CN2931779Y - Spraying and decompression device - Google Patents
Spraying and decompression device Download PDFInfo
- Publication number
- CN2931779Y CN2931779Y CN 200620085912 CN200620085912U CN2931779Y CN 2931779 Y CN2931779 Y CN 2931779Y CN 200620085912 CN200620085912 CN 200620085912 CN 200620085912 U CN200620085912 U CN 200620085912U CN 2931779 Y CN2931779 Y CN 2931779Y
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- CN
- China
- Prior art keywords
- decompression
- screen casing
- flow
- cylindrical shell
- open flow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Jet Pumps And Other Pumps (AREA)
Abstract
The utility model discloses a blowout decompressor which is suitable for the operation of fracturing, airlift and blowout, mixing discharge after acidification and the like of an oil-gas well in a down-hole operation system of the oil well. The utility model with a three-stage decompressor mainly comprises a coupling, a decompressing barrel body, a decompressing sieve tube, and a flow-guiding opening, thereby lowering the flow velocity of the high velocity fluid passing outlet by the three-stage decompressor. The structure of the apparatus is that: a center tube is provided inside a larger barrel body, a pipe plug with the same diameter of the center tube is arranged at the outlet of the center tube. A plurality of symmetrical holes are processed on a body of the center tube to change the center tube into a center sieve tube. The highly pressurized fluid can be stage-decompressed by the utility model when passing the blowout decompressor, thereby realizing blowout safety and environmental protection.
Description
Technical field
The utility model relates to a kind of oil-gas field downhole operation device, and particularly a kind of being applicable in the underground work system is to the open flow decompressor of construction operations such as mixing after open flow, the acidifying after various oil gas wells enforcement pressure breaks, the gaslift.
Technical background
Generally in the construction of underground work open flow, the relief line outlet Φ 73mm oil pipes that adopt more, end installs 120 ° of dog leg heads additional and carries out the oil gas water conservancy diversion, because in the time of in the high-pressure oil gas that the well internal return the goes out process relief line, generation pressure gathers the guide functions with 120 ° of dog leg heads, outlet oil gas produces powerful reaction force to pipeline when ejection open flow mouth, cause relief line to form the strong recoil and the power that raises up.There is following shortcoming in above-mentioned open flow device, the one, liquid level flashes liquid to cause around the open flow pond and the pollution of Construction traffic in the high-voltage high-speed fluid impact open flow pond of returning out, the 2nd, because line pressure is too high, shake appears in pipeline, the 3rd, in case outlet is fixing not firm, relief line is out of hand, cause field personnel's casualty accident and large-area environment pollution easily, cause very big harm for personal safety and environment pollution.
Summary of the invention
The purpose of this utility model is to be to realize a kind of simple to operate, the reliable down-hole construction of security performance open flow device, makes the open flow construction to carry out smoothly under the situation of safety, environmental protection.The purpose of this utility model is to realize like this, it is provided with three grades of decompressors, mainly formed by box cupling, decompression cylindrical shell, decompression screen casing, flow-guiding mouth, thereby reach high-velocity fluid through when outlet trend unhurried current, overcome the unsafe factor that the down-hole open flow brings and caused serious consequence such as environment pollution.
Operating principle of the present utility model is: the high-pressure fluid that sprays in the well is through the eyelet on the central tube time, fluid is to 4 direction symmetric motions, the power of 4 directions is offset, in the direction that changes power, continued to increase area of passage, thereby reach the purpose of open flow step-down.Its pressure release campaign is when to be the high-velocity fluid that goes out from the well internal return through relief line enter central tube on the open flow pressure reducer, because closure plate is arranged at the central tube top, enter in the annular space of central tube and cylindrical shell with regard to the eyelet that makes fluid be forced to central tube like this, the area of eyelet is much higher than the interior sectional area of relief line Φ 73mm oil pipe, the fluid flow area increases, and fluid has been finished first order pressure release when transferring axial flow to by radial flow.The outer shroud of central tube has cylindrical shell, the fluid that sprays in the central tube eyelet changes axial flow into by radial flow again when running into cylinder inboard wall, the fluid area that the center goes out between pipe and the cylindrical shell annular space is higher than perforation hole area, circulation area increases once more, has realized second level pressure release.And the fluid between central tube and the cylindrical shell annular space continues to move in the mode of axial flow, when fluid enters cylindrical shell, the circulation area of cylindrical shell is greater than the circulation area between central tube and the cylindrical shell annular space, realized third level pressure release, so continuous increase circulation area, thus reached the purpose that open flow reduces pressure.
