Investigation of Gel Rheology Used for Water Shutoff Treatment

It has been observed that large amounts of polyacrylamide gels are being used for reducing excess water production from matrix and fracture media. Gel performance as water shutoff can be evaluated by coreflood experiments, but they are both expensive and timeconsuming. In this work, Cr(III)-acetate/ polyacrylamide copolymer gel behavior were studied using rheological measurements. The results indicated high capability of the gelled network to stretch up to 3000%. The consistency of gelling system also depends on time-scale so that in short scale the gelling system behaves like an elastic material but in long scale viscous nature dominated on its elastic

Keywords:

Gel , Water Shutoff , Rheology , Elastic and Viscous modulus