Method of lithology identification in the Mesozoic Buried Hill of BoZhong 22-2 Structure
In the past two years,the exploration of Mesozoic buried hill in Bohai Oilfield has gradually increased.Many wells in the Bozhong 22-2 structure have been drilled in the Mesozoic with good oil and gas display,and commercial production has been tested,which confirms that the Mesozoic buried hill in Bohai Oilfield has a high exploration value.The Mesozoic lithology in the study area is mainly volcanic lava and volcanic clastic rock,and the regional lithology is complex,which is difficult to identify on site.By analyzing the characteristics of lithologic thin section and mineral element characteristics of different lithologies of Mesozoic buried hill,the author has established a logging identification method for Mesozoic lithology.This method has been applied to many wells in the Bozhong 22-2 block,which plays a guiding role in the decision-making of drilling operations in the Mesozoic buried hill.
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