CN2516694Y - Self-excitation wave waterflooding device - Google Patents
Self-excitation wave waterflooding device Download PDFInfo
- Publication number
- CN2516694Y CN2516694Y CN 01269225 CN01269225U CN2516694Y CN 2516694 Y CN2516694 Y CN 2516694Y CN 01269225 CN01269225 CN 01269225 CN 01269225 U CN01269225 U CN 01269225U CN 2516694 Y CN2516694 Y CN 2516694Y
- Authority
- CN
- China
- Prior art keywords
- housing
- self
- nozzle
- piston
- oil pipe
- 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 relates to a self-excited injector, comprising a housing, a piston, an upper joint and a nozzle; wherein, the nozzle (7) is arranged on the housing (8) wall, the upper end of the housing has a pressure conducting hole (4), the inner chamber of the housing is step-like and is provided with the piston (5) with a boss, the inner chamber of the piston is a through hole, the upper joint (1) and the upper oil pipe are connected, the housing and the lower oil pipe are connected, the nozzle (7) arranged in the housing (7) is a self-oscillating cavitating jet nozzle generating self-oscillating cavitating jet in the process of normal injection to generate pressure oscillation and cavitating noise under the ground to change the traditional continuous pressure injection into wave pressure injection to slow down the precipitation of mechanical impurity.
Description
The utility model relates to a kind of water filling instrument that is used for oil field development.
Oil-gas field development is mainly based on water flooding recovery, consider the compatibility problems on stratum, injecting water is treated stratum sewage mostly, this sewage contains a large amount of mechanical admixtures, in long-term injection process, mechanical admixture can be in well precipitates in borehole and the stratum, make the injection channel diminish even stop up, thereby cause water injection rate to descend, to such an extent as to can not satisfy production injection allocation needs, influence oil well production, this phenomenon is more obvious low-permeability oil Tanaka, at this moment just need carry out well-flushing or other de-plugging work measure, stops up to get rid of, recover the well water injection rate, many well stimulations have been studied both at home and abroad in succession, as the artificial earthquake method, the electric pulse method, the hydraulic oscillation method, high enegry gas fracturing, acidification to dispel block etc. are though obtained different effects separately, but, the cost that has in these methods is higher, the complex process that has, and period of validity is short, be difficult to actual popularization, the working solution that has easily forms secondary pollution to the stratum.
By present water injection technology and process study are found, the mechanical admixture precipitation of injecting water is to cause near wellbore permeability to reduce and the water injection rate main reasons for decrease, and water flooding regime for a long time is to continue the pressure water filling always, this water flooding regime helps the deposit buildup of mechanical admixture, results in blockage.
The purpose of this utility model is that a kind of self-excitation wave injector will be provided, in normal the injecting process, thereby produce self-resonating cavitating jet and produce pressure oscillations and cavitation noise in the down-hole, traditional lasting pressure water filling is changed over the surge pressure water filling, to slow down the mechanical admixture precipitation.
The purpose of this utility model is to realize like this, the self-excitation wave injector is made up of housing, piston, top connection, nozzle etc., nozzle is installed on housing wall, the housing upper end has pressure transmission hole, the housing inner chamber is step-like, the piston of band boss is housed, and piston cavity is a through hole, makes to inject the passage of liquid.Use dowel fixes between housing and the top connection, top connection is connected with the top oil pipe, and housing is connected with the bottom oil pipe.The nozzle of being installed in the housing is the self-resonating cavitating jet nozzle.
Describe concrete structure of the present utility model in detail below in conjunction with accompanying drawing.
Accompanying drawing is the structural representation according to self-excitation wave injector provided by the utility model.
The two ends of self-excitation wave injector provided by the utility model are connected with the top and the bottom oil pick-up tube, form by housing 8, piston 5, top connection 1, nozzle 7, sealing ring 3,6, nozzle 7 is installed on housing 8, the housing upper end has pressure transmission hole 4, the housing inner chamber is step-like, and the piston 5 of band boss is housed, and sealing ring 3,6 is housed between piston 5 and the housing 8, piston cavity is a through hole, makes to inject the passage of liquid.Fixing with pin 2 between housing and the top connection, top connection 1 is connected with the top oil pick-up tube, and housing 8 is connected with the bottom oil pick-up tube.The nozzle of being installed in the housing 87 is the self-resonating cavitating jet nozzle, and this nozzle is applicant's patent (ZL94212625.4, self-excited vibration cavitation jet generator) in early stage.The utility model can be used with Y341 series separator, satisfies on-the-spot dispensing allotment construction needs.
