To increase the oil recovery of productive oil-bearing reservoirs, the method of increasing reservoir pressure is used. It consists of pumping process water into the oil-bearing horizons. To increase the long-term intake capacity of injection wells, this water is purified from the suspended substances.
This article presents treatment facilities for the preparation of industrial water, including the use of pressure hydrocyclones and various hydrocyclone installations for its treatment. The paper presents the results of the research on water purification from suspension in pressure cylinders of Kazan State University of Architecture and Engineering. The settling time for water purification from suspended substances, which was pre-treated in pressure hydrocyclones, was determined.
The results obtained allow us to design treatment facilities with devices of the «block hydrocyclone-sump» type, in which the reagent-free preparation of technical water used for flooding productive horizons is carried out.
Studies of water purification processes from suspension in hydrocyclone installations are of high scientific and practical significance for the oil fields of Russia.
Recently, the amount of natural waters contaminated with petroleum products, which enter surface sources together with wastewater, has increased. Therefore, the issues of natural water purification of petroleum products are given great importance. Purification of natural waters from petroleum products is possible by sorption and ultrafiltration methods. Kazan State University of Architecture and Engineering conducted research on the purification of natural waters from petroleum products in adsorption filters using various sorbents, as well as membrane separators with ultrafiltration modules from various manufacturers. As a loading of sorption filters, it is recommended to use activated charcoal as a sorbent that is optimal in terms of price and quality of water purification. The membrane modules manufactured in Europe and the United States, have a high cleaning effect from petroleum products and a sufficiently high productivity. However, they are extremely expensive.
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