadion, N-0806 Oslo, Norway ‡Norwegian University of Science and Technology (NTNU), NO-7491 Trondheim, Norway T here is currently a research spotlight on microplastic and
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Nonevaporable getters
Modeling flow, evaporation and transport of multicomponent liquids remains one of the most challenging problems in porous media studies. Slow evaporation under isothermal conditions of a non-dilute multi-component liquid mixture from a cylindrical porous wick made of sintered polymer beads is...
Get PriceAdsorption–desorption behavior of the hydrophobically
Adsorption–desorption behavior of the hydrophobically associating copolymer AM/APEG/C-18/SSS. Hongping Quan ab, Qiangying Lu ab, Zhonghao Chen ab, Zhiyu Huang * ab and Qingying Jiang ab a College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, PR China b Oil & Gas Field Applied Chemistry Key Laboratory of Sichuan Province, Chengdu 610500, PR China
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The Study of Flow Characteristics During the Decomposition
The flow characteristics during decomposition of hydrate-bearing sediments are the most critical parameters for the gas recovery potential from natural gas hydrate reservoirs. The absolute and relative permeability and the flow field distribution during the decomposition process of hydrate-bearing porous media synthetically created by glass beads are in-situ measured by using magnetic
Get PriceViscoelastic and Viscoplastic Materials | Mohamed Fathy El
This book introduces numerous selected advanced topics in viscoelastic and viscoplastic materials. The book effectively blends theoretical, numerical, modeling and experimental aspects of viscoelastic and viscoplastic materials that are usually encountered in many research areas such as chemical, mechanical and petroleum engineering.
Get PriceMultiscale Apparent Permeability Model of Shale Nanopores
Based on fractal geometry theory, the Hagen–Poiseuille law, and the Langmuir adsorption law, this paper established a mathematical model of gas flow in nano-pores of shale, and deduced a new shale apparent permeability model. This model considers such flow mechanisms as pore size distribution, tortuosity, slippage effect, Knudsen diffusion, and surface extension of shale matrix.
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