CN219412535U - Sand fracturing wellhead protector - Google Patents
Sand fracturing wellhead protector Download PDFInfo
- Publication number
- CN219412535U CN219412535U CN202320884153.1U CN202320884153U CN219412535U CN 219412535 U CN219412535 U CN 219412535U CN 202320884153 U CN202320884153 U CN 202320884153U CN 219412535 U CN219412535 U CN 219412535U
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- wellhead
- fracturing
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- pipeline
- pressure
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Abstract
A sand fracturing wellhead protector relates to the technical field of fracturing equipment. The top of the old wellhead is connected with the fracturing pipeline through a flange in a sealing way, a pressure-bearing tank is welded on the outer sides of the old wellhead and the fracturing pipeline, the pressure-bearing tank is formed by welding a section of seamless steel pipe with an upper cover plate and a lower cover plate, the upper cover plate is welded with the fracturing pipeline, and the lower cover plate is welded with the pipeline at the bottom of the old wellhead. The beneficial effects of the utility model are as follows: when sand fracturing is carried out, the fracturing fluid enters the pressure-bearing tank through the balance hole, the pressure born by the inside and outside of the old wellhead is the same, when sand fracturing is carried out, the high pressure has no influence on the old wellhead, the safety coefficient is high, the original structure of the old wellhead cannot be changed, after sand fracturing is finished, the pressure-bearing tank is cut, and the original state of the fracturing pipeline can be recovered by dismantling.
Description
Technical Field
The utility model relates to the technical field of fracturing equipment, in particular to a sand fracturing wellhead protector.
Background
In the later period of oil and gas field development, some old wells and low-pressure level wells need to be subjected to sand fracturing and yield increasing operation to have economic exploitation value, but the working pressure required by the sand fracturing operation is generally higher than that of wellhead equipment, and the sand fracturing operation has great safety risks for old wellhead meeting the pressure level, especially for old wellhead with serious corrosion.
Disclosure of Invention
The utility model provides a sand fracturing wellhead protector, which aims to solve the safety problem of sand fracturing of the existing old wellhead with low pressure level.
The technical scheme provided by the utility model is as follows: the utility model provides a sand fracturing well head protector, includes old well head, and the old well head top passes through flange sealing connection fracturing pipeline, and the welding has the pressure-bearing jar in old well head and fracturing pipeline outside, and the pressure-bearing jar is formed by one section seamless steel pipe and upper and lower apron welding, and the apron welds with the fracturing pipeline above, and the pipeline welding of apron and old well head bottom below, the apron be split structure, and the welding is in the same place into whole apron after the pipeline of fracturing pipeline and old well head bottom is detained to two components of a whole that can function independently.
The outer side of the pipeline at the bottom of the old wellhead is provided with a reinforcing pipe, two ports are welded on the upper side and the lower side of the reinforcing pipe and the pipeline at the bottom of the old wellhead, the reinforcing pipe is of a split structure, the two split reinforcing pipes are buckled on the pipeline at the bottom of the old wellhead and then welded together to form an integral reinforcing pipe, and a cover plate at the lower part is welded with the reinforcing pipe.
A balance hole is formed in the pipe wall on one side of the fracturing pipeline and is communicated with the pressure-bearing tank.
The beneficial effects of the utility model are as follows: when sand fracturing is carried out, the fracturing fluid enters the pressure-bearing tank through the balance hole, the pressure born by the inside and outside of the old wellhead is the same, when sand fracturing is carried out, the high pressure has no influence on the old wellhead, the safety coefficient is high, the original structure of the old wellhead cannot be changed, after sand fracturing is finished, the pressure-bearing tank is cut, and the old wellhead of the fracturing pipeline is removed to restore the original state.
Drawings
Fig. 1 is a structural diagram of the present utility model.
In the figure: 1-old wellhead, 2-fracturing pipeline, 3-seamless steel pipe, 4-cover plate, 5-reinforcing pipe and 6-balance hole.
