decrease in viscosity of partially hydrolyzed polyacrylamide

Decrease in viscosity of partially hydrolyzed polyacrylamide

applications, partially hydrolyzed polyacrylamide (HPAM) is the most widely used polymer, thanks to its relatively cheap price and good solubility in water. The molecular structure of HPAM is given in Fig. 1 (Sheng 2010). Polymer solution must maintain high viscosity to mobilize oil in reservoir. However, high shearing, high

Sep 1, 2019 · ? Abstract 2 O 2 ), sodium hypochlorite (NaOCl), and chlorine dioxide (ClO 2 H O ? ). However, after 2 min further exposure, the viscosity grew back to 3.29 mPa.s (18 KHz), 1.42 mPa.s (20 KHz), and 3.74 mPa.s (25 KHz). This adverse behavior is owing to hydroxyl radical ( H O ?) annihilation.

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(PDF) Synthesis of partially hydrolyzed polyacrylamide and

The structure and intrinsic viscosity of the partially hydrolyzed polyacrylamide (HAPM) and polyacrylamide (PAM) in aqueous solution were investigated by comparative studies of molecular dynamics simulation over a wide range of the NaCl concentration.

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Viscosity of partially hydrolyzed polyacrylamide under

Viscosity of polymer solution is one of the key factors which, in some case, notably influence its application effect. However, it has been found that the viscosity drops significantly with sulfide ion. To better understand this phenomenon, the rheological behavior, dynamic light scattering (DLS), and <SUP>1</SUP>H NMR analysis were conducted. The results show that sulfide ion significantly

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Decrease in viscosity of partially hydrolyzed polyacrylamide

This study investigates the onset of gelation behavior of partiallyhydrolyzed polyacrylamide-hexamine-pyrocatechol polymer gel system which may be used to control excessivewater production in the oil fields. Rheological measurements of this system have been performed at different timeintervals and pH at 90°C.

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Experimental and mechanism study: Partially hydrolyzed

Partially hydrolyzed Polyacrylamide (PHPAM) crosslinked by Cr<sup>+3</sup> is frequently applied to plug thief zone for the better water management in matured oil reservoir. However, PHPAM gel may certainly cause inevitable formation damage nearby the wellbore. Although various kinds of chemical age …

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Prediction of Viscosity for Partially Hydrolyzed - OnePetro

Affiliations 1 Department of Petroleum and Gas Engineering, Balochistan University of Information Technology, Engineering & Management Sciences (BUITEMS) Quetta-Pakistan, Pakistan; School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266555, China.

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Peroxidase Catalyzed Degradation of Partially Hydrolyzed

fracturing practices, high viscosity cross-linked cellulosic polymers are used in order to transport and suspend proppant in the fracture. On the other hand, high molecular weight partially hydrolyzed polyacrylamide (HPAM) is used as a friction reducer in unconventional “slickwater” fracturing.

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