Description of drawings
Fig. 1 is an open flow decompressor structural representation
Fig. 2 is decompression screen construction schematic diagram
(1) is that box cupling, (2) are closure plate for screen casing body, (7) for vent, (8) for tubing round thread, (6) for flow-guiding mouth, (5) for decompression cylindrical shell, (4) for decompression screen casing, (3) among the figure.
The specific embodiment
Describe embodiment of the present utility model in detail below in conjunction with accompanying drawing: box cupling (1) internal thread of Φ 89mm is connected with decompression screen casing (2) external screw thread, joint (1) external screw thread is connected with decompression cylindrical shell (3) internal thread by reducer union, decompression screen casing (2) is positioned at decompression cylindrical shell (3) center, form annular space between decompression cylindrical shell (3) and the decompression screen casing (2), vent (7) on the decompression screen casing is gone up evenly at screen casing body (6) and is distributed, when high-pressure oil gas enters decompression screen casing (2), change axial flow into by radial flow, realize decompression for the first time.The oil gas of ejection is sprayed onto through decompression screen casing (2) on the inwall of decompression cylindrical shell (3), and active force is cancelled out each other and realized decompression for the second time.The annular space of oil gas along between pressure reducer body and screen casing outer wall flows to the flow-guiding mouth direction, and when oil gas left screen casing, space i.e. speed became the big decompression for the third time that forms.Flow-guiding mouth (4) is connected with decompression cylindrical shell (3), and flow-guiding mouth (4) gas stream and the flat liquid level of open flow pool inner water acutangulate, and the gas stream of process sprays on the flow direction of design, thereby reaches the purpose of open flow decompression.The utility model can make high-pressure fluid realize decompression step by step through the open flow decompressor time, can reach open flow safety and environmental protection, have simple in structure, easy construction, characteristics with low cost are convenient to apply in oil gas field.
Claims (5)
1, a kind of open flow decompressor, formed by box cupling (1), decompression screen casing (2), decompression cylindrical shell (3), flow-guiding mouth (4), tubing round thread (5), screen casing body (6), vent (7), closure plate (8), it is characterized in that box cupling (1) internal thread is connected with decompression screen casing (2) external screw thread, box cupling (1) external screw thread is connected with decompression cylindrical shell (3) internal thread by reducer union, decompression screen casing (2) is positioned at decompression cylindrical shell (3) center, forms annular space between decompression cylindrical shell (3) and the decompression screen casing (2).
2, open flow decompressor according to claim 1, the vent (7) on the screen casing (2) that it is characterized in that reducing pressure are gone up evenly at screen casing body (6) and are distributed.
3, open flow decompressor according to claim 1 is characterized in that flow-guiding mouth (4) is connected with decompression cylindrical shell (3), and flow-guiding mouth (4) gas stream and the flat liquid level of open flow pool inner water acutangulate.
4, open flow decompressor according to claim 1, the diameter that it is characterized in that box cupling (1) is 89mm.
5, open flow decompressor according to claim 1, closure plate (8) is equipped with at the top of the screen casing (2) that it is characterized in that reducing pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620085912 CN2931779Y (en) | 2006-06-16 | 2006-06-16 | Spraying and decompression device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620085912 CN2931779Y (en) | 2006-06-16 | 2006-06-16 | Spraying and decompression device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2931779Y true CN2931779Y (en) | 2007-08-08 |
Family
ID=38348279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620085912 Expired - Fee Related CN2931779Y (en) | 2006-06-16 | 2006-06-16 | Spraying and decompression device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2931779Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115430534A (en) * | 2022-07-28 | 2022-12-06 | 中国核电工程有限公司 | Rotary injection device for accident pressure relief discharge |
-
2006
- 2006-06-16 CN CN 200620085912 patent/CN2931779Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115430534A (en) * | 2022-07-28 | 2022-12-06 | 中国核电工程有限公司 | Rotary injection device for accident pressure relief discharge |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070808 Termination date: 20100616 |