公开(公告)号：US09546541B2

公开(公告)日：2017-01-17

申请号：US14017712

申请日：2013-09-04

Applicant: Schlumberger Technology Corporation

Inventor： Chao Wang ,  Weng Keong Tiong ,  Yushan Li ,  Ganesh Balasubramanian

IPC: E21B43/12

CPC classification number: E21B43/123

Abstract: A method can include selecting a ratio of a first effective cross-sectional area of a first component of a gas lift valve to a second effective cross-sectional area of a second component of the gas lift valve; charging a chamber of the gas lift valve; and positioning the gas lift valve in a pocket to expose the gas lift valve to a tubing pressure and a casing pressure, where transitioning of the gas lift valve from a closed state to an open state depends at least in part on the selected ratio. Various other apparatuses, systems, methods, etc., are also disclosed.

Abstract translation: 一种方法可以包括选择气提阀的第一部件的第一有效截面面积与气举阀第二部件的第二有效横截面积的比值; 对气举阀门进行充气; 以及将所述气举阀定位在口袋中以将所述气举阀暴露于管道压力和套管压力，其中所述气举阀从关闭状态转换到打开状态至少部分地取决于所选择的比率。 还公开了各种其它装置，系统，方法等。

公开(公告)号：US20150233220A1

公开(公告)日：2015-08-20

申请号：US14426637

申请日：2013-09-06

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Weng Keong Tiong ,  Chao Wang ,  Yushan Li

IPC: E21B43/12 ,  E21B34/10 ,  B21K1/20

CPC classification number: E21B43/123 ,  B21K1/20 ,  E21B34/10 ,  Y10T29/49405

Abstract: A gas lift valve is provided with increased longevity and reliability for preventing backflow. A wide cylindrical sliding member stabilizes axial movement of a valve element in the gas lift valve. A wide spring around the sliding member biases the valve element toward closure during back flow. The spring is physically supported and guided by the sliding member and protected from gas flow injection by the same sliding member. A one-piece poppet version of the valve element provides a consistent closing seal, and the sliding member protects the valve seat and poppet from full force of an injected gas. A dart version of the valve element includes a hexagonal race for movement of the sliding member, which prevents rotational wear of components and provides a straight flow path for the injection gas with no sharp transitions to wear and no sharp angles to erode.

Abstract translation: 提供了一种提升阀，提高了寿命和可靠性，防止回流。 宽的圆柱形滑动构件稳定了气体提升阀中的阀元件的轴向运动。 滑动构件周围的宽弹簧在回流期间将阀元件朝向闭合偏压。 弹簧由滑动构件物理地支撑和引导，并且防止由同一滑动构件的气流注入。 阀元件的一体式提升阀提供一致的关闭密封，并且滑动构件保护阀座和提升阀免受注入气体的全部力的影响。 阀元件的镖型包括用于滑动构件的运动的六角形座圈，其防止部件的旋转磨损，并且为喷射气体提供没有尖锐过渡以磨损的直流流动路径，并且没有锐角消失。