Depositional features of two kinds of reservoir sandbody (loch sand bar, sheet sand) in upper Es 4 of Boxing subsag are described from the analysis of single well facies profile.

• 从单井相剖面分析出发,对博兴洼陷沙四段上亚段滨浅湖砂坝、席状砂两种储集砂体的沉积特征进行描述。