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- W2375591049 abstract "The 1 500 mg/L polymer solution under study is prepared in a standard brine of Shengli oil fields ( TSD= 5 725 mg/L and Ca 2+ +Mg 2+ 108 mg/L) with a commercial HPAM of M =9.56×10 6 and HD =23%. The solution is treated in a tube of inner diameter 6 cm and length 30 cm under various simulation conditions in 1 h or 3 h and the solution treated is evaluated for viscosity at 7 s -1 and Fe 3+ concentration. On the basis of the data obtained the origin of viscosity loss in injection pipelines is analysed. According to the influencing power in decreasing polymer solution viscosity and in creating Fe 3+ in solution, the treating conditions are arranged in order: in carbon steel tubein nitriding steel tubein glass tube; at 70℃at ambient temperature; in exposure to air oxygenin nitrogen atmosphere; in 3 hin 1 h. At ambient temperature in exposure to air oxygen and under static condition the solution viscosity decreases with increasing Fe 2+ amount added and with enlarging treating time from 1 to 3 h and 50% of viscosity is lossed in 3 h with 10 mg/L Fe 2+ added. Following conclusions are made: in injection pipelines polymer in solution undergoes mainly mechanical, shear, and chemical degradation; the former is influence by coarseness of pipe walls; the pipe steel corroded by dissolved oxygen releases Fe 2+ and Fe 2+ is oxidized to Fe 3+ and causes chemical degradation of polymer which is enhanced at elevated temperatures." @default.
- W2375591049 created "2016-06-24" @default.
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- W2375591049 date "2003-01-01" @default.
- W2375591049 modified "2023-09-25" @default.
- W2375591049 title "A Simulation Study on Polymer Degradation in Injection Pipelines" @default.
- W2375591049 hasPublicationYear "2003" @default.
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