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1. 发明申请

WO2005093209A1 METHOD OF INJECTING LIFT GAS INTO A PRODUCTION TUBING OF AN OIL WELL AND GAS LIFT FLOW CONTROL DEVICE FOR USE IN THE METHOD 审中-公开
标题翻译：将气体注入生产管道中的方法和方法中使用的气体和气体流动控制装置
公开(公告)号：WO2005093209A1
公开(公告)日：2005-10-06
申请号：PCT/EP2005/051298
申请日：2005-03-21
申请人： SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V. , SHELL CANADA LIMITED , GALLOWAY II, Arthur William , HALL, James William , JOHNSON, Joseph Larry , NETTLESHIP, Gary
发明人： GALLOWAY II, Arthur William , HALL, James William , JOHNSON, Joseph Larry , NETTLESHIP, Gary
IPC分类号： E21B43/12
CPC分类号： E21B43/123
摘要： A method is disclosed for injecting lift gas or other fluid into a production conduit of an oil well via one or more wear resistant downhole gas lift flow control devices which each comprise: a tubular valve housing (1) comprising a flow passage (2) having an upstream end (9) which is connected to a lift gas supply conduit and a downstream end (10) which is connected to the interior of the production conduit; a flapper type valve body (3) which is pivotally connected to the valve housing (1) and is arranged in the flow passage (2) such that if the valve body is pivoted in the open position the valve body is oriented substantially parallel to the flow passage and that if the valve body is pivoted in the closed position the valve body is oriented substantially perpendicular to the flow passage and is pressed against a ring shaped valve seat (4), thereby blocking passage of lift gas through the flow passage(2); a valve protection sleeve (5) which is slidably arranged in the flow passage (2) between a first position (shown in Fig.2) wherein the sleeve (5) extends through the ring-shaped valve seat, whilst the valve body (3) is pivoted in the open position thereof, thereby protecting the valve body and seat against wear by the flux of lift gas or other fluid and a second position (shown in Fig. 1) wherein the sleeve (5) extends through the section of the flow passage (2) upstream of the valve seat (4), whilst the valve body (3) is pivoted in the closed position thereof; and a flow restrictor (8) forming part of the valve protection sleeve (5), which is dimensioned such that the flux of lift gas flowing through the flow restrictor (8) creates a pressure difference which induces the sleeve (5) to move towards the first position.
摘要翻译：公开了一种用于通过一个或多个耐磨井下气举流量控制装置将提升气体或其它流体注入到油井的生产管道中的方法，每个包括：管状阀壳体（1），其包括流动通道（2）连接到提升气体供应管道的上游端（9）和连接到生产管道内部的下游端（10）; 一个可旋转地连接到阀壳体（1）并且设置在流动通道（2）中的挡板式阀体（3），使得如果阀体在打开位置枢转，则阀体基本平行于并且如果阀体在关闭位置枢转，则阀体基本上垂直于流动通道定向并且被压靠在环形阀座（4）上，从而阻止提升气体通过流动通道（2））; 阀套（5），其可滑动地布置在流动通道（2）中的第一位置（图2所示）之间，其中套筒（5）延伸穿过环形阀座，同时阀体（3 ）在其打开位置枢转，由此保护阀体和座椅免受提升气体或其它流体的通量的磨损和第二位置（图1所示），其中套筒（5）延伸穿过流动通道（2）在阀座（4）的上游，而阀体（3）在关闭位置枢转; 以及形成阀保护套（5）的一部分的限流器（8），其尺寸使得流过限流器（8）的提升气体的通量产生压力差，其导致套筒（5）朝向第一名。

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