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- MODIFICATIONS TO THE CALCULATION METHOD OF FLOWING PRESSURE GRADIENT IN GAS WELL TUBING 气井油管流压梯度计算方法的改进
- CALCULATION OF FLOWING PRESSURE GRADIENT IN TUBING OF WATER-CONTAINING GAS WELLS 含水气井油管流压梯度计算
- There is no pressure gradient through the thickness of the film. 贯穿流体膜厚度无压力梯度。
- A number of overall correlations have been developed for the prediction of the pressure gradient in the vertical flow of gas-liquid mixtures. 为了预测气液混合物垂直流动的压力梯度，已经得出了许多整体相关规律。
- The experiment of single-phase flow through low permeability core shows that during fluid flow there exists start-up pressure gradient. 摘要低渗透岩心单相渗流实验表明，流体渗流时存在启动压力梯度。
- The static pressure gradient in cyclone air classifier can have influence on the test and measurement for its flow fields by five-hole probe. 用五孔探针测试旋流式气力分级机流场时，分级机内存在的静压梯度会对测试产生影响。
- The calculation results show that the pressure gradient decreases with the annular eccentricity increasing and increases with the flow rate increasing. 结果表明，压力梯度随环空偏心度的增大而减小，随流量的增大而增大。
- The threshold pressure gradient of low permeability sandstone was studied experimentally by measuring the pressure attenuation in an unsteady seepage flow. 为了研究低渗透砂岩的启动压力梯度,设计了一种非稳态渗流中测量压力的试验方法。
- Mesoscale Nonhydrostatic and Hydrostatic Pressure Gradient Forces Theory. 中尺度非流体静力和流体静力气压梯度力理论。
- The smaller the permeability, the bigger the start-up pressure gradient. 渗透率越小，启动压力梯度越大。
- In addition, numerical simulations of turbulent flow over riblet surface are carried out in 7 kinds of pressure gradients.The effect of pressure gradient is analyzed. 同时还对7种压力梯度下沟槽表面流场进行模拟，研究了压力梯度对减阻效果的影响。
- However, studies have shown that flow in low permeability media does not follow Darcy's law, and that a starting pressure gradient (SPG) occurs in the percolation. 建立了低渗非达西渗流相对渗透率计算方法,导出了计算公式,并进行了非稳态流动实验。结果表明:在低渗油藏相对渗透率曲线中,束缚水和残余油饱和度较高,两相渗流区范围较窄;
- Time dependent calculation for a suddenly imposed pressure gradient has shown that variation of the cross sectional area reduces inertial effect in the contraction flow region. 压力差为阶跃变化的情况下数值计算结果说明了收缩部的断面积的时间变化减少了收缩部的惯性效果。
- At last, the approximate calculation methods of pore water pressure and flowing pressure are presented. 给出土坡稳定性分析中对孔隙水压力和动水压力的近似计算方法。
- The atmosphere pressure gradient is an inverse measure of the spacing of the isobars on a weather map. 气压梯度与天气图上等压线的间隔大小成反比。
- IPR curve is a kind of characteristic curve deseribing the basis relationship between oil well production and bot-tomhole flowing pressure. IPR曲线是描述油井产量与井底流动压力的基本关系曲线。
- There should be pressure difference display device when there is a pressure gradient. 有压差梯度的区域无压差显示装置。
- The formation pressure gradient curve in the same depth of logging is computed by equivalent depth method. 通过等效深度法计算出与测井曲线采样深度对应的地层压力梯度曲线。
- In addition, the effect of startup pressure gradient of Bingham fluid in stratum pressure distribution are analyzed. 分析了宾汉流体的启动压力梯度对地层压力分布的影响。
- The daily production of swabbing well at different swabbing flowing pressure was calculated based on the mathematics model of swabbing well at flowing bottomhole pressure. 在建立定流压抽汲井数学模型基础上,分别就不同的最大抽汲流压计算了抽汲井日产量。
