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CN104500005A 气体注入控制装置及其操作方法 无效 - 撤回

气体注入控制装置及其操作方法
摘要：
在此提供了特别是用于在井孔中控制将气体注入管或管道中以便将液体(例如像原油)沿该管向上提升的部署的气体注入控制装置。在此描述了一种气体控制装置(50，200)，该装置包括一个壳体(49，206)、以及在该壳体内的至少两个控制阀安排。每个安排具有：用于接收来自一个加压供应的气体的一个入口(76)、用于供应加压的气体以便注入该管中的一个出口(80)、在该入口与出口之间的一个流体路径中的一个输入阀(62)、以及与该输入阀相关联的一个致动器(72)。每个致动器是独立可控制的以便将对应的输入阀在其开放与关闭构形之间进行切换。这允许将气体注入切换为开启和关闭、并且协助控制注入气体的流速。
摘要（英）：

Gas injection control devices are provided, particularly for deployment in a well-bore to control injection of a gas into a tube or pipe to lift a liquid up the tube, such as crude oil for example. A gas control device (50, 200) is described which comprises a housing (49, 206), and at least two control valve arrangements within the housing. Each arrangement has an inlet (76) for receiving gas from a pressurized supply, an outlet (80) for supplying pressurized gas for injection into the tube, an inlet valve (62) in a fluid path between the inlet and outlet, and an actuator (72) associated with the inlet valve. Each actuator is independently controllable to switch the respective inlet valve between its open and closed configurations. This allows the gas injection to be switched on and off, and facilitates control of the injection gas flow rate.

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