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- polished rod sealing 光杆密封
- The new assembly can make the joint of the polished rod pass through, therefore can meet the need of new oil production technology. 这种密封盒可以使比光杆杆体直径大得多的光杆接头通过，能满足新的采油工艺需要。
- Worn crankcase piston rod seals O-rings on. 曲轴箱柱塞连杆O型圈磨损或柱塞衬套磨损。
- The polished rod fishing tool is a new type of fishing tool and is mainly used to fish long slim, not heavy rod type fishes. 光杆落物打捞器是一种新型打捞工具,主要用于打捞重量较轻的细长光杆式井下落物(如测斜仪器、测井仪器等),详细介绍了该工具的结构、工作原理及使用注意事项。
- Worn crankcase piston rod seals. 曲轴箱连杆密封件损坏。
- The unit horse head polished rod close to beam suspension gravity working point .Therefore, while pump holddown beam bending moment so small that will not cause beam broken. 本机驴头悬点距游梁吊重力作用点距离很短，所以，卡泵时游梁弯矩小，不足以造成折梁。
- Kinematic parameters of different types of pumping units, including the displacement, velocity and acceleration of the polished rod and the torque factor can be calculated easily and accurately by using this method. 为此，根据几何关系和运动特点，建立了运动学模型，提出了异形游梁式抽油机运动参数的求解方法。
- According to the static and running parameters of rod pumping wells, the methods of simulating dynamometer cards of the polished rod and pump on the basis of wave equation were setup. 摘要根据油井的静态与动态参数，建立了以波动方程为基础的抽油机悬点与泵示功图的计算机仿真模型。
- Keywords Pumping well;Wellhead equipment;Polished rod;Seal element;Aligner; 抽油井;井口装置;光杆;密封件;对正装置;
- Development of auto-adjusting sealing device of polished rod used on heavy oil thermal recovery wellhead 稠油热采井口光杆自动调偏密封装置
- Pressure energized lip-style piston and rod seals are wear compensating and prelubricated for millions of trouble free cycles. 高压带电唇式活塞和活塞杆密封的磨损补偿和麻烦百万边界润滑自由周期。
- The well-head rod sealing of rod pumping unit and its development 有杆抽油机井口光杆密封的发展
- Effects of Polished Rod Clamps on Polished Rod Fatigue Life 光杆卡对光杆疲劳寿命的影响
- Cook the meat quickly at first to seal in the juices. 一开始要大火烧肉，以便保存肉汁。
- The putty gives a good seal round the window. 窗户四周泥的油灰密封效果很好。
- Give the table a good rub with this polish. 用这上光剂把桌子好好擦一擦。
- Our foil packets seal the flavour in. 我们用锡纸包装以保持原味。
- The Leakage Calculation of the Cylinder Rod Sealing on Hydraulic Cylinder 液压缸活塞杆密封的泄漏量计算
- He had polished the table-top until it gleamed. 他把桌面擦得很亮。
- He polished off the pie and the fruit. 他很快吃完了馅饼和水果。
