CN201095970Y - Packer preventing refluence of injected water - Google Patents
Packer preventing refluence of injected water Download PDFInfo
- Publication number
- CN201095970Y CN201095970Y CNU2007200940667U CN200720094066U CN201095970Y CN 201095970 Y CN201095970 Y CN 201095970Y CN U2007200940667 U CNU2007200940667 U CN U2007200940667U CN 200720094066 U CN200720094066 U CN 200720094066U CN 201095970 Y CN201095970 Y CN 201095970Y
- Authority
- CN
- China
- Prior art keywords
- water
- spring
- injected
- communicated
- valve ball
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 95
- 238000007789 sealing Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 abstract description 9
- 238000002347 injection Methods 0.000 abstract description 9
- 239000007924 injection Substances 0.000 abstract description 9
- 238000001914 filtration Methods 0.000 abstract 1
- 230000002265 prevention Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 14
- 238000010992 reflux Methods 0.000 description 4
- 239000010779 crude oil Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Images
Abstract
The utility model discloses an affusion prevention refluence blanking plug which comprises a salvage rod, an upper contact, a spring A, a main body, a spring, a shaft, a cam, an obturating ring, a seal section, a water faucet and a filtering cover; the utility model is characterized in that the main body arranged at the upper part of the water faucet is provided with a water inlet cavity which is communicated with the water faucet, a water outlet cavity that is communicated with a water outlet port is arranged above the water inlet cavity, and the diameter of the water outlet cavity is larger than that of the water inlet cavity; the water outlet cavity is internally and movably provided with a valve ball, and when the hydraulic pressure of the water which is injected from the water faucet is more than the pressure of the oil layer, the water which is injected pushes the valve ball open to cause the water inlet cavity to be communicated with the water outlet cavity, and the injected water enters the oil layer from the water outlet port; when the water injection is stopped, the pressure of the oil layer is more than that of the injected water, the valve ball is blocked off between the water outlet cavity and the water inlet cavity, so as to cause the water which is injected previously not to reflow, thereby not resulting in the pollution of a pipe column caused by stratum impurity.
Description
Technical field
The utility model relates to the downhole tool that a kind of oilfield uses, particularly a kind of anti-water filling backflow blanking plug.
Background technology
Blanking plug is to be used for the indispensable device of water filling in the water injection well, and the blanking plug in the existing injection well downhole flow regulator inner chamber is straight, does not have valve, causes injecting water easily and returns and carry stratum impurity and cause pollution in the tubing string.
Summary of the invention
The purpose of this utility model is not have valve in order to solve above-mentioned blanking plug, the water that causes easily injecting returns and carries the problem that stratum impurity causes the tubing string internal contamination, and provides a kind of and overcome above-mentioned shortcoming, can prevent that the water that injects from returning carries the anti-water filling backflow blanking plug that stratum impurity causes the tubing string internal contamination.
The utility model includes fishing rod, top connection, spring A, main body, spring, axle, cam, sealing ring, seal section, water nozzle, filter mantle, it is characterized in that, main body on water nozzle top offers intake antrum and is communicated with water nozzle, the top of intake antrum offers water chamber and is communicated with delivery port, the diameter of water chamber is movably set with a valve ball greater than the diameter of intake antrum in the water chamber.
Operating principle of the present utility model is: when the hydraulic pressure that injects water from water nozzle during greater than the pressure of oil reservoir, the water of injection backs down valve ball, and intake antrum is communicated with water chamber, and the water of injection enters oil reservoir from delivery port; When stopping to inject water, or the pressure of oil reservoir is when injecting the pressure of water, and the valve ball shutoff and can not reflux the water of previous injection between water chamber and intake antrum, thereby can not cause the pollution of tubing string because of stratum impurity.
In addition, also spring B can be set in water chamber, this spring B contact valve ball shutoff is between water chamber and intake antrum, when the hydraulic pressure that injects water from water nozzle during greater than the resistance of formation pressure and spring B, the water that injects backs down valve ball, intake antrum is communicated with water chamber, and the water of injection enters oil reservoir from delivery port; When stopping to inject water, or the resistance of the pressure of oil reservoir and spring B is when injecting the pressure of water, the valve ball shutoff and can not reflux crude oil and the previous water that injects in the oil reservoir between water chamber and intake antrum, thereby can not cause the pollution of tubing string because of stratum impurity.
