But because structure and fluid property have influence on reservoir, formation pressure presents varied regular change longitudinally and transversely.
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。
This paper presents an analysis of the characteristics and laws of formation of pressure waves in guns, based on the ignition process and propellant bed structure.
本文根据点火过程和药床结构，分析膛内压力波形成的特征及其规律。
It is very difficult to make tests in deep natural gas formation because of high temperature at the bottom of Wells, great pressure, complex well structure as well as the influence of hazards gas.
深层天然气地层测试难度大，主要是井底温度高、井底压力大、井身结构复杂，同时受有害气体影响。
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