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Integrated wellhead device for oil and gas well emergency rescue

A technology for emergency rescue and wellhead devices, which is applied in wellbore/well components, drilling equipment, drilling pipes, etc., can solve problems such as complicated installation procedures, and achieve the effects of strong interchangeability, strong bearing capacity, and strong pressure bearing capacity

Pending Publication Date: 2019-03-01
CHINA NAT PETROLEUM CORP CHUANQING DRILLING ENG CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the installation procedure of the current emergency wellhead device is complicated, and personnel must work in close quarters many times. Therefore, an integrated wellhead device for emergency rescue has been developed to realize unmanned wellhead operations, and only one operation step can complete the wellhead Operation

Method used

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  • Integrated wellhead device for oil and gas well emergency rescue

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Embodiment Construction

[0017] Referring to the accompanying drawings, as the best implementation mode of the present invention, it discloses an integrated wellhead device for emergency rescue of oil and gas wells, which mainly includes casing sealing device 1, casing clamping device 2 and flow guiding device 3. The diversion device 3 is a diversion cover in the shape of a small upper part and a larger trumpet in the lower part. The upper part of the diversion cover with a smaller inner diameter communicates with the casing clamping device 2, and the casing clamping device 2 is a clamping device. The upper part of the casing clamping device 2 is connected with the casing sealing device 1 . The casing sealing device 1 includes a limiting mechanism and a sealing block 5, the limiting mechanism is a step 4 blocking the casing, and the sealing block 5 is arranged in the casing sealing device 1 and is used to contact the casing .

[0018] In the safe area, the diversion device 3, the casing clamping devi...

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Abstract

The invention discloses an integrated wellhead device for oil and gas well emergency rescue. The integrated wellhead device mainly comprises a casing sealing device, a casing clamping device and a flow guiding device, the flow guiding device is a trumpet-shaped flow guiding cover with the small upper part and the large lower part, the upper partwith the smaller inner diameter of the flow guiding cover communicates with the casing clamping device, the casing clamping device is a slip, and the upper part of the casing clamping device is connected with the casing sealing device. According to theintegrated wellhead device for oil and gas well emergency rescue, the number of operation times of personnel going to a wellhead during a wellhead resetting operation link is decreased, intrinsic security is realized, wellhead resetting is changed from 'an eight-step method' to 'a one-step method', and the emergency disposal efficiency offirecatching caused by out-of-control blowout of an oil andgas wellis improved.

Description

technical field [0001] The invention relates to an integrated wellhead device for emergency rescue of oil and gas wells. It is suitable for a new wellhead device installed when the oil and gas well blowout is out of control or caught on fire, and the wellhead device is completely damaged and only bare casing remains. function under pressure. Background technique [0002] After the blowout is out of control and ignited, especially in the "three high" oil and gas wells, the blowout is out of control, the heat radiation of the wellhead is particularly strong, the ambient temperature is above 800 ℃, the noise generated by the air jet is also above 200dB, and the toxic and harmful gases are not completely burned. Accumulated near the wellhead At the same time, the ground near the wellhead vibrates continuously like an earthquake, which is also a great psychological challenge to the rescuers. Therefore, the wellhead operation is the most dangerous and the most harmful operation li...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B33/03E21B19/10
CPCE21B19/10E21B33/03
Inventor 刘正连罗园刘贵义卿玉刘俊男胡旭光王留洋叶霁霏赖向东李玉飞
Owner CHINA NAT PETROLEUM CORP CHUANQING DRILLING ENG CO LTD
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