RHEOLOGICAL INVESTIGATIONS OF PARTIALLY HYDROLYZED POLYACRYLAMIDE ? HEXAMINE ? HYDROQUINONE GELS

The rheological behaviour of polymer gel is the fundamental parameter for its application in the profile modification job in the oilfields. It is prepared by the combination of polymer, cross-linker and saline water. The reaction between polymer and cross-linker results in the formation of a 3-dimensional polymer gel network at reservoir conditions which forms a barrier to water flow in the reservoir. To ascertain the flow of the gel solution through the tubing to the petroleum formation before the formation of stiff gel, the study of rheological behaviour is essential. In this study, partially hydrolyzed poly acrylamide has been cross-linked with hexamine and hydroquinone cross linkers to form gel. The experimental investigation furnishes that the polymer solutions have good flow ability before the stiff gel formation which shows its potential for adequate pumping time before reaching the formation and better placement of polymer gel in the petroleum reservoir during profile modification jobs.