Impact of Polyacrylamide Adsorption on Flow through Porous
The adsorption of modified polyacrylamides (PAM) at the silica surface has been studied by ellipsometry.
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
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.
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.
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%.
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
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
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,
SPE 141355 Rheology of a New Sulfonic Associative Polymer
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.
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
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
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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