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- There is no pressure gradient through the thickness of the film. 贯穿流体膜厚度无压力梯度。
- 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。
- When fracturing, the fracture pressure of reservoir is crucial. 压裂施工时,储层破裂压力直接决定水力压裂的成功与否。
- 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。
- 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 two kinds of statistical model are still practical and feasible approaches to calculate formation fracture pressure. 两种统计模型都不失为预测地层破裂压力的可行方法。
- 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。
- This method has been use in 12 wells for 19 predictions, proved by DST and Leak-off test to be 90. 91% success for pore pressore and 96. 15% succes for fracture pressure. 该方法经过12口井;19井次预报;已经DST和Leak off试验证实孔隙压力预报成功率为90.;91%25;
- Test results indicate that goal of high speed ignition can be attained under the pressure gradient of steepest descent. 试验结果表明，在高减压梯度下可以达到快速点火的目的。
- Many experiments justify that there is a threshold pressure gradient (TPG) in low permeability reservoirs. 试验表明 ,低渗透油藏存在启动压力梯度。
- Fracture pressure is the key parameter designed for hydraulic fracturing.On the other hand, acidizing pretreatment is one of the measures reducing fracture pressure. 破裂压力是水力压裂设计的关键参数，而酸化预处理是降低破裂压力的措施之一。
- The results showed large pressure gradient and velocity gradient of the material in the four intermeshing regions. 计算结果表明:四螺杆的四个啮合区具有较大的压力梯度、速度梯度,其混合性能明显好于双螺杆挤出机。
- The pressure gradient is osmotically generated and results from the loading at the source and unloading at the sink. 韧皮部装载：指光合作用产物从叶肉细胞输入到筛分子一伴胞复合体的整个过程。
- Release of the heat of fusion is believed to alter the pressure gradient in such a way as to diminish the destructive winds near the storm center. 人们认为融解热的释放可以改变气压梯度,结果减小风暴中心附近的破坏性风力。
- Even if the pressure gradient is partly balanced by the fluid acceleration, its order of magnitude is usually no larger than the hydrostatic gradient. 即使压强梯度部分地被流体加速度平衡，其数量级通常也不大于静压梯度。
- The software used to calculate "safe" mud weight window had been developed. Only a few parameters are needed , the software can calculate rock properties, formation pressure, in-situ stresses , collapse pressure and fracture pressure along the well bore. 在前四步的基础上，编制了“基于测井资料的安全钻井液密度窗口预测”应用软件，该软件主要利用测井资料钻前预测安全钻井液密度窗口，要求输入的参数少，操作方便，能输出岩石力学参数曲线、地层压力曲线、地应力曲线、坍塌压力、剪切破坏压力曲线与破裂压力曲线，对钻井工程具有很强的现实指导意义。
- 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。
- Through the analysis and acquisition of the seismic interval velocity, This paper has comprehensively studied and evaluated fracture pressure prediction method for the typical formations. 本文从地震层速度的分析与求取入手,对典型的地层破裂压力预测方法进行了综合评价研究。