The beneficial effects of the utility model are: crude oil and the previous water that injects in the oil reservoir can not be refluxed, avoided crude oil and stratum impurity that tubing string is polluted.
Description of drawings
Fig. 1 is the cross-sectional schematic of the utility model embodiment.
Fig. 2 is installed in schematic diagram in the eccentric injection mandrel for the utility model.
Schematic diagram when Fig. 3 uses for the utility model.
The specific embodiment
See also shown in Figure 1, the utility model embodiment is made of fishing rod 1, top connection 2, spring A3, main body 4, spring 5, axle 6, cam 7, sealing ring 8,9, spring B 10, valve ball 11, seal section 12, water nozzle 13, filter mantle 14, it is characterized in that, main body 4 on water nozzle 13 tops offers intake antrum 15 and is communicated with water nozzle 13, the top of intake antrum 15 offers water chamber 16 and is communicated with delivery port 17, the diameter of water chamber 16 is movably set with a valve ball 11 greater than the diameter of intake antrum 15 in the water chamber 16; As Fig. 2, shown in Figure 3, arrow is represented the flow direction of water filling among Fig. 3, when the hydraulic pressure that injects water from water nozzle 13 during greater than the pressure of oil reservoir, the water that injects backs down ball valve 11, intake antrum 15 is communicated with water chamber 16, the water that injects enters oil reservoir from delivery port 17, when stopping to inject water, or the pressure of oil reservoir is when injecting the pressure of water, valve ball 11 shutoff are between water chamber 16 and intake antrum 15, the previous water that injects can not reflux in the oil reservoir and make, thereby can not cause the pollution of tubing string 18 because of stratum impurity.
See also shown in Figure 1 again, also spring B 10 can be set in water chamber 16, these spring B 10 contact valve balls 11 shutoff are between water chamber 16 and intake antrum 15, when the hydraulic pressure that injects water from water nozzle 13 during greater than the resistance of formation pressure and spring B 10, the water that injects backs down valve ball 11, intake antrum 15 is communicated with water chamber 16, and the water of injection enters oil reservoir from delivery port 17; When stopping to inject water, or the resistance of the pressure of oil reservoir and spring B 10 is when injecting the pressure of water, valve ball 11 shutoff are between water chamber 16 and intake antrum 15, and the previous water that injects can not reflux in the oil reservoir and make, thereby can not cause the pollution of tubing string 18 because of stratum impurity.
Claims (2)
1. anti-water filling backflow blanking plug, it includes fishing rod, top connection, spring A, main body, spring, axle, cam, sealing ring, seal section, water nozzle, filter mantle, it is characterized in that: the main body on water nozzle top offers intake antrum and is communicated with water nozzle, the top of intake antrum offers water chamber and is communicated with delivery port, the diameter of water chamber is movably set with a valve ball greater than the diameter of intake antrum in the water chamber.
2. a kind of anti-water filling backflow blanking plug according to claim 1 is characterized in that: in the described water chamber spring B is set, this spring B contact valve ball shutoff is between water chamber and intake antrum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200940667U CN201095970Y (en) | 2007-07-13 | 2007-07-13 | Packer preventing refluence of injected water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200940667U CN201095970Y (en) | 2007-07-13 | 2007-07-13 | Packer preventing refluence of injected water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201095970Y true CN201095970Y (en) | 2008-08-06 |
Family
ID=39923021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200940667U Expired - Fee Related CN201095970Y (en) | 2007-07-13 | 2007-07-13 | Packer preventing refluence of injected water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201095970Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536152A (en) * | 2012-01-13 | 2012-07-04 | 天津哈德韦尔自控技术有限公司 | Underground digital intelligent water shutoff system of water injection well |
| CN102704890A (en) * | 2012-06-15 | 2012-10-03 | 马中原 | Controllable blanking plug |
-
2007
- 2007-07-13 CN CNU2007200940667U patent/CN201095970Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536152A (en) * | 2012-01-13 | 2012-07-04 | 天津哈德韦尔自控技术有限公司 | Underground digital intelligent water shutoff system of water injection well |
| CN102704890A (en) * | 2012-06-15 | 2012-10-03 | 马中原 | Controllable blanking plug |
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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: 20080806 Termination date: 20100713 |