Succeeding in developing of self-excitation wave injector will be the revolution of water injection technology, and it will form the near wellbore zone from the source prevention and stop up the injecting process, reduce water injection pressure, improve water injection rate, prolong water injection cycle, reduce operating cost, increase economic efficiency.
Claims (1)
1. self-excitation wave injector, be made up of housing, piston, top connection, nozzle, its two ends connect oil pick-up tube, it is characterized in that, on housing (8) wall, nozzle (7) is installed, the housing upper end has pressure transmission hole (4), and the housing inner chamber is step-like, and the piston (5) of band boss is housed, piston cavity is a through hole, top connection (1) is connected with the top oil pipe, and housing is connected with the bottom oil pipe, and the nozzle of being installed in the housing (8) (7) is the self-resonating cavitating jet nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01269225 CN2516694Y (en) | 2001-10-31 | 2001-10-31 | Self-excitation wave waterflooding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01269225 CN2516694Y (en) | 2001-10-31 | 2001-10-31 | Self-excitation wave waterflooding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2516694Y true CN2516694Y (en) | 2002-10-16 |
Family
ID=33675256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01269225 Expired - Fee Related CN2516694Y (en) | 2001-10-31 | 2001-10-31 | Self-excitation wave waterflooding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2516694Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101705789B (en) * | 2006-07-12 | 2012-11-21 | 中国石油大学(北京) | Hydraulic pulse cavitation jet well drilling method |
-
2001
- 2001-10-31 CN CN 01269225 patent/CN2516694Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101705789B (en) * | 2006-07-12 | 2012-11-21 | 中国石油大学(北京) | Hydraulic pulse cavitation jet well drilling method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1112503C (en) | Ultrasonic water draining method for recovering gas | |
| CN107152265A (en) | The ultrasonic generation system of low permeability reservoir augmented injection underground low-frequency hydraulic pulse coupling waterpower | |
| CN103233923A (en) | Injection device for discharging accumulated fluids in shaft | |
| CN203742544U (en) | Well cementing device for ultrasonically processing downhole hydraulic pulse coupled concrete slurry | |
| CN110043236A (en) | A kind of pulsed hydraulic fracturing pressure-generating device and method | |
| CN104712292A (en) | Ultrasonic blockage removal technology and blockage removal device | |
| CN103726815A (en) | CO2 flooding extraction well shaft flow state determining and parameter optimizing method | |
| CN2516694Y (en) | Self-excitation wave waterflooding device | |
| CN200975230Y (en) | Waterpower pulse vibration cementing guide shoe | |
| CN201053309Y (en) | Down-hole filter for water filling well | |
| CN2475823Y (en) | Low-frequency wave resonant oil recovery device for oil wall | |
| CN108386167A (en) | Horizontal well water pumping gas production completion tubular column and production method | |
| CN105089562A (en) | Preheating variable-frequency injection unblocking process system for water injection well | |
| CN1208808A (en) | Method and equipment for prodn. of thick oil by injecting detackifier | |
| CN2890322Y (en) | Downhole low-frequency vibration generator | |
| CN215057293U (en) | Oil gas is micrite electric heat membrane heating device in pit | |
| CN208966309U (en) | Impulse wave heavy crude producing device | |
| CN204457633U (en) | Ultasonic dredging apparatus | |
| CN204767642U (en) | Mud device is arranged to negative pressure whirl | |
| CN205012973U (en) | Machine pump drainage liquid gas production device | |
| CN201024944Y (en) | Super vibration blockage release and oil increase device | |
| CN206972212U (en) | A kind of double vibration source low-frequency high-power vibrational systems in underground | |
| CN2684945Y (en) | Underwell variable frequency sound wave vibrating instrument | |
| CN208858330U (en) | A kind of water pumping gas production integrating device | |
| CN2083628U (en) | Energy-storage type hydraulic pulse vibrator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |