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Slurry splash-proof valve for oil field drilling

An oil field drilling and mud technology, which is applied in the field of oilfield mining auxiliary equipment, can solve the problems of large damage to valve core components, insensitive control, and poor induction of low pressure by the sealing method, and achieves the effect of reducing the position of the limit piston.

Active Publication Date: 2022-04-22
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

[0005] In order to overcome the disadvantages of large damage to valve core parts caused by mud erosion, poor sealing method for low pressure induction and insensitive control, the invention provides a mud splash prevention valve for oilfield drilling controlled by hydraulic induction

Method used

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  • Slurry splash-proof valve for oil field drilling
  • Slurry splash-proof valve for oil field drilling
  • Slurry splash-proof valve for oil field drilling

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A mud splash prevention valve for oil field drilling, such as Figure 1-Figure 6 As shown, it includes a housing 1, fixing bolts 102, U-shaped sealing ring 103, a first valve body part and a second valve body part, and the first valve body part and the second valve body are installed in the housing 1 in a limited sliding manner. Parts, the first valve body part is located above the second valve body part, and the two are in close contact, the first valve body part and the second valve body part cooperate to seal the flow of mud, the shell 1 and the second valve body part A U-shaped sealing ring 103 is arranged between them, and the contact position between the housing 1 and the first valve body part is inclined inwardly from top to bottom, and a cylindrical mud passage 101 is formed between the housing 1 and the first valve body part , the cylindrical mud channel 101 does not affect the flow state of the mud in the housing 1 and reduces the occurrence of eddy currents. ...

Embodiment 2

[0028] On the basis of Example 1, such as Figure 2-Figure 4As shown, the first valve body part includes a valve fixing block 2, an upper valve body 3, a pressure sensing transmission assembly, a limit piston 7, a first spring 8 and a choke ring 9, and the valve fixing block 2 and the housing 1 are fixed by The bolt 102 is connected in a limited position, and the middle of the valve fixing block 2 is provided with a diverter block 202. The diverter block 202 divides the vertically downward flowing mud evenly and circumferentially. 2 and the shunt block 202 is provided with a first connecting shank 201, the upper part of the shunt block 202 is set in a conical arc shape, the upper end of the first connecting shank 201 is set obliquely, and the upper end of the first connecting shank 201 is set in a triangular wedge shape, so that To reduce the erosion caused by mud scouring, and reduce the resistance of part of the mud flowing downward, the lower surface of the diverter block 2...

Embodiment 3

[0033] On the basis of Example 2, such as Figure 6 As shown, the second valve body part includes a lower valve body 10, a pressure-sensitive piston 11, a push block 12, a limit plate 13 and a second spring 14, and the lower valve body 10 is limitedly installed in the housing 1 by fixing bolts 102. , the upper part of the lower valve body 10 is inclined inwardly, so as to guide the mud flowing downward, prevent the mud from washing the lower valve body 10 and shorten its service life, and divert the mud to push the mud pressure to the choke ring 9 Centralized, the lower valve body 10 is closely attached to the outer periphery of the lower part of the choke ring 9, and the lower valve body 10 is provided with four pressure-sensing slide chambers 111 in the circumferential direction, and the middle part of the lower valve body 10 is provided with a pressure delivery chamber 112, and the lower valve body 10 The upper surface of the second connecting shank 113 on the upper surface...

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Abstract

The invention relates to the field of oilfield exploitation auxiliary equipment, in particular to a mud splash-proof valve for oilfield drilling. Comprising a shell, a first valve body part, a second valve body part and the like. A first valve body component and a second valve body component are installed in the shell in a limited sliding mode. The pressure of slurry is transmitted into the first valve body part through pressure transmission of a pressure drum membrane and a pressure elastic membrane, the influence of the slurry on the internal structure of the valve is avoided, the flow state of the slurry is accurately controlled through cooperation of a limiting piston and a flow blocking ring, and the stability of the valve is improved. The device is in an open state according to the environments with different slurry pressures, when the slurry pressure is higher, the opening between the flow blocking ring and the lower valve body is larger, the slurry flow speed is increased, the flow is increased, and the effect is opposite when the slurry pressure is lower, and the hydraulic oil pressure in the lower valve body is adjusted by sensing the external slurry pressure through the pressure sensing piston. And through cooperation of the push block and the limiting piston, accidents such as clamping of the limiting piston are reduced.

Description

technical field [0001] The invention relates to the field of auxiliary equipment for oilfield exploitation, in particular to a mud splash prevention valve for oilfield drilling. Background technique [0002] As an important non-renewable and important energy source for human beings, oil has attracted the attention of countries all over the world in terms of its exploitation and use. As the main way to obtain oil from the ground, oil drilling is often accompanied by the use of many equipment in its professional field. [0003] In the process of oil extraction, the connecting process between drill pipes is often accompanied by the spilling of internal mud, which firstly causes a waste of mining resources, and secondly, on the drilling platform, the spilled mud is harmful to the working environment and ecological environment. Small impact, most of the traditional anti-splash valves currently used have a single structure and insufficient craftsmanship. Due to the structure of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B21/10
CPCE21B21/10
Inventor 王笑笑姚进党玉峰田相录朱怀军
Owner 东营市创元石油机械制造有限公司