The echo time image of cir- cumferential borehole imaging log(CBIL)can visually depict the behaviors of borehole wall such as wellbore avalanche, fracturing under reservoir bed stress.

• 井周声波成像测井(CBIL)回波时间图像能够直观地反映储层应力作用下的井壁表现如井眼崩落、裂缝等,根据这些应力响应特征可以判断储层的应力方向。