It uses tubing string transmission method and add a directing short between initiator and depth short.
其利用油管输送射孔管柱的方式,在起爆器与深度短接之间接入一定方位短接。
参考来源 - 定方位射孔工艺技术研究Through research,the net covered sand has the following features:high permeability,preventing covered sand spit under certain pressure and displacement and realized multi layers sand control in one time sand control pipe.
研究认为,KV-3型网络覆膜砂可以人为控制固化,同时具有较高的强度和渗透率,用一次防砂管柱可以实现多层防砂施工的目的。
参考来源 - 可延时固化的KVAlso the research indicated that, upside the steel structure does not badly influence the lower part concrete pipe column under the temperature function thermal distortion.
且研究表明，上部钢结构在温度作用下的温度变形对下部混凝土管柱的侧向位移影响不大。
参考来源 - 温度作用下火力发电厂空气冷凝汽器支架结构体系研究·2,447,543篇论文数据，部分数据来源于NoteExpress
这些管柱闸板有效地密封了有限范围内的管柱直径。
These pipe RAMS effectively seal a limited range of pipe diameters.
因此，研究水平井测试管柱的受力及变形具有重要意义。
Therefore, it's important to make research on the force and deformation of tubing string.
多级注水泥作业用来在对长套管柱注水泥时避免使地层破裂。
A multistage cement job is used to avoid fracturing the formation when cementing long casing strings.
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