Molecular Dynamics Simulation of Interaction between Polyacrylamide-Water for Enchanced Oil Recovery Application
Thoriq Vieri Alvianto, Mia Ledyastuti

Department of Chemistry, Faculty of Mathematics and Natural Science, Bandung Institute Of Technology

Abstract

Enhanced oil recovery (EOR) is crude oil extraction method by adding various chemicals into oil well. By this method, 10-20 % more crude oil extracted than without EOR. One of EOR method is chemical injection, which is adding chemical solution into water for increase the effectiveness of waterfloods by increase water viscosity. Polyacrylamide is one of chemical that can be used for EOR method because it can increase water viscosity, but there is few research article about interaction between polyacrylamide and water that makes water viscosity increase. This research purpose is investigate about interaction between polyacrylamide and water by using molecular dynamics simulation. In this research, there are 2 systems to be compared, water only system and polyacrylamide-water system. Other than that, there is variations in number of degree polymerization and water with sodium chloride. With this variations, the systems will compared in terms of viscosity, radius of gyration, solvent accessible surface area, radial force distribution and number of intramolecular hydrogen bonds. The results show that water viscosity, number of intramolecular hydrogen bonds, and solvent accessible surface area increase as number of degree polymerization increases. Radius of gyration and radial force distribution decrease as number of degree polymerization increases.

Keywords: Polyacrylamide, Molecular dynamics, Enhcanced oil recovery

Topic: CHEMISTRY AND MATERIAL SCIENCES