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Meticulous Depiction of Lithology,Lithofacies and Reservoir Porosity and Permeability in the Third & Second Member of Yingcheng Formation——Based on Whole Coring Ying-3 D1 Well Drilled in the Standard Section

MIN Fei-qiong1,2,WANG Pu-jun1,YU Shi-quan3,HUANG Yu-long1,WU Yan-xiong1,LI Zhe1,REN Li-jun11.College of Earth Sciences,Jilin University,Changchun130061,China2.Offshore Petroleum Recovery Factory,Shengli Oilfield,Dongying,Shandong257237,China3.Daqing Exploration & Development Institute,Daqing,Heilongjiang163712,China  
The whole coring Ying-3 D1 well was drilled in the standard section for investigating of the upper two members of Yingcheng Formation.The overall thickness of the third member is 205.70 m and the drilled thickness of the second member is 48.75 m(unpenetrated).There are mainly five types of volcanic rocks including lava,pyroclastic lava,pyroclastic rock,sedimentary pyroclastic rock and sedimentary rock.Volcano eruptions in this well have been divided into three cycles and ten periods.The reservoir spaces have been divided into four types and eleven subclasses.Further more,there are four combination patterns of reservoir spaces.The most favorable is pores directly connect to the fissures.Four types of pore distribution and seven types of pore structures have been recognized with core observation,microscope image analysis and mercury intrusion method.The single-bias with coarse-kurtosis and double kurtosis type have the best pore distribution.The best pore structure is of the low displacement pressure-coarse pore throat.
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