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- The key factors affecting frictional pressure loss in narrow annuli are changing annular dimensions, rotation and vibration of drill strings. 影响窄环空中摩擦压降的关键因素为环空尺寸的变化、钻柱的旋转和振动。
- friction pressure loss 摩擦压力损失
- It can not require a pressure loss. 它不会造成压力损失。
- Friction losses in the equivalent lengths of ducts constitute the pressure loss in the elbow. 管道的等量长度中的摩擦损失即构成弯管中的压力损失。
- A Novel Model of Calculating Circulating Frictional Pressure Loss in Narrow Annuli 计算窄间隙环空循环压耗的新模型
- Keywords frictional pressure loss calculations;narrow annuli;rheological property;drilling; 压耗计算;窄间隙;数学模型;流变性;钻井;
- Type 0- Full round port opening offering minimum pressure loss conditions. 类型0-全圆形端口开启度,压降损失最小。
- Propeller meters introduce small pressure losses. 螺旋浆式流量计的压力损失
- The tradeoff comes in how much permanent pressure loss can be tolerated. 平衡点在于究竟容许多少长期压力损耗。
- frictional pressure loss 摩擦压力损失
- By design of orthogonal experiment, the sequence of technological parameters of friction welding which effects of tensile strength welding joint is friction pressure,pressure and friction time. 采用正交试验设计的方法得出,摩擦焊工艺参数中对接头抗拉强度的影响的顺序是摩擦压力、顶锻压力、摩擦时间。
- Friction pressure Spinning Machine fron Australia and Advanced Computer-controlling Feather plantingMachine from Italy, whichmakes our products are outstanding in cleaning industry. 家品质合格证。
- By orthogonal experiment, the sequence of technological parameters of friction welding effecting the strength of the welding joint is friction pressure,upset pressure and friction time. 通过正交试验得出摩擦焊工艺参数中对接头抗拉强度的影响的顺序是摩擦压力、顶锻压力、摩擦时间。
- The results show that the A-t curve wave separator has a higher separation efficiency with a petty pressure loss. 结果表明,本文提出的A-t双参数曲线波形板分离叶片不仅分离效率高,而且流动损失小。
- The truss structure featured by small flow resistance,strong toughness and less pressure loss. 具有流阻小，刚性好，压力损失小的桁架式结构。
- EP-W203/H DRA is a ultra-high molecular polymer, which can reduce the pressure loss of pipe flow. 型减阻剂是一种超高分子聚合物,注入管道后可以降低管流的压力损失。
- Two-jaw hydraulic clamping ,the workpiece sawing not loose,pressure loss avoided bandsaw,band saw protection. 双钳口液压夹紧;锯切下的工件不会松动;避免压损锯带;保护锯带.
- Orifice's pressure losses are attributed to entrainment and eddy formation. 孔板的压力被认为是由卷吸和涡流造成的。
- More accurate calculation of pressure loss in narrow annuli of slim holes and coiled tubing operations is required. 在小眼井和连续油管作业的窄环空中，要求更加准确地计算摩擦压降。
- In the case of non-afterburning, its pressure loss is about one half of that of V-gutter. 不加力时，它的流阻损失很小；
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