time average equation

The relationships between elastic properties and gas hydrate/ free gas concentration are presented based on the models of weighted time average wood's equation, seismic wave propagation in three phases effective medium and elastic modulus.

基于时间平均-Wood加权方程、三相介质波传播理论模型和弹性模量模型，计算并阐述含天然气水合物岩石弹性参数与水合物饱和度、含游离气岩石弹性参数与游离气饱和度的关系；

With the help of time-average equation and4D ( time migration) seismic technique, residual oil distribution predicting method is developed.

采用时间平均方程和时移地震技术，得出了预测剩余油分布的方法。

On the basis of acoustic impedance inversion, sand percentage section and sandstone porosity section are made using time average equation and interpolation formula. These two sections are significant to the extrapolation of logging data under ideal condition.

在波阻抗反演的基础上，利用时间平均方程和内插公式做了砂岩百分含量剖面和孔隙度剖面，这两种剖面在比较理想的条件下，对测井信息的外推有重要参考意义。

The extended time average equation, a combined model introduced in this paper, can predict the porosities of muddy sand reservoirs only by absolute seismic velocities before exploratory drilling, and provide reliable quatitative information for an integrated evaluation of clastic reservoir quality.

本文提出的扩展时间平均方程组合模型，能够在钻井之前仅根据地震绝对速度，预测出泥质砂岩储层的孔隙度，为储层性能的综合评价提供有力的依据。

Application of extended time average equation in the prediction of porosities of clastic reservoir rocks

扩展时间平均方程在碎屑岩储层孔隙度预测中的应用

The results show that static residual oil saturation can be obtained by time-average equation and on the contrary dynamic residual oil saturation ( the change rate of saturation) can be gained through integrated time-average equation with time migration seismic technique.

结果表明，由时间平均方程可以求得静态剩余油饱和度；将时间平均方程与时移地震相结合，可以获得动态剩余油饱和度（饱和度的变化率）。

With the increase of overlying effective pressure ( p), the linear correlation between stepout and porosity declines, which shows that Wyllie time average equation is sensitive in the low-pressure range.

随着上覆有效压力（p）的增大，时差与孔隙度的线性相关程度减弱，说明Wyllie时间平均方程在较低压力范围内敏感；