CHARACTERISTICS OF THE STRUCTURAL UPLIFTS OF KURGANBAI AND BAYRAM-KYZYLADYR LOCATED WITHIN THE ZHAZGURLI DEPRESSION

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. Tectonically, the studied area is confined to the central part of the South Mangyshlak trough. The structures under consideration are Kurganbai and Bayram-Kyzyladyr, located within the Zhazgurli depression and the Great Mangyshlak flexure. Within the framework of the Kurganbai and Bayram - Kyzyladyr structures, previous 2D seismic surveys were mapped. The authors revised the geological structure of the area on the basis of 3D volumetric seismic survey materials, which allowed to obtain new data on the structure of the main structures. The main purpose of the authors works is to describe the structure of Kurganbai and Bayram-Kyzyladyr and to predict local objects promising for the search for oil and gas deposits. The authors present the current understanding of the geological structure of the sites under consideration, which is based on the materials of detailed 3D seismic surveys and drilling data. The raising of Kurganbai complicates the northeastern part of the Bayram - Kurganbai shaft, along the reflecting horizons V3 and V2II has a block structure. The Bayram – Kyzyladyr uplift along the V3 reflecting horizon is a brachianticlinal fold, which is divided by a series of tectonic disturbances into a number of blocks gradually sinking in a southeasterly direction. The uplift mainly consists of three half-arches adjacent to the transverse discontinuous faults.