The nozzle geometric parameters included hole number and diameter, hole angle and hole length-diameter ratio(L/D).
喷嘴结构参数包括喷孔数、喷孔直径、喷孔夹角和喷孔长径比。
Hole Angle should not exceed 15 degrees any where in the hole unless down hole geological conditions induce such deviation, such as acute fault intersections.
井斜角在井眼任何地方不应超过15度，除非井下地质条件引发了此种偏离，如严重的断层交叉。
And the variation law of the hole collapse pressure of extended reach well along with hole Angle and azimuth mostly decided by the status of the stratigraphic in-situ stress.
大位移井井壁坍塌压力随井斜角与井斜方位角的变化规律主要由地层的原地应力状态决定。
And the variation law of the hole collapse pressure of extended reach well along with hole Angle and azimuth mostly decided by the status of the stratigraphic in-situ stress.
大位移井井壁坍塌压力随井斜角与井斜方位角的变化规律主要由地层的原地应力状态决定。
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