Abstract: Aimed at the characteristics of Sa2+3members in Pucheng oilfield, i.e, simple and whole reservoir structure, thick pay zone, heavy inner formation heterogeneity, poor development effect, flow unit is divided by identification of drilling and logging baselevel cycle based on HighResolution Sequence Stratigraphy, so as to compare flow unit by correlation of baselevel cycle. Reservoir is subdivided into nineteen subzones. After subdivision some internal contradiction is transformed to interlayer contradiction, which will supply some warrant to development adjustment.
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Key words: highresolution sequence stratigraphy, baselevel cycle, flow unit, Pucheng oil field