Application and selection of the reagent to neutralize hydrogen sulfide and light methyl-, ethyl-mercaptans in oil

Abstract

The choice of an effective neutralizer for a particular field is made on the basis of laboratory studies and pilot tests. A number of laboratory tests were conducted to select a hydrogen sulfide neutralizer for oil at the loading point of the Borodino field. The studies were carried out according to the standard method of the “bottle roll test” at 45°С with various amounts of the reagent-neutralizer by bubbling oil and reagents. Laboratory tests for the selection of effective reagents-neutralizers were carried out by modeling the process of collecting and preparing oil at the loading point of the Borodino field in two stages. The results of laboratory research allowed us to choose the most optimal neutralizer, set its flow rate, and temperature of oil heating. In addition, t influence of the place where the reagent-neutralizer is introduced into degassed oil is studied. The laboratory tests made it possible to select the best neutralizer Desoulfon-SNPCH-1200, to determine its minimum specific consumption and the temperature of heating oil. The application of this reagent-neutralizer will allow doing the effective oil preparation at the loading point of the Borodino field. The amount of Desoulfon-SNPCH-1200 needed to neutralize the mercaptans depends on their content in oil and the required degree of reduction.