临界流压是地层的特征参数，不随地层压力发生变化。
The critical flow pressure is a characteristics parameter which does not change with reservoir pressure.
随着井底流压降至某一临界值， 岩石骨架开始出现屈服。
When the flowing bottom hole pressure decreases to a critical value, the matrix will begin to yield .
本文方法思路清晰、原理正确，充分发挥了流压监测资料的作用。
This method has a clear train of thought and a correct principle, and it takes full use of flowing pressure testing data.
达西定律表明，油井地层压力与井筒产液量和井底流压具有相关性。
Darcy's law indicates that formation pressure of an oil well has some correlativity with wellbore fluid producing volume and bottom hole flowing pressure.
无限大地层中—口间歇试采生产井的地层压力分布及井底流压变化规律；
The rule of reservoir pressure distribution and bottom hole flowing pressure alteration of a periodic trial-produce well in infinity subterranean formation.
次流压比的增加将导致激波向扩张段上游移动，且喷管矢量角不断增加；
Along with the increase of the secondary flow pressure ratio, the shock move toward upstream divergent section and the thrust vector angle gradually increases;
通常人们采用气井某一时刻的稳定产能方程结合废弃井底流压来计算废弃地层压力。
The abandonment formation pressure(AFP) of gas well is usually calculated by stable productivity equation and abandonment flowing bottom hole pressure.
提出了油气井临界井底流压和安全产量的概念，对科学地管理油气井有着一定的现实意义。
The paper presents the conception of bottom-hole critical flowing pressure and secure production of oil well. It is of practical significance for management of oil well.
以多相流理论为基础，结合我国油田的具体情况，介绍了一种计算抽油井井底流压的方法。
On the basis of new research results in vertical multiphase flow and taking into account our oilfield conditions, a method for predicting flowing bottom-hole pressure in pumping Wells is presented.
两相流压降特性是两相流稳定性研究中的重要特征参数，不同类型的不稳定有不同的压降特性与之对应。
Two phase flow pressure drop characteristic is an important parameter in the study of two phase flow stability.
给出了极限井底流压和产量拐点的求解方法，分析了启动压力梯度、流体性质等因素对低渗透油藏油井产能的影响。
The effects of reservoir fluid property in high and low pressure and the starting pressure gradient on the percolation laws were taken into account in this model.
分析认为，周期注气量、注气速度、浸泡时间和生产过程中的井底流压及降压方式都是影响单井吞吐效果的重要因素。
The study shows that cyclic steam injection rate, soaking time, flowing bottom hole pressure and blowdown mode are important factors influencing the effectiveness of single well steam stimulation.
利用牛顿力学、水力学、运动学原理，计算出泵吸入口以上泡沫流体平均密度和流压，并应用于实际生产及二流量试井，取得了好的效果。
Both the average density of bubble fluid above the pump intake and flowing pressure can be obtained using the theory of Newton mechanics, hydraulics and kinematics. The method ha...
在注水开发过程中，采用较高的注采比，保证主力油层注够水，选择油井合理流压和生产压差，对实现较长时期的高产稳产是十分重要的。
To ensure prolonged stable high production, it is necessary to use a high injection-production ratio so as to ensure that enough water is injected into the main pay…
在油气两相管流中，压降和持液率的计算在工艺计算中占有重要的地位。
In two-phase oil and gas flow, the calculation of pressure drop and liquid holdup plays an important rule in technological calculation.
对有压瞬变流系统提出整体可控性概念。
The conception of integral controllability of pressurized transient fluid systems is presented.
离心泵和混流泵常见的压水室是螺旋形的，称为涡壳。
Centrifugal and mixed flow pumps pressurized water chamber is a common spiral-shaped, called the volute.
那么紧急停车的原因是什么呢？超压、过流、超温、振动都可能引起。
Now, what are the causes of an emergency shut-down? They may be caused by excessive pressure, flow, temperature and vibration.
实验发现环状流区高气速时的压差波动分维数大于1.5 ，在其它流型内都小于1.5。
The fractal dimension of the fluctuations are lower than 1.5 in all flow regimes besides the annular flow with great gas superficial velocity.
利用阻力压降来检测两相流参数具有显著的优势。
It has obvious advantage to use resistance pressure drop to measure the parameter of two-phase flow.
在多种参数下，通过调节弧压、进气量等观察了其对弧流的影响。
The influences on the beam current are observed by adjusting arc voltage and gas injection at different cases.
对垂直同心环形管内上升气液环状流的截面含气率及压降预测进行了研究。
In this paper, the prediction of void fraction and pressure drop for upward gas-liquid annular flow in a vertical annulus is studied.
这些申请专利的换热器由于流长短而具有传热高、压降低的特点。
These patented exchangers have high heat transfer with low pressure drop because of short flow length.
该系统解决了电动机启动中电流过大的问题，并且实现电动机的过压、过流、欠压等各种故障的数字显示。
The device can solve the problem of over current in electromotor start up process, and has the digital displaying of fault such as under voltage, over voltage and over current, etc.
该系统解决了电动机启动中电流过大的问题，并且实现电动机的过压、过流、欠压等各种故障的数字显示。
The device can solve the problem of over current in electromotor start up process, and has the digital displaying of fault such as under voltage, over voltage and over current, etc.
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