f Classifying of East Kazakhstan Sedimentary Basins and their Oil and Gas Potential

Kazakhstan area is divided into two oil and gas geological regions - West Kazakhstan and East Kazakhstan respectively. Basing on the performed analysis of East Kazakhstan area evolution, the positioning of sedimentary basins within East Kazakhstan area has been done. Comprehensive analysis of previously acquired and new geological and geophysical data has been able to create the new geological models of East Kazakhstan sedimentary basins and generate the new exploration conception. East Kazakhstan sedimentary basins have been classified into three types: intraplatform, intracontinental and intrafolded. Intracontinental basins are referred to two subtypes related to the areas of stable and nonstable Caledonian consolidation. Intrafolded basins are subvidided into foredeep and intermountain ones. The suggested "three-staging" of sedimentary succession of the basins is allowed to have a new look onto the oil and gas potential of East Kazakhstan area and new hydrocarbon resources estimate has been performed. The further serious study of relatively unexplored but highly prospective basins is recommended.