This study is aimed at analyzing the content of hydrogen sulfide in the air of the city of Atyrau, located in the northern part of the Caspian Sea of the Republic of Kazakhstan. The analysis was carried out on the basis of monitoring the indicators of the Republican State Enterprise "Kazhydromet" from 8 points located in different directions from the Atyrau oil refinery. Measurements of atmospheric air pollution are made by the GANK-4AR gas analyzer designed for continuous automatic measurement of concentrations of pollutants in the atmospheric air. Hydrogen sulfide was selected as an indicator air pollutant. Atyrau oil refinery is the main object of pollution of the territory of the city of Atyrau, located in the western part of the Republic of Kazakhstan, on the shore of the Caspian Sea. The results obtained show that the content of hydrogen sulfide in the territory of the city of Atyrau in most places shows an excess of the maximum permissible concentration. Especially the excess is observed in the north-western part up to 4-8 maximum permissible concentrations. At two points (in the north-eastern and western parts), the content of hydrogen sulfide did not exceed the maximum permissible concentration.

В статье проведен анализ радиационного фона в зданиях и общежитии Атырауского университета имени Х.Досмухамедова. Исследования проводились дозиметром ДРГ-Т101 в декабре 2019 года на трех уровнях: на полу, в 50 см и 100 см от пола. Исследования показали, что все результаты измерения не превышают предельно-допустимой дозы. Радиационный фон был измерен в 4 учебном корпусе, в спортивном комплексе «Жайык», в главном учебном корпусе и общежитии №3. В 4 учебном корпусе на уровне пола в холле и некоторых аудиториях значения радиационного фона выше чем на других уровнях, что возможно связано с использованием материалов, обладающих небольшой активностью. В главном учебном корпусе отмечаются небольшие превышения в отличие от других в некоторых кабинетах на уровне пола. В спортивном комплексе «Жайык» отмечаются наименьшие показатели по сравнению с другими зданиями. В то же время в самом здании наибольшие показатели характерны для спортивного зала. В доме студентов общежития №3 сравнительно низкие показатели во всех комнатах и холлах. Небольшие увеличения отмечаются с наружной части общежития. Самые высокие результаты были показаны в деканате главного корпуса и кабинете русской филологии, самые низкие - в холле спорткомплекса.В общем радиационная обстановка на территории университета стабильная и находится в пределах нормы.

In this article, a monitoring study was conducted on the content of hydrogen sulfide in the air of the city of Atyrau, the exceeded content of which is associated with reclamation work in the evaporation fields, where industrial wastewater from the Atyrau oil refinery and household water from all over the city have been drained for decades. Monitoring was carried out for the period from September 2021 to June 2022 on 15 observation points recorded by the Republican State Enterprise "Kazhydromet" through the mobile application “Air Kz". The measurements were carried out by the GANK-4AR gas analyzer. The data were analyzed taking into account the maximum permissible concentrations, the repeatability of concentrations of impurities in the atmosphere, the standard index, taking into account the average sample values of hydrogen sulfide content at 10 points out of 15, where increased hydrogen sulfide content was noted. Of the remaining these 10 points, the highest value was noted in the Drag and drop AOR (Atyrau Oil Refinery) point, the hydrogen sulfide content in which, according to the average maximum values, exceeded more than 36.5 MPC (maximum permissible concentration). In general, by month, we note that high values for the average values of the maximum hydrogen sulfide indicators were noted in September, April and June months. Especially strong increase is characterized during warm periods in industrial areas and residential areas as NCOC No. 109 (Vostok), NCOC No. 110 (Privokzalny), NCOC No. 112 (Akimat), NCOC No. 111 (Zhilgorodok), NCOC No. 113 (Avangard) and NCOC No. 114 (Zagorodnaya) points.

This article analyzes the content of the chemical composition of groundwater and wastewater of the Tengiz deposit located in the Zhyloy district of Atyrau region of the Republic of Kazakhstan. This analysis is necessary to determine the deposition of inorganic salts in oilfield equipment. The analysis shows that the content of chloride anions and magnesium cations prevails in groundwater and wastewater. Thus, the content of chloride anions exceeds the content of other anions up to 2-3 times of sulfate anions in groundwater and wastewater and up to 2.5-5 times of bicarbonate anions in groundwater and 17-27 times in wastewater. Among the cations, the maximum values are characteristic of magnesium cations, whose content exceeds the calcium content by more than 3.5 times in wastewater and more than 6.5 times in groundwater. In addition, the magnesium content exceeds more than 5 times the content of the sum of sodium and potassium ions. Thus, according to the results of the study, it was determined that the main salts affecting the oilfield equipment at the Tengiz field are magnesium chloride salts.

This work completes the thorough petrophysical interpretation of 46 wells, as well as a technical feasibility analysis. Even though the acoustic logging was of very poor quality, work was done to get it ready for use in creating synthetic seismograms that accurately represented the section. The sle.28 Karagie Severny, which was drilled in 2012 and has significantly better GIS quality, was used to control this operation. Through a dynamic analysis, the shooting system's (footprint) influence on the distribution of the amplitudes at the Karagie Severny site was not eliminated during data processing, but it was removed during the re-processing. As a result, the findings for Karagie Severny should be taken with a grain of salt because the initial data's quality was not considered when choosing the sites for the suggested wells. However, the seismic facies analysis in two forms—classical and cluster—showed the presence of at least three primary facies complexes, which are reflected in both formed, with a more precise distribution in accordance with cluster analysis.