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New Kelly Plug Valve with Stable Sealing Capability

A kelly cock valve and capacity technology, applied in the field of drilling cock valves, can solve problems such as difficulty in opening, jamming, and easy damage in the closed state, and achieve the effects of easy assembly, stable and reliable operation, and simple structure

Active Publication Date: 2017-06-16
四川保瑞特钻头有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are many problems with the plug valves currently used in drilling sites, for example, they may be stuck during use, the closed state is easily damaged, and it is difficult to open under pressure.

Method used

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  • New Kelly Plug Valve with Stable Sealing Capability
  • New Kelly Plug Valve with Stable Sealing Capability
  • New Kelly Plug Valve with Stable Sealing Capability

Examples

Experimental program
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Effect test

Embodiment Construction

[0022] The present invention will be further described below in conjunction with accompanying drawing, protection scope of the present invention is not limited to the following:

[0023] Such as figure 1 As shown, the new kelly plug valve with stable sealing ability includes upper valve seat assembly, lower valve seat assembly, switch shaft assembly, valve core assembly and valve body 1, upper valve seat assembly, lower valve seat assembly, and lower valve seat assembly. Both the valve seat assembly and the valve core assembly are located in the inner cavity of the valve body 1, and the upper valve seat assembly is located above the valve core assembly, and the lower valve core assembly is located below the valve core assembly;

[0024] In this example, if Figure 1~Figure 5 As shown, the valve core assembly includes a valve core 2, a left bracket 3, a right bracket 4 and a pin shaft 5. The left bracket 3 and the right bracket 4 are closed into a cavity, and the valve core 2 ...

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PUM

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Abstract

The invention discloses a novel kelly bar plug valve having stable sealing performance. The plug valve comprises an upper valve seat assembly, a lower valve seat assembly, a switch shaft assembly, a valve core assembly and a valve body (1), wherein the upper valve seat assembly, the lower valve seat assembly and the valve core assembly are located in an inner cavity of the valve body (1), the upper valve seat assembly is located above the valve core assembly, the lower valve seat assembly is located below the valve core assembly, the valve core assembly comprises a valve core (2), a left support (3), a right support (4) and a hinge pin (5), and the switch shaft assembly comprises a switch shaft (6) and a plane needle bearing (7). The plug valve has the benefits as follows: through clearance design, the valve core is in a floating state during working of the plug valve, relative positions of the valve core and valve seats can be automatically adjusted, the valve body is long in service life, and a whole plug valve tool is reliable and simple to assemble.

Description

technical field [0001] The invention relates to a drilling cock, especially a novel kelly cock with stable sealing ability. Background technique [0002] The kelly plug valve is a blowout prevention tool inside the drill tool that protects the drill string system in a safe state under high formation pressure by manually controlling the rotation of the valve core to make it in the open or closed state. However, there are many problems in the plug valves currently used in drilling sites, such as possible jamming during use, easy damage to the closed state, and difficulty in opening under pressure. The kelly cock valve plays an important role in ensuring the safety of well control and avoiding well control accidents. At the same time, after the kelly cock valve is installed, it can control the flow of drilling fluid, achieve the beneficial effects of saving drilling fluid and reducing environmental pollution. Therefore, it is of great practical significance to study a new type...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B34/16
CPCF16K5/0663F16K5/08
Inventor 贺阳葛惠祥
Owner 四川保瑞特钻头有限公司
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