TITLE:
Research on the Characteristics of the Post-Salt Strata on the Eastern Margin of the Precaspian Basin
AUTHORS:
Shuqin Wang, Anzhu Xu, Hongfei Ma, Minghui Liu, Qingyin Hou
KEYWORDS:
Eastern Margin of the Precaspian Basin, Post-Salt, Stratigraphic Characteristics
JOURNAL NAME:
Journal of Geoscience and Environment Protection,
Vol.14 No.6,
June
30,
2026
ABSTRACT: The Pre-Caspian Basin is renowned for its extensive oil and gas distribution, particularly the thick salt domes developed in the upper part of the Permian system. The sub-salt area is characterized by the deposition of carbonate and clastic rock formations, which contain abundant oil and gas reserves. Numerous scholars and technical personnel have conducted detailed research on the exploration and development of sub-salt reservoirs, while relatively less attention has been paid to the post-salt formations. This paper utilizes 3D seismic data and single-well data from oil fields, and by analyzing changes in parameters such as natural gamma and interval transit time of logging curves, combined with reflection characteristics on seismic sections, delineates stratigraphic boundaries. It focuses on the characteristics of post-salt formations in the eastern margin area of the Pre-Caspian Basin, including four secondary formations: Cretaceous, Jurassic, Triassic, and Upper Permian, and analyzes the evolutionary process of post-salt formation characteristics. This provides strong support for further geological research on post-salt oil fields in the eastern margin area of the Pre-Caspian Basin.