**1.2 Data and materials**

The relevance of the application of effective innovative methods in the exploration of hydrocarbon fields is currently growing due to the emerging trend of depletion of oil and gas fields in operation.

An urgent task is to develop algorithms for solving geological problems to replenish Kazakhstan's mineral resource base through the exploration and development of new hydrocarbon fields [1, 2].

In 2019, LLP "SPC GEOKEN" Company performed integrated geophysical study to identify oil and gas prospective areas at the Central Ustyurt system of dislocation and in the southeastern part of the South Mangyshlak-Ustyurt system of depressions to solve these problems.

An independent role in these studies was assigned to aeromagnetic exploration with the solution of specific geological problems.

An aeromagnetic survey was conducted using the GT-MAG-2 airborne geophysical system, with flight lines spaced 1000 m apart and flown at an altitude of 100 m above the ground surface. The daily variations of the magnetic field were taken into account by the PBM Pico complex based on a CS-3 cesium magnetometer.

The TrimbleR7 GNSS L1/L2 dual-frequency GPS receiver was used as a ground reference station for geodetic referencing. The alignment accuracy of the survey route in plan was 1 m.

The field processing of aeromagnetic survey data was performed in two stages.

At the first stage, field processing was carried out, during which correction procedure was made for the deviation of instruments, daily variations in the magnetic field, and tie-up of survey lines using the statistical equalization method.

At the second, cameral stage, the following procedures were performed:

