CN205243471U - Flushing fluid leak protection device - Google Patents
Flushing fluid leak protection device Download PDFInfo
- Publication number
- CN205243471U CN205243471U CN201521050717.3U CN201521050717U CN205243471U CN 205243471 U CN205243471 U CN 205243471U CN 201521050717 U CN201521050717 U CN 201521050717U CN 205243471 U CN205243471 U CN 205243471U
- Authority
- CN
- China
- Prior art keywords
- flushing
- well
- barrel
- seat
- rubber packing
- 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
Links
Abstract
The utility model provides a flushing fluid leak protection device, belong to a oil field production apparatus, it has the barrel, the barrel upper end is fixed with the top connection, there is the external screw thread barrel lower part, there is the disk seat at barrel inboard middle part, there is the valve ball above the disk seat, there is the valve bonnet valve ball top, it is porose on the valve bonnet, there is the feed liquor hole on the barrel of valve bonnet top, there is the seat of honour at barrel outside middle part, there is a rubber packing cup below the seat of honour, there is first baffle below the rubber packing cup, there is the 2nd rubber packing cup below the first baffle, there is the second baffle below the 2nd rubber packing cup, there is the base below the second baffle. This kind of flushing fluid leak protection device when well -flushing, kill -job, leans on the pressure differential effect of well -flushing, well killing fluid water column to open rubber packing cup, hugs closely set inside pipe wall, sealed oil jacket pipe annular space to avoided the leakage of flushing fluid, well killing fluid, improved well -flushing, kill -job effect, prevented that flushing fluid, well killing fluid from leaking in the oil reservoir and polluting, harm the oil reservoir. And is simple in structure and convenient to use, the leak protection is effectual.
Description
Technical field
The utility model provides a kind of field produces apparatus, especially device used when a kind of well-flushing.
Background technology
In Production Wells or job execution process, often need to carry out well-flushing, kill-job construction. Due to factors such as earth formation complexity, the leakage of most wells oil reservoir is serious, causes well-flushing, kill-job weak effect, has both wasted well-flushing, well killing fluid,Well-flushing is pressed, well liquid enters after oil reservoir,Easily cause again oil layer pollution, make to produce oil reservoir permeability reduction, affect oil well productivity.
Summary of the invention
Technical problem to be solved in the utility model is, a kind of flushing fluid leak-proof device is provided, and to reduce the leakage of flushing fluid, alleviates the infringement of flushing fluid to oil reservoir.
The utility model is to realize like this, flushing fluid leak-proof device, it has cylindrical shell, cylindrical shell upper end is fixed with top connection, external screw thread is arranged at cylindrical shell bottom, cylindrical shell middle inside has valve seat, has valve ball above valve seat, and there is valve bonnet valve ball top, porose on valve bonnet, on the cylindrical shell of valve bonnet top, have inlet opening, the outer middle side part of cylindrical shell has the seat of honour, has the first rubber cup below the seat of honour, below the first rubber cup, there is the first dividing plate, below the first dividing plate, there is the second rubber cup, have second partition below the second rubber cup, have base below second partition.
Adopt the flushing fluid leak-proof device of said structure, when well-flushing, kill-job, send into down-hole, be connected to the top of oil well pump bottom tail pipe. In the time of well-flushing, kill-job, differential pressure action by well-flushing, well killing fluid water column opens rubber cup, be close to internal surface of sleeve pipe, sealing oil casing annular space, liquid can not be descending, can only enter oil pipe inner chamber by the inlet opening from cylindrical shell, thereby avoided the leakage of flushing fluid, well killing fluid, improve well-flushing, kill-job effect, prevented that flushing fluid, well killing fluid from bleeding oil reservoir and polluting, damage oil reservoir. And volume is little, lightweight, simple in structure, easy to use, good leak-proof effect.
Brief description of the drawings
Fig. 1 is the schematic diagram of the utility model structure.
Detailed description of the invention
The embodiment providing below in conjunction with accompanying drawing further illustrates the concrete structure of utility model.
As shown in drawings, the flushing fluid leak-proof device of the utility model, it has cylindrical shell 3, cylindrical shell upper end is fixed with top connection 1, external screw thread is arranged at cylindrical shell bottom, cylindrical shell middle inside has valve seat 7, has valve ball 6 above valve seat, and there is valve bonnet 5 valve ball top, on valve bonnet porose 4, on the cylindrical shell of valve bonnet top, have inlet opening 2, the outer middle side part of cylindrical shell has the seat of honour 8, has the first rubber cup 9 below the seat of honour, below the first rubber cup, there is the first dividing plate 10, below the first dividing plate, have below the second rubber cup 11, the second rubber cups and have second partition 12, have base 13 below second partition.
When use, top connection is connected on the oil pipe below oil well pump, and the tail pipe of oil reservoir top is connected on cylindrical shell by the external screw thread of cylindrical shell bottom. When well-flushing, kill job, under the differential pressure action of well-flushing, well killing fluid water column, rubber cup opens, and is close to internal surface of sleeve pipe, sealing oil casing annular space, and liquid can only enter oil pipe inner chamber by the inlet opening from cylindrical shell. In cylindrical shell, valve ball drops on valve seat, and well-flushing, well killing fluid can not flow downward. Well-flushing, well killing fluid enter cylindrical shell and enter on backward more than thereby oil well pump flows to ground.
Claims (1)
1. flushing fluid leak-proof device, it is characterized in that, it has cylindrical shell (3), cylindrical shell upper end is fixed with top connection (1), external screw thread is arranged at cylindrical shell bottom, cylindrical shell middle inside has valve seat (7), above valve seat, there is valve ball (6), there is valve bonnet (5) valve ball top, porose on valve bonnet (4), on the cylindrical shell of valve bonnet top, there is inlet opening (2), the outer middle side part of cylindrical shell has the seat of honour (8), below the seat of honour, there is the first rubber cup (9), below the first rubber cup, there is the first dividing plate (10), below the first dividing plate, there is the second rubber cup (11), below the second rubber cup, there is second partition (12), below second partition, there is base (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521050717.3U CN205243471U (en) | 2015-12-16 | 2015-12-16 | Flushing fluid leak protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521050717.3U CN205243471U (en) | 2015-12-16 | 2015-12-16 | Flushing fluid leak protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205243471U true CN205243471U (en) | 2016-05-18 |
Family
ID=55942551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521050717.3U Expired - Fee Related CN205243471U (en) | 2015-12-16 | 2015-12-16 | Flushing fluid leak protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205243471U (en) |
-
2015
- 2015-12-16 CN CN201521050717.3U patent/CN205243471U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160518 Termination date: 20161216 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |