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A new double-valve continuous circulation valve with its own clamping device

A technology of clamping device and circulation valve, which is applied in wellbore/well components, earthwork drilling, wellbore flushing, etc., can solve problems such as dangerous accidents, and achieve the effect of improving work efficiency and safety

Active Publication Date: 2021-12-14
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solved the technical problems of various dangerous accidents caused by the stoppage of drilling circulation medium

Method used

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  • A new double-valve continuous circulation valve with its own clamping device
  • A new double-valve continuous circulation valve with its own clamping device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Such as Figure 1-Figure 2 Shown:

[0044] This embodiment provides a new double-valve type continuous circulation valve with its own clamping device, including a main through valve 5, a shorting body 8, an intermediate joint 11 and a bypass valve 12, wherein:

[0045] The short-connecting main body 8 is a hollow short shaft structure, and both ends of the short-connecting main body 8 are provided with threaded sections;

[0046] The main valve 5 and the main valve spring 6 are arranged in the short-circuit main body 8;

[0047] The lower end of the main valve 5 is provided with a main valve spring 6, and the upper end is provided with a main valve seat 4;

[0048] The main through valve seat 4, main through valve 5 and main through valve spring 6 are press-fitted inside the shorting main body 8 through the main through valve limiting device 1;

[0049] The lower side of the shorting body 8 is provided with a step hole, the step hole is located below the main valve s...

Embodiment 2

[0062] This embodiment provides a new double-valve type continuous circulation valve with its own clamping device, including a main through valve 5, a shorting body 8, an intermediate joint 11 and a bypass valve 12, wherein:

[0063] The short-connecting main body 8 is a hollow short shaft structure, and both ends of the short-connecting main body 8 are provided with threaded sections;

[0064] The main valve 5 and the main valve spring 6 are arranged in the short-circuit main body 8;

[0065] The lower end of the main valve 5 is provided with a main valve spring 6, and the upper end is provided with a main valve seat 4;

[0066] The main through valve seat 4, main through valve 5 and main through valve spring 6 are press-fitted inside the shorting main body 8 through the main through valve limiting device 1;

[0067] The lower side of the shorting body 8 is provided with a step hole, the step hole is located below the main valve spring 6, and a bypass valve seat 10 is arrang...

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Abstract

The invention provides a novel dual-valve type continuous circulation valve with its own clamping device, comprising a main valve (5), a shorting main body (8), an intermediate joint (11) and a bypass valve (12), and the shorting main body (12). (8) There is a main valve (5) and a main valve spring (6) inside, the main valve spring (6) is arranged at the lower end of the main valve (5), and the main valve seat (4) is arranged at the upper end. The through valve seat (4), the main through valve (5) and the main through valve spring (6) are press-fitted inside the shorting main body (8) through the main through valve limiting device (1), and the lower side of the shorting main body (8) is press-fitted. A bypass valve seat (10) is provided, the bypass valve (12) is fixed on the bypass valve seat (10) through the bypass valve limiting device (9), and the outside of the bypass valve limiting device (9) is provided with The intermediate joint (11) is press-fitted on the shorting main body (8) through the clamping device, which solves the technical problem of various dangerous accidents caused by the stopping of circulation of the drilling circulating medium.

Description

technical field [0001] The invention relates to the technical field of petroleum drilling, in particular to a novel double-valve continuous circulation valve with a clamping device. Background technique [0002] During the drilling process, when connecting and unloading a single drill pipe or column, the circulation of the drilling circulating medium will be stopped, which will cause bottomhole pressure fluctuations, resulting in well kick, pipe sticking, wellbore instability, overflow, cuttings The occurrence of dangerous accidents such as subsidence. In order to avoid this situation, the continuous circulation valve is mainly used at present to ensure that the drilling circulation medium can circulate smoothly during the replacement of the vertical root and the drill string, so as to effectively overcome the downhole pressure fluctuation caused by the start / stop of the pump, which is very good. Reduce the cost of drilling work, reduce the probability of danger in drilling...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B21/10
CPCE21B21/10E21B21/103F16K11/105E21B21/106Y10T137/7856E21B34/00
Inventor 杨火海谢秉宏杨杰刘付喜岳杰阮景鑫刘兴
Owner SOUTHWEST PETROLEUM UNIV