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Effect of partially hydrolyzed polyacrylamide
In this work, the effect of partially hydrolyzed polyacrylamide (HPAM) on the oil–water interfacial properties of produced water from polymer flooding (PWPF) was investigated. In addition, this study investigated the effects of three fiocculants (polyaluminium chloride PAC, cationic polymer FO4800SH, and nonionic polymer 402) on the stability
Influences of partially hydrolyzed polyacrylamide (HPAM
1. Introduction. Polymer flooding is an enhanced oil recovery (EOR) process. Water-soluble polymer, for example partially hydrolyzed polyacrylamide (HPAM), is added to the flooding water to improve the mobility ratio in the flooding process .Polymer flooding technology has been used in the later period of oil field producing.
Competitive adsorption of PAM and HPAM on Siliceous
In the literature, the term polyacrylamide refers to neutral, hydrolyzed, and chemically modified polyacrylamide and in this sense polyacrylic acid may likewise be considered to consist of
Modified method to detect surface rheological behavior
Modified method to detect surface rheological behavior of mixed partially hydrolyzed polyacrylamide (HPAM)/surfactant systems Article in Journal of Applied Polymer Science 78(4):704-706 · October
Interaction Between the Hydrophobically Modified
A complex system that consists of cetyltrimethylammonium bromide (CTAB), Triton X-100 (TX-100), and hydrolyzed polyacrylamide (HPAM), differing from the old-time conceptions of the displacement
Theoretical studies of hydrolysis and stability
Water-soluble polyacrylamide (PAM) and partially hydrolyzed polyacrylamide (HPAM) polymers are among the most commonly used chemicals in oilfield applications. In polymer-augmented water-flooding Enhanced Oil Recovery (EOR) processes, HPAM polymers are often used as mobility-control agents to increase the viscosity of stimulation fluids in
Effect of HPAM hydrolysis degree on catanionic mixtures
The peaks position for Backbone and Polar bead of HPAM are at 1.12 nm and 1.30 nm respectively, which are all between the peaks of Tail3 (1.04 nm) and Head (1.46 nm) beads of DTAB, indicating that HPAM chain locate between the hydrophobic core and the hydrophilic shell of surfactant micelle.
Rheological Evaluation of HPAM fluids for EOR Applications
Polyacrylamide is a synthetic water-soluble polymer. It usually consists of copolymers of various ratios of acrylic acid and acrylamide (CAENN & CHILLINGAR, 1996). The most widely used form of the HPAM for recovery methods is the partially hydrolyzed (LAKE, 1989; SORBIE 1991; SHENG, 2011). The HPAM is a polyelectrolyte with negative charges
Hydrophobically Associating Polymers for Oilfield Applications
hydrolyzed polyacrylamide corefloods. The associating polymer was a partially hydrolyzed copolymer of acrylamide and a cationic hydrophobic monomer. It had improved salinity and temperature tolerance compared to HPAM. Varadaraj et al. (24) patented a composition containing a hydrophobically associating polymer and a surfactant for use in
Interaction between sodium oleate and partially hydrolyzed
The interaction between sodium oleate (C 17 H 33 COONa) and partially hydrolyzed polyacrylamide (HPAM) was investigated by rheological measurements. Mainly four series with concentration of HPAM to be 0.1 wt%, 0.2 wt%, 0.4 wt% and 0.6 wt%, respectively, were studied.