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碎屑流沉积是中国东部中、新生代陆相断陷湖盆陡坡带冲积扇砂砾岩扇体油气藏中最重要的油气储层。本文在济阳坳陷东营凹陷北部陡坡带永安冲积扇砂砾岩体大量岩心观察基础上,论述了断陷湖盆陡坡带碎屑流沉积物的沉积特征,提出了碎屑流沉积单元垂向序列的三种形式,探讨了单期冲积扇层序完整序列模式和储集特征,对陆相盆地冲积扇沉积学和冲积扇油藏研究具有一定理论和实践意义。
Debris flow deposition is the most important oil and gas reservoir in alluvial fan conglomerate fan oil and gas pools in the steep slope of the Meso-Cenozoic continental rift lacustrine basin in eastern China. Based on the observation of a large number of cores in the Yongan alluvial fan conglomerate in the northern steep slope of the Dongying Sag in the Jiyang Depression, the sedimentary characteristics of the debris flow sediments in the steep slopes of the rifted lake basins are discussed. The vertical sequence of debris flow sedimentary units It is of great theoretical and practical significance to study the alluvial fan sedimentology and alluvial fan reservoirs in continental basins.