Abstract
In this article, the authors have done statistics on the parameters of 3D seismic field work using new methods of attribute analysis to extract structural features. In tectonic terms, the study area is confined to the central part of the South Mangyshlak trough. The considered structures of Ulkendale-Tuchisken are located within the Zhazgurli depression and the big Mangyshlak flexure. Within the Ulkendale structure, Tuchisken were mapped by previous 2D seismic surveys. The authors revised the geological structure of the area on the basis of 3D seismic data, which made it possible to obtain new data, both on the structure of the main structures, and to identify new promising objects within the Triassic and Jurassic complexes. The Ulkendale uplift along reflecting horizon V2II (the top of the carbonate unit A of the Middle Triassic) has a sublatitudinal strike and is bounded from the northeast and southwest by two tectonic faults. The Tuchisken uplift is located to the east of the Ulkendale structure, occupying a higher hypsometric position, and has a distinct two-domed structure with a slight deflection.
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