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has been cited by the following article:

• TITLE: Method and Description of Sedimentary System Characterization Based on Sequence Stratigraphy

  AUTHORS: Jianmin Zhang, Hui Cai, Honglin Yue, Pengfei Mu

  KEYWORDS: Middle Section of Shasan, Sequence Stratigraphy, Sedimentary System, Characterization

  JOURNAL NAME: Journal of Geoscience and Environment Protection, Vol.12 No.5, May 20, 2024

  ABSTRACT: A Oilfield is the most representative mid to deep oil field in the Bohai Sea, with the main oil bearing intervals being the upper and middle Shahejie-3 sections of the Paleogene Shahejie Formation. By combining well seismic analysis, the middle section of Shahejie-3 is divided into high-level system tract and forced lake retreat system tract, corresponding to the II oil formation and I oil formation, respectively. Using sequence stratigraphy methods, based on seismic profiles and drilling lithological cycles, the high stand system tract is divided into 5 stages of delta progradation. The first and second stages are high angle S-type progradation with large sedimentary thickness, the third stage is oblique progradation, and the fourth and fifth stages are S-oblique composite progradation; By combining seismic data, we characterized the large-scale (8 small-scale) progradation bodies of 5 periods, clarified the distribution characteristics of reservoir planes, and laid the foundation for the later exploration of oilfield potential.