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Gas overflow detection device and paraffin scarping equipment

The technology of a detection device and a gas detector, which is applied in the field of petroleum wax scraping, can solve the problems of difficult hydrogen sulfide, alarm and the like

Pending Publication Date: 2019-11-12
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in actual work, due to the influence of wind direction changes, the hydrogen sulfide detector is fixed at a certain position, and it is not easy to report the hydrogen sulfide overflow at the nozzle in time.

Method used

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  • Gas overflow detection device and paraffin scarping equipment
  • Gas overflow detection device and paraffin scarping equipment
  • Gas overflow detection device and paraffin scarping equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] figure 1 It is a schematic structural diagram of the gas overflow detection device provided in Embodiment 1 of the present invention, figure 2 It is a schematic diagram of the diversion principle of the gas overflow detection device provided in Embodiment 1 of the present invention, image 3 It is a schematic diagram of the gas flow of the gas overflow detection device provided in Embodiment 1 of the present invention when there is no wind or weak wind, Figure 4 It is a schematic diagram of the gas flow of the gas overflow detection device provided by Embodiment 1 of the present invention when the wind is strong. Such as Figure 1-4 As shown, the gas overflow detection device provided in this embodiment is applied to the blowout preventer 1 of the wax scraping equipment, specifically, as figure 1 As shown, it includes a shroud 2 and a gas detector 3, wherein,

[0033] The gas detector 3 is located outside the nozzle 2, and the nozzle 2 is set on the nozzle 1, and ...

Embodiment 2

[0068] Figure 5 It is a schematic structural diagram of the gas overflow detection device provided by Embodiment 2 of the present invention. The gas overflow detection device provided in this embodiment is applied to the blowout preventer 1 of wax scraping equipment, specifically, as Figure 5 As shown, it includes a shroud 2 and a gas detector 3, wherein,

[0069] The gas detector 3 is located outside the nozzle 2, and the nozzle 2 is set on the nozzle 1, and the top area of ​​the nozzle 1 is covered. Generally, in the process of mechanical wax removal, the wax scraping equipment relies on the nozzle 1 to enter Inside the oil well, the top of the blowout preventer 1 relies on rubber to wrap the steel wire into it for sealing. In order to detect whether the sealing effect is good or not, and to prevent the overflow of toxic gas hydrogen sulfide caused by poor sealing effect, in this embodiment, the nozzle cover 2 The cover is arranged at the sealing port of the top area of ...

Embodiment 3

[0095] This embodiment provides a kind of wax scraping equipment, wherein, the wax scraping equipment at least includes a blowout preventer 1 and any gas overflow detection device in the above-mentioned embodiments, and the gas overflow detection device is arranged on the top of the blowout preventer 1 to ensure the prevention of blowout. All the gas overflowing from the sealing port of the nozzle 1 flows to the hydrogen sulfide detector through the shroud 2 of the gas overflow detection device. Wherein, other components of the wax scraping equipment can refer to the existing wax scraping structure, which will not be described in detail in this embodiment, and the specific structure and working principle of the gas overflow detection device have been described in detail in the first embodiment above. I won't repeat them here.

[0096] In this embodiment, the gas overflow detection device provided for detecting the overflow of hydrogen sulfide gas at the blowout preventer in th...

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Abstract

The invention provide a gas overflow detection device. The device includes a flow guide cover and a gas detector. The gas detector is located at the outer side of the flow guide cover. The flow guidecover is arranged on a lubricator, and covers the top end area of the lubricator to accommodate gas overflowing from the top end of the lubricator. The top end of the flow guide cover is open to expose the top end of the lubricator. The lower surface of the outer wall of the flow guide cover protrudes downward to form a pressure difference between a gas flow above the top end of the flow guide cover and a gas flow below the lower surface of the outer wall of the flow guide cover. The flow guide cover is provided with a through hole communicating the inner side and the outer side of the flow guide cover. The through hole is opposite to the gas detector and is used for guiding gas in the flow guide cover to the gas detector under the action of the pressure difference. The gas overflow detection device realizes the functions of flow guiding detection of hydrogen sulfide gas overflowing from a sealing part of the lubricator during an oil well paraffin scarping process and timely alarming,thereby ensuring that the hydrogen sulfide detector can still alarm the hydrogen sulfide overflow at the lubricator even if the device is affected by wind direction changes.

Description

technical field [0001] The invention relates to the technical field of petroleum wax scraping, in particular to a gas overflow detection device and wax scraping equipment. Background technique [0002] For crude oil with a certain amount of paraffin dissolved in it, during the exploitation process, with the decrease of temperature and pressure and the precipitation of gas, the so-called waxing phenomenon occurs. Wax deposition will block the oil-producing layer, reduce the production of the oil well, and also increase the load of the oil well, causing production accidents. The existing wax removal methods mainly adopt mechanical wax removal, thermal wax removal and chemical wax removal, among which mechanical wax removal refers to scraping off the wax on the oil pipe wall with special tools, and bringing the wax to the oil pipe wall by liquid flow. Wax removal method on the ground. The wax removal tools used in blowout wells mainly include wax scrapers. The wax scraper equ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/00E21B37/02G08B21/14
CPCG01N33/0044E21B37/02G08B21/14
Inventor 金子涵胡阳阳曹鹏王宏袁梓钧杜洋南雨岑冯伟袁欢晏楠李凯岳清政刘毅石冯京涛陈玉梅王久涛陈波史贺东张新海李子文李冠军
Owner PETROCHINA CO LTD
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