The Study On Seismic Sequence And Depositional Facies In South Turgay Basin, Kazakhstan-With An Application Of Opendtect

Seismic sedimentologic analysis is superior to standard seismic stratigraphic analysis in mapping high-frequency sequences and depositional systems. Sequence Stratigraphic Interpretation System (SSIS) in Opendtect is the outstanding seismic analysis system. From filtering tested steering cube with different parameter could confirm the most matching approach for the area, which helped clarify sequence stratigraphy characteristic. Computer aided interpretation makes the process efficient. Combine SSIS and multi-attribute set contribute depositional systems and facies study within sequence frame, which resolution is three or four times precise than seismic. The stratal slices made from the 3D seismic volume reveal the high-resolution sediment-dispersal patterns and associated depositional systems on the relative geologic time surfaces. Neural Network in Opendtect train the sample from multi-attribute set depicts the detail sedimentologic characteristic.Depositional systems of middle-upper formation in South Turgay Basin are characterized by 2 major facies. The lower Komkol formation: prodelta, which is composed of silty sediments, deltaic plain, which consists of distributary channels, levees, and crevasse splays; The upper Akshabulak: fluvial plain, which is characterized by fluvial channels, crevasse splays, and swales.