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US08191627B2 Tubular embedded nozzle assembly for controlling the flow rate of fluids downhole 有权
用于控制井下流体流量的管状嵌入式喷嘴组件

Tubular embedded nozzle assembly for controlling the flow rate of fluids downhole
Abstract:
An apparatus (100) for controlling the flow rate of a fluid during downhole operations. The apparatus (100) includes a tubular member (134) having a flow path (136) between inner and outer portions of the tubular member (134). The flow path (136) includes an inlet (138) in an inner sidewall (140) and an outlet (142) in an outer sidewall (144) of the tubular member (134). The inlet (138) and the outlet (142) are laterally offset from each other. A fluidic device (146) is positioned in the flow path (136) between the inlet (138) and the outlet (142). The fluidic device (146) is embedded within the tubular member (134) between the inner sidewall (140) and the outer sidewall (144). The fluidic device (146) includes a nozzle (154) having a throat portion (156) and a diffuser portion (158) such that fluid will flow through the nozzle (154) at a critical flow rate.
Abstract(Chinese):

一种用于在井下操作期间控制流体的流量的装置（100）。 设备（100）包括管状构件（134），其在管状构件（134）的内部和外部之间具有流动路径（136）。 流动路径（136）包括内侧壁（140）中的入口（138）和管状构件（134）的外侧壁（144）中的出口（142）。 入口（138）和出口（142）彼此横向偏移。 流体装置（146）位于入口（138）和出口（142）之间的流动路径（136）中。 流体装置（146）嵌入在内侧壁（140）和外侧壁（144）之间的管状构件（134）内。 流体装置（146）包括具有喉部（156）和扩散器部分（158）的喷嘴（154），使得流体将以临界流速流过喷嘴（154）。

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