Wastewater cleanup method reducing corrosion impact on pipelines and equipment of oil stabilization production

Abstract

The object of research in this article is the wastewater of oil stabilization production. Wastewater from oil refining and petrochemicals is highly toxic and poses a serious environmental hazard with existing wastewater volumes. The purification of these effluents to the parameters stipulated by the current regulatory requirements is practically impossible by traditional methods. In addition, in some cases, high contamination of water used in technological processes leads to significant economic losses, often irreversible. The low efficiency of wastewater treatment in the oil stabilization production negatively affects the reservoir pressure maintenance system for a number of reasons, one of which is an increased content of suspended solids that cause the formation to be calcified in the bottom-hole zone and lower well injectivity, which, in turn, leads to significant production losses oil. The actual service life of sewage pipelines containing hydrogen sulfide and oxygen does not exceed two years. The overhaul period of operation of pumps in the wastewater transport system is 0.2–0.3 years. The low efficiency of wastewater treatment is associated with the use of a morally obsolete system of treatment facilities, one of the significant drawbacks of which is the presence of open settling ponds. Lack of recycled water supply affects the costs associated with the use of fresh water. The volume of fresh water purchased for technological needs is estimated at thousands of cubic meters per day. At the enterprise under consideration, treatment facilities with a traditional technological scheme function. The authors of the article identified the reasons for the lack of effectiveness of these facilities and concluded that it is necessary to improve technologies and wastewater treatment schemes.