Water shutoff and profile control in China over 60 years

This paper describes the progress on origin, test, development, maturity for water shutoff,profile control, as well as profile control and flooding, deep fluid diversion and other technologies in China's oil fields. In the past 60 years, the mechanical packer isolation plugging, sodium silicate-calcium chloride plugging, polyacrylamide -clay profile control, swelling particle deep profile control, weak gel deep profile control and flooding, polymer microsphere indepth fluid diverting, PI, RE and RS block profile control decision making, and the chemical and mechanical water control in horizontal wells and selective water shutoff last ten years are landmark technologies. As the degree of oil and gas field development deepens,water shutoff and profile control technology for high temperature, deep wells, fractures, offshore reservoirs, water shutoff technology for horizontal wells and gas wells, intelligent chemical agent technology, highly efficient selective water shutoff agents technology, profile control and displacement technology after polymer flooding will become the focus of research.