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1. 发明授权

US5743717A Nozzle-venturi gas lift flow control device 失效
标题翻译：喷嘴文丘里气举流量控制装置
公开(公告)号：US5743717A
公开(公告)日：1998-04-28
申请号：US917879
申请日：1997-08-27
申请人： Zelimir Schmidt
发明人： Zelimir Schmidt
IPC分类号： E21B43/12 , F04F1/18 , F04F1/20
CPC分类号： E21B43/123 , Y10T137/2934
摘要： A gas flow control device for injecting gas into a production string for recovering pressure and reducing frictional losses, so that critical flow can be reached at lower pressure drops and higher production pressure, includes a nozzle having first and second ends, and a flow path therebetween, and a Venturi having first and second ends, and a flow path therebetween. The first end of the Venturi is disposed adjacent to the second end of the nozzle. The Venturi flow path is aligned with the nozzle flow path to provide a continuous flow path through the valve.
摘要翻译：一种用于将气体注入用于回收压力并减少摩擦损失的生产线中的气体流量控制装置，使得可以在较低的压降和较高的生产压力下达到临界流量，包括具有第一和第二端的喷嘴及其间的流动路径和具有第一和第二端的文氏管以及它们之间的流路。文丘里管的第一端设置成与喷嘴的第二端相邻。文丘里流动路径与喷嘴流动路径对准，以提供穿过阀门的连续流动路径。

2. 发明授权

US5707214A Nozzle-venturi gas lift flow control device and method for improving production rate, lift efficiency, and stability of gas lift wells 失效
标题翻译：喷气文丘里气举流量控制装置及提升井升井效率及稳定性的方法
公开(公告)号：US5707214A
公开(公告)日：1998-01-13
申请号：US723169
申请日：1996-09-27
申请人： Zelimir Schmidt
发明人： Zelimir Schmidt
IPC分类号： E21B43/12 , F04F1/08 , E21B21/00
CPC分类号： E21B43/123
摘要： A gas flow control device for injecting gas into a production string for recovering pressure and reducing frictional losses, so that critical flow can be reached at lower pressure drops and higher production pressure, includes a nozzle having first and second ends, and a flow path therebetween, and a Venturi having first and second ends, and a flow path therebetween. The first end of the Venturi portion is disposed adjacent to the second end of the nozzle. The Venturi flow path coaxially aligned with the nozzle flow path to provide a continuous flow path through the valve. A method to increase the production rate, improve the lift efficiency, and eliminate or suppress instability in continuous-flow gas lift wells by use of a flow control device that has a gas flow rate performance that is independent of the tubing pressure even when the tubing pressure is as high as 80% to 93% of the casing pressure.
摘要翻译：一种用于将气体注入用于回收压力并减少摩擦损失的生产线中的气体流量控制装置，使得可以在较低的压降和较高的生产压力下达到临界流量，包括具有第一和第二端的喷嘴及其间的流动路径和具有第一和第二端的文氏管以及它们之间的流路。文丘里部分的第一端设置成与喷嘴的第二端相邻。文丘里流动路径与喷嘴流动路径同轴对准以提供通过该阀的连续流动路径。一种通过使用具有独立于管道压力的气体流速性能的流量控制装置来提高生产率，提高提升效率以及消除或抑制连续流动气举井中的不稳定性，即使当管压力高达套管压力的80％至93％。

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