An amphoteric starch-graft-polyacrylamide (S-g-PAM) was prepared by inverse emulsion polymerization, subsequent hydrolysis reaction and Mannich reaction. The effects of reaction conditions on copolymerization and the use of the polymer as the water clarifier in oilfield water treatment were investigated. The application test showed that the results of oilfield waste water treatment by amphoteric S-g-PAM were better than those treated with cationic polyacrylamide (PAM), hydrolytic PAM and amphoteric PAM.

Keywords:
upstream oil & gas, amination degree, water management, formaldehyde, waste management, amphoteric product, concentration, acrylamide, produced water discharge, hydrolysis degree
Subjects:
Environment, Water use, produced water discharge and disposal, Waste management
Copyright 2011, Society of Petroleum Engineers
You can access this article if you purchase or spend a download.