Pressure-transmitting supporting automatic grouting valve float valve

An automatic grouting and top-supporting technology, which is applied to wellbore/well valve devices, wellbore/well parts, earthwork drilling and production, etc., can solve problems such as automatic grouting, avoid blowout in pipes, and avoid stuck pipe accidents , Reasonable and compact structure

Inactive Publication Date: 2013-09-18
慕武
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Avoid the disadvantages of the current valve type float valve that cannot be automatically grouted

Method used

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  • Pressure-transmitting supporting automatic grouting valve float valve
  • Pressure-transmitting supporting automatic grouting valve float valve

Examples

Experimental program
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Effect test

Embodiment Construction

[0014] Such as figure 1 As shown, an automatic grouting valve float valve that can be supported by pressure transmission is composed of a float valve joint 1, a float valve and a valve support device. Float valve is made of upper valve body 2, upper sealing ring 3, gasket ring 4, middle sealing ring 5, valve body seat 6, valve 7, torsion spring 8, lower sealing ring 9, pressure transmission aperture 16. The upper valve body 2 is connected with the valve body seat 6 with threads, the upper sealing ring 3, the gasket ring 4 and the middle sealing ring 5 are set on the upper valve body 2, and the inner diameter of the float valve is basically the same as that of the float valve joint 1 There is an inner convex shoulder surface on the inner wall of the float valve joint 1, the float valve is placed in the float valve joint 1, and the lower end of the lower sealing ring 9 sleeved on the lower end of the valve body seat 6 pushes against the inner convex shoulder surface to form a se...

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PUM

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Abstract

The invention discloses a pressure-transmitting supporting automatic grouting valve float valve. The automatic grouting valve float valve is characterized in that a float valve is mounted in a float valve joint, a valve supporting device is welded in the float valve, a valve body seat of the float valve is hinged to a valve, the elasticity of a torsion spring on both the valve and the valve body seat enables the valve to close the valve body seat when the valve is in the free state, the supporting device balances the spring force for automatically closing the valve-type float valve according to the principle that a supporting spring has a certain supporting force (the spring force can be adjusted through changing the size of the spring) and the in-pipe flowing force generated by pressure difference inside and outside fluid in a well, and a supporting bar enables the valve to be always in the tightly open state to form a channel so as to achieve the purpose of automatic grouting. When well kick or blowout occurs in the pipe, the valve enables the supporting bar to compress the supporting spring under the action of fluid flowing into the pipe, the supporting bar retracts into a supporting box, and the valve is closed to achieve the purpose of a check valve. As pressure-transmitting small holes are obliquely formed in the valve, the pressure of liquid inside and outside the valve after the valve is closed is transmitted.

Description

technical field [0001] The invention relates to the method of manual grouting without stopping the drilling (oil pipe running) operation in the oil drilling process, which can be automatically grouted. When the flow rate of the fluid in the pipe such as well kick and blowout reaches a certain value, it will play the role of a check valve, which can prevent the occurrence of blowout accidents in the pipe when the drill is pulled out, and can accurately measure the standpipe after controlling the well kick and blowout. Pressure calculation to calculate the accurate formation pressure. Background technique [0002] In the process of drilling (tubing) in oil drilling, because the valve type float valve commonly used in the field only plays the role of a check valve, and because of the limitation of the pressure bearing capacity and the compression strength of the drill pipe (tubing), the running (running) When the oil pipe) reaches a certain well depth, in order to prevent the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B34/08
Inventor 慕武许震杨书逸高超李纲王伟窦红梅彭晓刚李森张甫
Owner 慕武
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