Simulation and analysis of polymer dispersed dissolution process on offshore platforms

Abstract

When the offshore oil field polymer flooding carried out field experiment to expand the scale of polymer injection, the polymer dispersed and dissolved poorly, and with floc output, because of the existing process used the previous construction parameters. Therefore, it was found that the process/method of the two-stage preparation of the mother liquor in the offshore oil field was reasonable and feasible through the parameter analysis of the dispersion process on the offshore platform. The mixing effect of the water and powder in the dissolving tank was further studied in terms of the stirring rate and stirring position of the fan blade which could change the water speed and changing the feeding position of the polymer powder. The simulation results showed that increasing the stirring rate to form a consistent circulation state with the inlet water and feeding the powder into the main stream line of the circulation were beneficial to the dispersion and dissolution of the polymer powder. Thus, the purpose of fully dispersing and dissolving polymer powder during the preparation of high concentration of polymer mother liquor was achieved.