Detailed Description
As shown in fig. 1, a sand fracturing wellhead protector comprises an old wellhead 1, wherein the top of the old wellhead 1 is connected with a fracturing pipeline 2 through a flange in a sealing way, a pressure-bearing tank is welded on the outer sides of the old wellhead 1 and the fracturing pipeline 2, the pressure-bearing tank is formed by welding a section of seamless steel pipe 3 and upper and lower cover plates 4, the upper cover plate 4 is welded with the fracturing pipeline 2, the lower cover plate 4 is welded with the pipeline at the bottom of the old wellhead 1, the cover plates 4 are of split structures, and the two split cover plates 4 are buckled on the fracturing pipeline 2 and the pipeline at the bottom of the old wellhead 1 and then welded together to form an integral cover plate 4.
The pipeline outside of old well head 1 bottom is equipped with strengthening pipe 5, and two road junction of pipeline welding with old well head 1 bottom about strengthening pipe 5 are split type structure, and the welding is in the same place after the pipeline of old well head 1 bottom is detained to two split type strengthening pipes 5, and apron 4 and the welding of strengthening pipe 5 of lower part, apron 4 pass through strengthening pipe 5 conversion, and apron 4 and the pipeline conversion of old well head 1 bottom are both ends welded junction, improve factor of safety.
The balance hole 6 is formed in the pipe wall on one side of the fracturing pipeline 2, the balance hole 6 is communicated with the pressure-bearing tank, when sand fracturing is carried out, fracturing fluid enters the pressure-bearing tank through the balance hole 6, the pressure born by the inside and outside of the old wellhead 1 is the same, when sand fracturing is carried out, the high pressure has no influence on the old wellhead 1, the safety coefficient is high, the original structure of the old wellhead 1 cannot be changed at the same time, after sand fracturing is finished, the pressure-bearing tank is cut, and the old wellhead 1 of the fracturing pipeline 2 can be removed to recover the original state.
Claims (3)
1. The utility model provides a sand fracturing well head protector, includes old well head (1), its characterized in that: the top of the old wellhead (1) is connected with a fracturing pipeline (2) through a flange in a sealing way, a pressure-bearing tank is welded outside the old wellhead (1) and the fracturing pipeline (2), the pressure-bearing tank is formed by welding a section of seamless steel pipe (3) and upper and lower cover plates (4), the upper cover plates (4) are welded with the fracturing pipeline (2), the lower cover plates (4) are welded with the pipeline at the bottom of the old wellhead (1), the cover plates (4) are of split structures, and the two split cover plates (4) are buckled on the pipelines at the bottom of the fracturing pipeline (2) and the bottom of the old wellhead (1) and then welded together to form an integral cover plate (4).
2. A sand fracturing wellhead protector according to claim 1, wherein: the outer side of the pipeline at the bottom of the old wellhead (1) is provided with a reinforcing pipe (5), the reinforcing pipe (5) is welded with the pipeline at the bottom of the old wellhead (1) up and down, the reinforcing pipe (5) is of a split structure, the two split reinforcing pipes (5) are buckled on the pipeline at the bottom of the old wellhead (1) and then welded together to form an integral reinforcing pipe (5), and a cover plate (4) at the lower part is welded with the reinforcing pipe (5).
3. A sand fracturing wellhead protector according to claim 1, wherein: a balance hole (6) is formed in the pipe wall on one side of the fracturing pipeline (2), and the balance hole (6) is communicated with the pressure-bearing tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320884153.1U CN219412535U (en) | 2023-04-19 | 2023-04-19 | Sand fracturing wellhead protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320884153.1U CN219412535U (en) | 2023-04-19 | 2023-04-19 | Sand fracturing wellhead protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219412535U true CN219412535U (en) | 2023-07-25 |
Family
ID=87239943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320884153.1U Active CN219412535U (en) | 2023-04-19 | 2023-04-19 | Sand fracturing wellhead protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219412535U (en) |
-
2023
- 2023-04-19 CN CN202320884153.1U patent/CN219412535U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |