您要查找的是不是：
- pressure balance workover rig 不压井修井机
- Development and application of workover rig with blowout preventer. 防喷作业机的研制与应用。
- The formula of the greatest pressure value produced by hydraulic shock during braking of XXJ300/500 hydraulic energy-storing workover rig lowering pipestring is derived. 推导出了XXJ300/500液压蓄能修井机下放管柱刹车时,管路中液压冲击最大压力升高值的计算公式。
- Drilling sand pump fulfills its function of removing sand accumulation in oil well by cooperating with a workover rig. 钻进捞砂泵利用修井机为动力,上下提放油管,将砂子抽至储砂筒内,从而达到井筒清砂的目的。
- This new-style design makes driving of workover rig stable and reliable, and easy in control and operation. 这一新型设计使得液压修井机的传动稳定可靠，操作控制简单方便。
- Course of matching and method of evaluation are introduced.Finally basing on 650 workover rig,the software is tested. 介绍了匹配计算的过程和评价方法,并以650型修井机为例进行了验证。
- Power-recovering hydraulic workover rig is an energy-saving machine, and the working theory of this rig was introduced. 功率回收型液压修井机是一种节能机械,介绍了功率回收型液压修井机的工作原理。
- Finally,improvement and development have been presented about workover rig in Sic... 分析了国外修井机的特点、性能，提出了四川修井设备在研制和改造中的设想。
- This new-style design makes driving of workover rig stable and reliable,and easy in control and operatio... 这一新型设计使得液压修井机的传动稳定可靠,操作控制简单方便。
- Non-regular workover equipments are coiled workover rig,snubbing unit and all kinds of matching tools. 四川在修井时主要采用常规修井设备。
- In addtion, system design for the hydraulic energy-storing workover rig is introduced. 在论述原理、介绍设计思路的同时,还指出了设计时应如何对该机进行总体把握的分析方法。
- The dynamics equation of XXJ300/500 hydraulic energy-storing workover rig during lifting pipestring under each force grade was established. 建立了XXJ300/500液压蓄能修井机在各力档下下放管柱时的动力学方程式。
- ZJ30 truck-mounted rig can be used as both large-scale workover rig and light rig, and the compounding transmission is the core part of its transmission system. ZJ30车装钻机是一种可作为大型修井机和轻型钻机的两用新型钻机,并车箱是其动力传动系统的核心部件。
- Because of the particularity of the ocean environment, there exists great differ ence between the operating environments of the ocean workover rig and the land workover rig. 由于海洋环境的特殊性,海洋修井机井架与陆地修井机井架的使用环境有很大差异。
- The design of the hydraulic driving system for hydraulic workover rig has adopted hydraulic driving to substitute hydrodynamic driving of traditional workover rig. 液压修井机液压传动系统的设计,是用液压传动代替了传统修井机的液力传动。
- To determine dust catalyst density in the smoke of refinery set by pressure balance system. 采用动压平衡采样系统测定炼油厂催化装置再生烟气中的催化剂粉尘,结果表明,该系统比预测流速法自动化程度高,故障率低,操作简便,数据准确可靠。
- Pressure balance is also applied in WOB calculation. Field test showed that both models are reliable and the calculated results are correct. 同时也用压力平衡法计算出钻压，现场试验表明，两模型可靠、计算结果正确。
- Earth pressure balance (EPB) shield is used most extensively in shield construction. 土压平衡式盾构机是盾构法施工中应用最为广泛的盾构机。
- In visible experiment, the time of pressure balance decrease with the initial pressure of PRZ and temperature of CMT. 在可视化实验中随着PRZ初始压力的增加，以及CMT初始温度的增加，压力平衡响应时间减小。
- Tecsis pressure balances meet extremely exacting requirements. 我们tecsis所提供的压力秤,正是能完全满足这一要求的产品。
