The principle of wellhead pressure pulsation technology is to pressurize the sealed annular with hydraulic pulse pressure,the annular cement slurry will then keep moving up and down due to the micro-compressibility of the fluid,and the cement bond quality can thus be improved.
井口脉冲加压是注完水泥后给密闭的环空施加水力脉冲压力,利用流体的微可压缩性使环空水泥浆处于上下往复活动状态来改善水泥浆凝固特性,达到提高水泥胶结质量的目的。
The basic reason is that the pulse pressure, produced by the pulse current, affects the nucleation and growth of the alloy.
其主要原因是脉冲电流产生的脉冲压力对晶核的形成和长大产生了影响。
This paper studied imbibition law and influencing factor of low permeability sandstone under normal temperature and pressure and pulse pressure through self made experiment apparatus.
文中采用自行研制的实验装置,通过大量的室内实验研究了低渗透砂岩常温常压以及脉冲压力条件下的渗吸规律及其影响因素。
Pressure pulse from the conventional approach system deteriorates the paper formation,this paper discusses the causes of the pressure pulse,analyzes the low pulse mechanism of the low pulse pulp pump and presents a 3D design method for the low pulse pulp pump of approach system.
研究了影响纸页成形的主要压力脉冲源———上浆泵产生压力脉冲的原因,揭示了低脉冲浆泵的结构机理,提供了一种设计低脉冲浆泵的三维设计方法。
The experimental results indicate that, in the region two diameters of the nozzle exit downstream, the distortion of the gas jet results in the strong pressure pulse.
通过流动可视化揭示了回击现象的演化过程,利用探针排获得了射流近场区的脉动压力分布,实验结果表明:在超声速喷管出口两倍直径处,射流形貌的变化导致气体中出现了大幅值压力脉冲。
In this paper, pressure pulse propagation in two-phase gas-liquid flow for wellbore annulus is simulated when choke was controlled during kill well.
本文对压井期间节流阀调节过程中压力脉冲在井眼环空气－液两相流中传播速度进行了数值模拟。
Hydraulic system is one of the important systems in airplane, whereas pressureimpulse of airplane hydraulic system may usually tend to fatigue failure of hydrauliccomponent, and even cause serious accident, therefore hydraulic component of airplanehydraulic system must be subjected to the pressure impulse test according to the aviationstandard.
液压系统是飞机的重要系统之一，而飞机液压系统的压力脉冲可以导致飞机液压元件的提前疲劳损坏，严重时可能造成重大飞行事故，因此航标规定飞机液压系统的液压元件必须进行压力脉冲试验。
Algorithms of Multi-sensor Data Fusion for the Mud Pulse Signal
一种泥浆脉冲压力传感器信号的融合算法
Pressure and flow pulses may be used to keep the tubes unobstructed.
可用压力和流动脉冲使管子畅通。
Study on Measuring Method of Permeability by Using Storage-variable Transient Pulse Method
变容压力脉冲渗透系数测量方法研究
Based on ATmega128 mud pressure pulse simulator
基于ATmega128的泥浆压力脉冲信号仿真器
Study on detecting barometric pulse on line with pressure sensor
压力传感器在线检测高频气压脉冲的研究
Principle Analysis and Control for Pressure Impluse Test of Airplane Hydraulic System;
飞机液压系统压力脉冲试验的机理分析与控制
Development and Application of the High pressure Hydraulic Pulse Excavating Technology
高压水力脉冲破岩技术的发展及其应用
Study on the Bottom Hole Pressure Properties of the Oscillating Pulse Jet-Nozzled Bit
振荡脉冲射流喷嘴钻头井底压力特性研究
A Pressure Pulse Technique to Test Liquid Permeability of Core with Low Permeability.
测量低渗岩心液体渗透率的压力脉冲技术
Research on Hydrodynamics Simulations of Radio-frequency and Pulse-Biased Plasma Sheaths;
射频及脉冲偏压等离子体鞘层流体动力学模拟
Study on Inactivation Kinetics of POD & PG in Pulsed Electric Fields;
POD和PG酶在高压脉冲电场中失活动力学研究
Study on Solid State Fermentation Bioreactor with Pressure Pulsation Based on LabVIEW;
基于LabVIEW的压力脉冲固态发酵反应器的研究
Research on the Method of Cable Fault Automation Location Based on Low Voltage Pulse;
电力电缆故障低压脉冲自动测距方法研究
Studies on Sterilization Dynamics of Pulsed Electric Field and Co-field Chamber Improvement;
高压脉冲电场杀菌动力学及处理室改进研究
Study on the Technology of Pressure Pulse Plugging Removal and Numerical Simulation of Its Oscillating Field
压力脉冲解堵及其振荡场的数值模拟研究
Dynamic Analysis of Piezoelectric-Elastic Layered Bar Under Longitudinal Impulse
纵向脉冲作用下压电层合杆的动力分析
Effect of high pulsed electric field on biomechanical properties of fruits and vegetables
高压脉冲电场对果蔬生物力学性质的影响
Study on extrusion and exhaust process of monopropellant pulse thruster
单组元脉冲推力器挤压和排气过程分析