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Integral valve element type cock valve for petroleum drilling

A technology of oil drilling and integral valve, which is applied in the direction of wellbore/well valve device, earthwork drilling and production, wellbore/well parts, etc. It can solve the need for special tools and pressure testing equipment for maintenance, increase the cost of round-trip transportation, and lose Function and other issues, to achieve the effect of saving stocking and transportation costs, low cost of use, and convenient operation and use

Active Publication Date: 2016-10-12
东营市创元石油机械制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The plug valve is a necessary internal blowout prevention tool for oil drilling. It is used in a very large amount and belongs to the consumable drilling tool. The plug valve currently used is a split structure, that is, the upper valve seat, the ball, the lower valve seat, and the spring are all in one piece. For individual parts, special tools and pressure testing equipment are required for maintenance. After a fault occurs, for safety reasons, it is impossible to complete the maintenance work on site. It can only be transported b

Method used

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  • Integral valve element type cock valve for petroleum drilling
  • Integral valve element type cock valve for petroleum drilling
  • Integral valve element type cock valve for petroleum drilling

Examples

Experimental program
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Effect test

Embodiment 1

[0020] Integral spool plug valve for oil drilling, which includes retaining ring 1, retaining ring 2, snap ring 3, upper valve seat 4, ball 6, knob 8, bearing 9, lower valve seat 11, spring 12, valve body 13, Retaining ring 5, transmission block 7, valve sleeve 10, positioning surface 14, support rib 15, wherein the valve body 13 is a round tube, both ends are processed with threads, and the inner hole is processed from top to bottom with an annular groove and two Steps, a snap ring 3 is installed in the annular groove, and the valve sleeve 10 is supported on the first step. There is a radial step hole downwards in the annular groove, and a knob 8 and a bearing 9 are installed in the hole, and the bearing 9 is supported on the step and set in the On the knob 8, the steps of the knob 8 are supported on the bearing 9, the upper valve seat 4 and the valve sleeve 10 are connected as a whole through the snap ring 5, the left part of the transmission block 7 is inserted into the long...

Embodiment 2

[0026] The difference from Embodiment 1 is that the integral spool plug valve for oil drilling also includes a limiting platform 16. There is no hole on the lower end surface of the lower valve seat 11, and there is a concave platform on the outer circle of the lower part. Below the concave platform is called a limiting platform 16. , The spring 12 is set on the limit platform 16, and the upper end surface supports the concave platform.

[0027] Connect the integral spool type plug valve for oil drilling to the drill string, connect the mud channel, turn the knob 8 counterclockwise with a special wrench, the knob 8 drives the ball 6 to rotate counterclockwise through the transmission block 7, when the two sides of the transmission block 7 and When the open positioning surface of the positioning surface 14 is in contact, the plug valve is fully opened. At this time, the stop ring 2, the snap ring 3, the upper valve seat 4, the through hole of the ball 6, the lower valve seat 11,...

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PUM

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Abstract

The invention relates to an integral valve element type cock valve for petroleum drilling. The integral valve element type cock valve comprises an upper valve seat, a sphere, a rotary knob, a bearing, a lower valve seat, a valve body, an elastic baffle ring, a transmission block, a valve sleeve and a locating surface, wherein the valve sleeve is a circular tube, a square groove is formed downward along the axial direction on the upper end face, a radial hole is formed in one surface of the square groove, the radial hole is a round hole inclined for 45 degrees and with two right angles projecting inward; an integral valve element composed of the upper valve seat, the sphere, the lower valve seat, the spring, the elastic baffle ring, the transmission block, the valve sleeve, the locating surface, a supporting rib and a spacing table can be replaced on site, thereby being convenient and quick; and only a certain number of integral valve elements are required to be prepared on site, and the integral valve element which is replaced is sent back to be repaired, so that stocking and transportation costs are greatly saved. The valve provided by the invention is of an integral structure, high in strength, good in reliability, convenient to operate and use, low in usage cost and long in life and can be operated and used under pressure.

Description

technical field [0001] The invention relates to the technical field of drilling in the petroleum industry, in particular to an integral spool type plug valve for petroleum drilling. Background technique [0002] The plug valve is a manual control valve in the drill string circulation system and an important internal blowout prevention tool. The plug valve has an upper plug valve and a lower plug valve. The upper cock valve is connected between the lower end of the faucet and the upper end of the kelly, the upper part is connected with an internal thread, and the lower part is connected with an external thread, which is connected with a left-handed thread. The lower plug valve is connected between the lower end of the kelly or the kelly protection joint and the upper end of the drill pipe. The upper part is connected with an internal thread, and the lower part is connected with an external thread, which is connected with a right-handed thread. [0003] The plug valve is eas...

Claims

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Application Information

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IPC IPC(8): E21B34/06
CPCE21B34/06
Inventor 朱怀军吴冬凤刘超田相录王笑笑
Owner 东营市创元石油机械制造有限公司