The value of the minimum stress is one of the most important parameters in hydraulic fracturing.

最小应力值是水力压裂最重要的参数之一。

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The effective stress of specimen is inhomogeneous. As the strain rate increases, the minimum stress value moves from the drum-shaped region to the heart of specimen.

试样内部各部位的应力大小分布不均匀，随应变速率的增大，最小应力值由自由变形的鼓形区域逐步向心部移动；

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Lateral wellbore placement required the well to be drilled into the minimum-stress direction to ensure that vertical fractures were placed along the lateral well.

水平井眼方位应该沿着最小地应力方向钻进，以确保垂直裂缝沿着水平段分布。

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Lateral wellbore placement required the well to be drilled into the minimum-stress direction to ensure that vertical fractures were placed along the lateral well.

水平井眼方位应该沿着最小地应力方向钻进，以确保垂直裂缝沿着水平段分布。

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