Simulation of longitudinal wave based on frequency modulated waveform and oscillograph synchronization principle;
用调频正弦波形和示波器同步原理模拟纵波
A small angle incidence longitudinal wave for sensitive evaluation of fatigue cracks;
超声小角度纵波灵敏检测疲劳小裂纹
The wave-form of longitudinal wave and the motion state of the medium;
纵波的波形与媒质的运动状态
P-wave velocity analysis in anisotropy medium.;
各向异性介质纵波速度分析
Transmission of elastic P-wave across one fracture with improved nonlinear normal deformation behaviors
纵波在改进的弹性非线性法向变形行为单节理处的传播特性研究
In view of the monopole waveforms provided by Baker Atlas Cross-Multipole Array Acoustilog(XMACⅡ), extracting and high resolution processing methods of P-wave slowness-time are developed based on a thorough survey and study of wave division extraction methods of array acoustilog.
在充分调研阵列声波测井分波提取方法的基础上,针对阿特拉斯公司的交叉多极子阵列声波测井(XMACⅡ)提供的单极波形信息,研究纵波时差提取及高分辨率处理方法。
For seeking a way to remedy absence of formation compressional wave data in open hole,the acoustic logging data of 5 wells on beach or offshore in Dagang Oilfield were analyzed to explore the feasibility of extracting formation compressional wave signal from through-casing cross multipole array acoustic(XMAC) logging data.
为寻求裸眼井地层纵波测井资料缺失时的补救办法,对在大港油田滩海区块5口井中的声波测井资料进行了分析,试探从过套管交叉多极阵列声波(XMAC)测井资料中提取地层纵波信号的可行性。
Studied are changes of compressional wave velocity(v p) and shear wave velocity(v s ),v p/v s ratio and elastic moduli of low porous and permeable sandstone cores with the changes of gas saturation during gas driving water.
实验表明 ,10 %～2 0 %的气体可使低孔隙度低渗透率砂岩岩心的纵波速度、纵横波速比迅速下降 ;而低孔隙度低渗透率岩心的纵波主频、带宽、品质因素Q也与含气饱和度有明显的关系 ,10 %～ 2 0 %的气体可使其纵波主频、带宽及Q值显著下降 ,这种降低的趋势比纵波速度、纵横波速比更急剧更敏感。
The high quality digital array acoustic wave provides compressional wave, shear wave and stonley wave transit time.
高质量的数字阵列声波提供纵波、横波和斯通利波时差具有十分重要的作用,通过综合处理,可以得到各种岩石强度参数和岩石的破裂压力等,为油层的改造和油田的生产提供准确的参数。
Meanwhile, the variations of Lame constant and shear modulus with depth are studied for the first time, and a relationship between P wave and S wave velocity is determined.
在水饱和与气饱和两种状态下拉梅常数的相对变化量大于纵波速度的相对变化量 ,这表明拉梅常数可作为预测含油气性的有效参
In order to solve the problems encountered in P wave exploration in YGH Basin,multi wave seismic exploration has been performed on four structures of the basin.
为了解决YGH盆地纵波勘探中遇到的难题 ,在该盆地 4个构造上开展了多波地震勘探工作。
A method using proven technology of P wave acquisition and processing to invert reservoir characteristic parameters was proposed in the paper.
主要研究以成熟的纵波信息采集和处理技术为基础的反演裂隙型储层特征参数的方法。
The longitudinal wave velocity,density,Young’s modulus and peak stress of rocks were analyzed.
对经受不同高温后熔结凝灰岩、花岗岩及流纹状凝灰角砾岩的波动特性进行了研究,分析比较了三种岩石纵波波速、密度、弹性模量及峰值应力随经历温度的变化规律,并研究了纵波波速与密度,纵波波速与弹性模量,纵波波速与峰值应力的关系。
The scope of this research includes(1) the variation of peak stress,peak strain and elastic modulus with temperature,and(2) the relationship between longitudinal wave velocity and peak stress and peak strain.
通过单轴压缩试验,对不同高温后熔结凝灰岩、花岗岩及流纹状凝灰角砾岩的力学性质进行了研究,分析比较3种岩石峰值应力、峰值应变及弹性模量随温度的变化规律,并研究了峰值应力与纵波波速、峰值应变与纵波波速的关系。
Using SYC-2 type supersonic wave test instrument and 20 kHz energy transducer,the authors are able to measure the longitudinal wave velocity of frozen silty clay under different temperature and moisture conditions.
用SYC-2型超声波测试仪和20 kHz超声换能器实测了不同温度和不同含水率下冻结粉质粘土的纵波波速,对实验数据进行了分析。
P waves move faster than S waves.
纵波波速大于横波。
Seismic surveying is largely concerned with the primary P waves.
地震勘探主要研究一次纵波。
Longitudinal Wave Oblique Incidence Probe to Detect High Pressure Seamless Tube
纵波斜射探头检测厚壁高压无缝钢管
USING P-WAVE AVA FOR FRACTURE DETECTION AND FLUID RECOGNIZING
利用纵波AVA进行裂缝储层和流体识别
Theoretically multi-wave exploration is certainly superior to pure P-wave exploration.
理论上,多波勘探肯定优于单纯的纵波勘探。
Surface, or longitudinal, waves move along the surface.
一类为面波，或称纵波，它们沿地面向外传播。
Normally the shear velocity is about half of the compressional velocity.
一般地说横波速度大约是纵波速度的一半。
Theoretical Study and Dynamic FEA on Longitudinal Wave and Torsional Wave;
纵波扭转波传播理论研究与动力有限元分析
Testing study on relativity between longtudinal wave speed and density of sandwich rock
地基层状岩石纵波波速与密度相关性试验研究
Estimation of Q and inverse Q filtering for prestack reflected PP-and converted PS-waves
叠前纵波和转换波地震资料Q值提取及反Q滤波(英文)
Theoretically, the velocity of a P wave can be calculated.
理论上讲，纵波的速度是可以计算出来的。
And the phase velocity of fast wave will decrease exponentially with frequency.
快纵波的相速度随频率的增大以指数形式减小。
Experimental Investigation on Evaluation of Dips of Fracture Using Reflected Compressional Waves.
利用反射纵波评价裂缝倾角的模拟实验研究
The Research on Fractured Reservoir Prediction Using P-wave Seismic Methods;
裂缝型储层预测的纵波地震方法技术研究
longitudinal cut analysis method of ship wave
纵剖面船行波分析法
Again we call the faster wave the longitudinal and the slower wave the shear shock wave.
我们还是把较快的波叫做纵冲击波，而把较慢的波叫做剪切冲击波。
maneuveringand seakeeping basin
船模操纵性耐波性试验水池
CONFIGURATIONS OF GUN PROPELLING CHARGE AND THE LONGITUDINAL PRESSURE WAVE ALONG THE BORE
火炮发射装药结构与膛内纵向压力波