On the eve of the Spring Festival, the second oil mine of the No. 1 Oil Production Plant of Henan Oilfield passed the air compressor to reduce oxygen in the low pressure sewage storage tank for the preparation of mother liquor, so that the viscosity of the polymer mother liquor was greatly improved, and the viscosity increased from 500 to 600 mPa.s before desulfurization. Up to 2000mPa.s after desulfurization, the problem of chemical degradation of polymers has been basically solved.

At the beginning of the second H2II-H2III secondary polymer flooding commissioning, due to the chemical degradation of sulfur and polymer in the sewage during the polymer preparation process, the viscosity of the mixed mother liquor is low and the injection quality is not high. In order to improve the viscosity of the mixed mother liquor and improve the quality of the injection, the mine injection station tests the mechanical degradation and chemical degradation of the polymer, and in the new injection system, the air compressor is used to prepare the low pressure sewage storage tank for the mother liquor. Aeration and sulfur removal test. They used a car air compressor to blast the 300 cubic meters of low-pressure sewage storage tanks, and used two tanks. After the sulfur removal, the viscosity of the polymer mother liquor is greatly improved, which basically solves the problem caused by chemical degradation of the polymer.

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