interval velocity

Not only more accurate inversion results compared with constant velocity scan, but also accurate average interval velocity ratio and interval velocity ratio at the both sides of reflector were obtained.

实践证明，利用该方法不但可以获得比常速度比值更精确的反演结果，而且可以得到较准确的速度平均比值和上、下层的速度比值。

The method of employing DIX formula to get interval velocity from the spectrum of horizontally stacking velocity is only applicable to hori-zontal layered-medium.

根据水平迭加速度谱用DIX公式求取层速度的方法，只适用水平层状介质。

Analysis on the characters of seismic reflection, gravity filed, interval velocity, rock's density, tectonic features of depression, well_to_well interpretation and sedimentary facies of surroundings proved that Mesozoic marine strata are widespread in the eastern area of Pearl River Mouth basin.

从地震反射特征、重力场特征、层速度特征、岩石密度特征、坳陷构造形态特征、连井解释以及区域沉积相的研究，多个方面阐明了在珠江口盆地东部地区广泛存在中生代海相地层。

Then using a recursion formula for the seismic velocity spectrum and interval velocity, the velocity values having the same time domain with the oil/ gas geologic body are picked up and calculated.

再利用地震速度谱和层速度递推公式，分别拾取和计算与油气地质体同一时域的速度值。

Three interval velocity models and two interpretation methods are designed and the underground geological conditions in the study area are simulated.

设计了3种层速度模型和2种层速度解释方案，对研究区地下情况进行了模拟。

One is the construction of interval velocity model in depth domain, including initial velocity building and velocity model modification.

层速度模型的建立分为初始速度模型的建立和修正速度模型。

The relationship between stack velocity and interval velocity was deduced in depth.

导出深度域中均方根速度与层速度之间的关系；

There is a certain functional relation between seismic interval velocity and formation porosity asas residual porosity.

地震层速度与地层孔隙度、剩余孔隙度之间存在一定的函数关系.

The error formula for interval velocity derived from Dix formula is given and the error factors are divided into several categories.

本文给出了Dix公式计算层速度的误差公式，并对误差因素进行了分类。

The usual method for obtaining interval velocity is to derive stacking velocity from velocity spectrum, then to calculate interval velocity by Dix formula.

目前普遍采用的方生是由速度谱先求取叠加速度，然后再用Dix公式求取层速度；

Ray tracing with constant velocity gradient and inversion of 2-D interval velocity

常速度梯度射线追踪与二维层速度反演

Interval velocity filling method velocity-field-built is very useful for foothill thrust belt, whose core is to acquire interval velocity correctly.

层速度充填法速度建场是山前冲断带的一套建场方法，核心是准确求取层速度。

At the same time, the interval velocity derived from the time_ shift_corrected spectrum τ 0 is more accurate than that derived from the traditional Dix_equation_calculated stacking.

同时，用时移动校正τ0分析谱计算层速度较以往用Dix公式由叠加速度计算层速度精度要高。

Based on the known interval velocities obtained from the lithologic log and sonic log, this paper presents a way of estimating the sand-shale ratio corresponding to the interval velocity at different well depths by using the Bayes formula of the probability theory.

本文介绍一种根据钻井中已知岩性和相应的声速测井求得的层速度，用概率论中的具叶斯公式算出不同井深各层速度值对应的泥岩比值的方法。