Novel fusible plug and application method thereof

A fusible plug, a new type of technology, is applied in earthwork drilling, fire prevention equipment, boreholes/well components, etc. It can solve the problems of insufficient safety valve shut-off, large volume of fusible alloy, and potential safety hazards, etc., and achieve structural Simple, low cost, and the effect of increasing the safety factor of oil well operations

Inactive Publication Date: 2019-01-18
MEIZUAN SHENHAI ENERGY TECH RES & DEV SHANGHAI CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, under normal circumstances, due to the large volume of the fusible alloy in the fusible plug, it takes a certain amount of time to completely melt, so that the safety valv

Method used

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  • Novel fusible plug and application method thereof
  • Novel fusible plug and application method thereof

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Embodiment Construction

[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0017] In order to achieve the above purpose, the present invention provides a new type of fusible plug, which is used to activate the hydraulic actuator 7 of the oil well safety valve. The hydraulic actuator 7 is a part of the oil well safety system, which can quickly shut off the oil well safety valve in case of sudden fire, so as to ensure the safety of the oil well operation. When the hydraulic actuator 7 push rod 5 rises, the oil well safety valve is clos...

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Abstract

The invention provides a novel fusible plug. The novel fusible plug is used for stimulating a hydraulic touching device of an oil well safety valve, and comprises a fusible plug body and fusible alloy, wherein an external thread is formed in the outer wall of the fusible plug body, a fusion channel is formed in the internal axial direction, and penetrates through the fusible plug body, and a stepis arranged at the first end of the fusible plug body; the fusible alloy is poured into the fusion channel and used for completely sealing the fusion channel. The invention also discloses an application method for the fusible plug. According to the novel fusible plug, the cost of the fusible plug is low, installing is convenient, the structure is simple, the hydraulic touching device can be effectively stimulated to turn off the oil well safety valve, the turn-off speed is greatly increased, the disposition speed of a dangerous omen is further increased effectively, security coefficients of oil-well operation are increased, and the novel fusible plug has the good popularization value and practical value.

Description

technical field [0001] The invention relates to the technical field of oil exploitation safety equipment, in particular to a fusible plug used for a hydraulic actuator to shut off an oil well safety valve in an emergency. Background technique [0002] The hydraulic actuator is a part of the oil well safety system, which can quickly shut off the oil well safety valve in the event of a fire to ensure the safety of oil well operations. At present, fusible plugs are usually used to activate hydraulic actuators to switch oil well safety valves. The fusible plug is usually composed of a fusible plug body and a fusible alloy, which are fixed together by mosaic. The usual way to install the fusible plug is to install the fusible plug on the upper end of the actuator when the safety valve is in the fully open position, and the fusible alloy at the bottom of the fusible plug is against the top of the hydraulic actuator plunger. The upward movement of the push rod of the hydraulic ac...

Claims

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Application Information

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IPC IPC(8): E21B34/00E21B35/00
CPCE21B34/00E21B35/00
Inventor 任国庆李军王仕梁
Owner MEIZUAN SHENHAI ENERGY TECH RES & DEV SHANGHAI CO LTD
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