Production attitude of buried-hill inside formation is initially determined by using variable angle formation dip treatment and single point artificial calculation method.
利用变角度地层倾角处理和单点人工计算法，初步确定了潜山内幕地层的产状；
This paper mainly points at produced bigger deviation problem when apply formulas about the hydraulic calculation of DIP in recent years, and analyses some common formulas about head-loss.
本文主要针对近年来普遍使用的球墨铸铁管在套用已有的水力计算公式进行计算时产生偏差较大的问题，对常用的几个水头损失计算公式进行了一些分析。
Calculation of practical data from well Qiao 7 of Jiangsu oilfield demonstrates that formation dip is an effective and important parameter in the study of formation collapsed pressure.
江苏油田桥7井地层坍塌压力计算实例表明，地层倾角对地层坍塌压力有较大影响，因此在研究地层坍塌压力过程中应充分考虑地层倾角。
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