倒钓保持了拟饵的水平移动，且让你能把饵控制在水底只上的某个你想要的标点。
Drop shotting keeps the lure horizontal and in one spot above the bottom for as long as you want to leave it there.
小断块油藏水平井目标点的不确定性，比一般油藏更为突出。
The target uncertainty of horizontal well in the small block reservoir is more outstanding than in the common reservoir.
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