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High-Resolution Sequence Stratigraphy Study of Single Sand Body in the Development Block of Complex Fault Basin: Taking the Second Member of Nantun Formation of Su 31 Block of Hailar Basin as an Example
详细信息   
摘要

High-resolution sequence stratigraphy study of single sand body has a significant meaning for accelerating, deepening and rolling the geological characteristics cognition of early exploration and development of Hailaer Basin. Using methods and principles of high-resolution sequence stratigraphy, combining drilling, logging, seismic and analysis assay data, two long-terms, 4 mid-terms, 8 short-terms and 46 ultra-short terms of base-level cycles are recognized in Second Member of Nantun Formation of Su 31 Block of Hailar Basin. Sand body and oil-bearing sand bodies mainly develop in middle to late period of each middle base level decreased half-cycle and the early period of middle base level increased half-cycle of late period of LSC1 decreased half-cycle, early to middle period of LSC2 increased half-cycle.

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