Unlock instant, AI-driven research and patent intelligence for your innovation.

Equalizing flapper for high slam rate applications

一种挡板阀、元件的技术，应用在用于在密封面上卸压的装置、井眼/井的阀装置、井眼/井部件等方向，能够解决阀元件失去功能等问题，达到可靠阀配置的效果

Inactive Publication Date: 2008-02-06
BAKER HUGHES HLDG LLC
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the compensating valve is normally aligned with the lower end of the actuating sleeve, deformed metal may flow onto the compensating valve element itself, causing the valve element to lose function

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Equalizing flapper for high slam rate applications
  • Equalizing flapper for high slam rate applications
  • Equalizing flapper for high slam rate applications

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] 1 and 2 depict an exemplary compensating flapper valve assembly 10 constructed in accordance with the present invention. Valve assembly 10 is typically incorporated into the tubing string inside the wellbore, serving as a relief valve. The valve assembly 10 includes a valve housing 12 having a first axial end 14 with pin threads 16 attached to an abutment (not shown) of production tubing and with an abutment (not shown) attached to the tubing. The second axial end 18 of the box thread 20 . Valve housing 12 defines along its length an axial orifice 22 having an enlarged central portion 24 . An annular valve seat 26 is fixed inside the enlarged central portion 24 . In this case, it is desirable to block fluid flow from the second end 18 to the first end 14 . Therefore, the second end 18 is considered to be upstream of the first end 14 .

[0018] The flapper valve element 28 is hingedly secured to the valve seat 26 by a hinge pin 30 . Valve member 28 is rotatable abou...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a baffle valve assembly. The baffle valve assembly has a compensating port assembly (32) with a discharge valve element (64) movable between an open position and a closed position. The compensating port assembly features a structural support member in the form of a retainer key (80) secured to the flapper valve element both axially and radially. Additionally, a compressible spring (86) is seated between the structural support member and the valve element, which provides a biasing force on the valve element to urge the valve element toward the closed position. In addition, the flapper valve element has a pair of raised, generally flat actuator contact portions (54) on its downstream face to meet the actuation tube (34) in a mating contact configuration and to resist pressure that could cause clogging or Blockage compensates for material deformation of fluid flow ports.

Description

technical field [0001] The present invention generally relates to compensating flapper valves for use as, for example, downhole safety valves. Background technique [0002] The wellbore often includes downhole safety valves used to plug off a portion of the production tubing in an emergency. Flapper valve assemblies have long been used as safety valves. Flapper valve assemblies typically consist of a curved metal valve element shaped to seat on an annular valve seat inside a conduit orifice to block fluid flow through the orifice. A valve element is hingedly attached to the interior of the pipe, which pivots about a hinge point between an open position and a closed position. A closed flapper valve is typically opened by an axially movable actuation sleeve that contacts the downstream face of the flapper valve and urges the valve element toward the open position. However, it is difficult to open a flapper valve that is closed by a high differential pressure. It may be dif...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): E21B34/10F16K39/02
CPCE21B2034/005E21B34/101F16K15/181F16K39/024E21B2200/05F16K15/1821
Inventor R·威廉斯V·麦克维克S·斯特拉顿J·艾夫斯
Owner BAKER HUGHES HLDG LLC