Study on the effect of cross-linked gel polymer on water shutoff in oil wellbores

Abstract

Polymer gelants are a settled methods for closing off water in lower temperature arrangements, however stretching out their application to hot reservoirs (>80 °C) presents various specialized difficulties, especially in matrix reservoirs. Accomplishing dependable high temperature execution requires programmable gelation delay, great infectivity, great engendering of gelant parts and solidness of the penetrability decrease. The presentation of a gelant against these measures is directed by a moderately little arrangement of concoction and physical phenomena. A conversation of this phenomenon’s gives a sound foundation for evaluating the points of interest and weaknesses of as of now accessible gelants. This additionally assists with recognizing the best roads for improving polymer gelant frameworks. This methodology is especially significant when looking for gelants for high-temperature matrix applications in light of the fact that expanded temperature renders it substantially harder to fulfil the four executions includes all the while. From literature, it is clear that the best alternative for water shutoff operations is hydrolyzed polyacrylamide based gels. A trivalent, Cr3+ cross-linked gel frame network is formed by the infusion of cross-linker and polymer, which has the capability of reducing water cut from the oil wellbores. Remembering the above, trial analysis were performed to build up framework of polymer utilizing halfway-hydrolyzed polyacrylamide polymer and CH4N2S/Potassium dichromate Cross linkers. The exploratory examination uncovers that huge porousness decrease at repository environments seen on the centre is preserved by considering the cross-liked polymer gel.