The Jinzhou 25-1 oilfield in the Bohai Bay Basin is a high-quality oilfield with a third level oil and gas equivalent of nearly 100 million tons discovered for the first time in the Liaoxi depression.The characteristics of Paleogene biological assemblages in X well of the oilfield were studied,and the biological evolution of X well block biofacies was mastered.Combined with lithology and electrical property characteristics,comprehensive studies on sedimentary environment and water depth are carried out to help further exploration of Jinzhou 25-1 oilfield.
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