부산대학교 도서관

The results of treating a pilot area located on the E. edge of the Weyburn Unit with Channelblock are discussed in this paper. Channelblock is obtained by mixing polymer in low concentrations (0.05 to 0.1%) with water and adding an activator which greatly changes the characteristics of the injected water to a gel-like material. This gelled polymer gradually penetrates and adsorbs itself on the walls of the highly permeable streaks or fractures thus diverting large quantities of water into the tighter zones. The treatment can be tailored to achieve a predetermined injection pressure at a constant injection rate. The process required very little modification of the existing facilities to connect the fully automated mixing unit which is briefly described in the report. Channelblock has proven to be effective in diverting water to the tighter zones. Three new areas in the Weyburn Unit have been selected for further treatment.