分析结果表明：阀内流道的等效阻尼长度和压力反馈腔体积是影响阀出口压力的重要因素。
To this end, it is detected from the simulation results that the equivalent valve damping length and decompressing chamber volume significantly affect the outlet pressure.
DAS技术增加了井筒的声波测量数据，提供额外的数据来描述井内流道，进一步提高了分析研判能力。
DAS technology adds an acoustic survey of the wellbore, providing a complementary result to characterize flow paths in the well, further enhancing analytic capabilities.
本文用混合隐式特征线法求解了井内流道中的瞬态波动压力问题，给出了弹性管和可压缩流体在井内各流道组合的压力波波动方程和定解条件。
By using the combined implicit characteristic line method, the calculation of the transient surge pressure in the flow conduit of a drilling well has been resolved in this paper.
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