The organic abundance of Beipiao Formation hydrocarbon source rock is not very high and belongs to poor to middle grading.
北票组烃源岩有机质丰度不高，属差—中等烃源岩；
Igneous rock stratum in Daqing is the world-class difficult drilling formation. The rock drilled in the stratum have high drillability value and poor adaptability with drill bit.
大庆油田火成岩地层是世界级难钻地层，钻进过程中该地层岩石表现为可钻性值极高，地层与钻头适应性差。
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