Abstract
The Kungurian saliferous sediments of the Pre-Caspian sedimentary basin represented by thick stratum of rock salt with interlayered lenses of anhydrites, terrigenous and carbonate rocks. Initial thickness of these sediments estimated as 4000–4500 m at the center of the depression and 1000–2000 m on the edges of the basin. The processes of halokinesis led to formation of more than 1200 salt dome structures represented by salt diapirs and walls, ridges and salt pillows. Number of salt dome related structures of Mesozoic clastic deposits revealed by seismic exploration carried out in 70–90′s of last century are quite common on the south-eastern part of the Pre-Caspian Sedimentary basin. Most of hydrocarbon pools in post-salt clastic rocks have been discovered on fault-related anticline prospects which are derived from salt tectonics morphologically variable (Munyithya et al. Petrol Explor Prod Technol 10: 2257–2267. https://doi.org/10.1007/s13202-020-00917-1, 2020). Other potential traps anticipated in the area are stratigraphic traps, pinch-out and unconformity-related traps, trapped by salt domes and walls or by salt overhang, etc.
Highlights
Pre-Caspian sedimentary basin, covering area of more than 500,000 km2 (Fig. 1), is one of prolific oil and gas provinces with unique geological structure, and despite more than a century of exploration and production history is still remains poorly understood
Where the otherwise impermeable seal is absent, hydrocarbons were afforded avenues to migrate from pre-salt source rocks vertically into post-salt reservoirs like as Lower Triassic sandstones
No qualified source rocks have been penetrated to date within area under the study
Summary
Pre-Caspian sedimentary basin, covering area of more than 500,000 km (Fig. 1), is one of prolific oil and gas provinces with unique geological structure, and despite more than a century of exploration and production history is still remains poorly understood. Structural interpretation of newly acquired 2D/3D seismic data and historical data sets allowed to identify potentially oil-bearing traps within post-salt succession of the area under the study. Existing structure maps were modified using modern interpretation software (Kirilov and Zakrevsky 2014) with the aim to acquire additional geological information. Review of published earlier literature and reports, data from neighboring oil fields, nearby exploration areas and extensive analysis of geological-geophysical data allowed better understanding of new opportunities, leads and. Prospects and to identify different trap types within studied geological succession
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of Petroleum Exploration and Production Technology
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
