THE EFFECT OF NANOSILICA ADDITION ON PARTIALLY HYDROLYZED POLYACRYLAMIDE (PHPAM) FOR ENHANCED OIL RECOVERY (EOR) APPLICATION

• Main Author: Ivander, Carolus
• Format: Final Project
• Language: Indonesia
• Subjects: Kimia
• Online Access: https://digilib.itb.ac.id/gdl/view/55079
• Institution: Institut Teknologi Bandung

Partially hydrolyzed polyacrylamide (PHPAM) is a polymer that is often used as an enhanced oil recovery (EOR) agent. PHPAM has advantages such as high viscosity and large water solubility. However, PHPAM can experience degradation at high temperatures and salinity resulting in a drastic decrease in viscosity. On the other hand, nanosilika is one of the EOR agents which has a mechanism to change the wettability of reservoir rock. Nanosilika is often used because it is stable, has large surface area, and economical. Furthermore, the nanosilic characteristics can be improved through surface modification with 3- aminopropyltriethoxysilanes (APTES). This study aims to synthesize polyacrylamide (PAM) with varied mass of acrylamide and potassium persulfate (KPS) and improve the resistance of PHPAM at 60 ? and salt concentrations of 0.25-1.0% (w/w) through the formation of the PHPAM-nanosilika dispersion. In this study, polyacrylamide (PAM) has been synthesized with acrylamide varying from 31 g to 52 g and KPS variations between 0.01 g and 0.10 g. From the viscosity measurement, it is found that the ?????? ?? PAM will increase with the increase in mass of acrylamide and KPS. Then partially hydrolyzed PAM (PHPAM) has an increase in viscosity value and it is found that the viscosity of the synthesized PHPAM has a greater value than commercial PHPAM. These results indicate that the synthesized PHPAM is feasible to be tested in the reservoir. In this experiment, PHPAM dispersion was also made using nanosilika (NS) and APTES modified nanosilika (NSA). From the results of viscosity measurement, it is found that the viscosity of the dispersion has a higher value than PHPAM itself at 60 ? and salt solution. Furthermore, in the salt solution, the average viscosity reduction of PHPAM-NSA and PHPAM-NS dispersion is lower than that of the PHPAM solution. These results indicate that the addition of nanosilika to PHPAM is able to improve the viscosity resistance of the polymer at 60 ? and salt solution.