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中文摘要：
为一个 choke 阀门并且用流动特征基于本地抵抗计算模型窒息阀门，我们学习了在平行的背压力之间的关系窒息汇编和开的程度窒息阀门并且开发了一个模型描绘压力政体歧管汇编。压力特征曲线的比较证明平行窒息歧管汇编包括调整压力的特征曲线， overshoot 间隔的消除，更宽的有效调整间隔和更高的系统安全的高线性比常规连续类型有明显的优点。实验室水力的实验为平行验证了一个背压力控制模型的能力窒息汇编精确地控制压力。这研究具有大理论、实际的意义进一步改进表演窒息在很好钻的管理压力使用。
英文摘要：
Based on the local resistance computation model for a choke valve and using the flow characteristics of choke valves, we studied the relationships between the back pressure of a parallel choke assembly and the opening extent of choke valves and developed a model to characterize the pressure regime of the manifold assembly. A comparison of pressure characteristic curves shows that a parallel choke manifold assembly has obvious advantages over the conventional serial type including high linearity of pressure-regulating characteristics curves, the elimination of the overshoot interval, wider effective regulating interval and the higher system security. Laboratory hydraulic experiments have validated the capability of a back pressure control model for the parallel choke assembly to accurately control pressure. This study is of great theoretical and practical significance to further improve the performance of chokes used in managed pressure well drilling.
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