但由于油藏受构造和流体性质的影响，地层压力在纵向和横向上呈现出多种有规律的变化。

But because structure and fluid property have influence on reservoir, formation pressure presents varied regular change longitudinally and transversely.

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粘度是表征流体性质的一个重要物理量。

Viscosity is an important physical measure of fluid nature.

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本文尝试把功率谱用于测井信号处理，并对储层的流体性质进行识别。

In this paper, spectrum is used for logging data processing and identifying the fluid property of reservoir.

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