CN206071469U - A kind of same well oil extraction water injection string - Google Patents
A kind of same well oil extraction water injection string Download PDFInfo
- Publication number
- CN206071469U CN206071469U CN201621113662.0U CN201621113662U CN206071469U CN 206071469 U CN206071469 U CN 206071469U CN 201621113662 U CN201621113662 U CN 201621113662U CN 206071469 U CN206071469 U CN 206071469U
- Authority
- CN
- China
- Prior art keywords
- oil
- pipe
- cyclone separator
- oil pipe
- water
- 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.)
- Active
Links
Landscapes
- Cyclones (AREA)
Abstract
The utility model discloses a kind of same well oil extraction water injection string, including top oil pipe, electric pump and cyclone separator, electric pump is fixed on below the oil pipe of top, electric pump outfan is connected with the feed end of cyclone separator, the underflow opening of cyclone separator is connected with bottom oil pipe, inside the oil pipe of top, stage casing is provided with oil pump sleeve, plunger is slidably arranged in oil pump sleeve, the first valve is provided with oil pump sleeve lower end, the second valve is provided with plunger lower end, its upper end is connected with upwardly extending sucker rod, multiple exit portals are provided with its upper end, bypass pipe is provided with the overfall of cyclone separator, bypass tube end is extended upwardly to and is connected with top oil pipe hypomere.This utility model simultaneously can be realized recovering the oil in same well two kinds of techniques of re-injection after separating with recovered water, the lifting of output water is reduced, is processed and is injected flow process, the ground installations such as separator, water injecting pump, pipeline are reduced, producing cost is significantly reduced, oil production and oil production rate is improved.
Description
Technical field
This utility model is related to a kind of oil-extracting and water-injecting tubing string, and in particular to a kind of same well oil extraction water injection string.
Background technology
With the Persisting exploitation in oil field, stratum energy declines substantially, and oil field product water is also more and more, needs to carry out profit
Again the water separated is injected in stratum to supplement stratum energy after separation.The way that typical oilfield is adopted：First will be raw
The product liquid produced in well is adopted on ground, is opened the oil-water separation in liquid is produced using the separator on ground, the oil separated
Carry out after being delivered to measuring station, multi-purpose station it is outer defeated, and the water separated after treatment by ground injection pump pressurization injection
In water injection well.With being continuously increased for aquifer yield, ground water treatment facilities are increasing, the expense of water process also more and more higher,
The development in oil field is constrained seriously.
Utility model content
This utility model purpose is to provide a kind of same well oil extraction water injection string, can realize same well oil extraction water injection technology,
Reduce to effectively improve oil recovery output capacity while producing cost.
This utility model is achieved through the following technical solutions：
A kind of same well oil extraction water injection string, including top oil pipe, electric pump and cyclone separator, electric pump are fixed on top oil
Below pipe, and electric pump outfan is connected with the feed end of the cyclone separator, underflow opening and the bottom oil pipe of cyclone separator
Connection, inside the top oil pipe, stage casing is provided with oil pump sleeve, and plunger is slidably arranged in oil pump sleeve, in the oil pumping
Pump pump barrel lower end is provided with the first valve, is provided with the second valve in the plunger lower end, and its upper end is connected with and upwardly extends
Sucker rod, and be provided with multiple exit portals in its upper end, be provided with bypass pipe, bypass pipe in the overfall of the cyclone separator
End is extended upwardly to and is connected with top oil pipe hypomere.Producing well after mining the phase produce liquid in aquifer yield gradually increase, oil production
Start to successively decrease, for such problem, by profit is separated after again by the water separated inject stratum in supplement
Stratum energy, the power consumption of the ground water treatment facilities required for the measure adopted in prior art also increase with the increase of aquifer yield
Plus, and then cause the cost of oil well later stage exploitation to increase suddenly；Thus, inventor design one kind can and meanwhile carry out recover the oil and
Water injection technology so that the final water content produced in liquid is minimized, and while ground water treatment facilities power consumption is reduced, raising is adopted
Oily output capacity.
Wherein, top oil pipe, electric pump and cyclone separator are placed in sleeve pipe, and top oil pipe acts primarily as fixed suspension and makees
With, can be consequently used for hanging electric pump and cyclone separator, top oil pipe is provided with oil pump sleeve, oil pump sleeve lower end
The first valve is provided with, and the first valve includes standing valve ball seat and fixed valve ball, in oil pump sleeve, be provided with plunger, its upper end
Connecting with pumping rod, plunger lower end are provided with the second valve, and the second valve includes travelling valve ball seat and travelling valve ball, sucker rod upper end
Ground is connected to, and the lower end of bypass pipe is connected with the overfall of cyclone separator upper end, under bypass pipe upper end and top oil pipe
Duan Liantong；During work, electric pump runs up, and sleeve pipe is inhaled with the suction inlet for producing liquid Jing electric pumps in the oil pipe annular space of top
Enter, produce liquid gradually be pressurized after enter cyclone separator, cyclone separator by product liquid in two kinds of non soluble liquids of profit it is close
Degree is poor, rotates at a high speed the different centrifugal force of generation using liquid and water is separated from oil, then Jing eddy flows in cyclone pipe
The underflow opening of separator is flowed in casing part, and the less oil level of density is in the cyclone separator at the overfall of upper end, by
Bypass pipe is derived to the oil pipe of top, is then done upper and lower stroke by the related plunger of sucker rod again and is moved back and forth in the oil pipe of top
Oil be lifted to ground；The density of water is larger, in the case where high pressure is acted on by Jing bottoms oil pipe after the extrusion of cyclone separator lower port again
Injection water filling layer, so as to realize downhole oil-water separation.Further, by the cooperation of the first valve and the second valve, that is, take out
When moving on beam hanger, travelling valve ball seat is sealed by travelling valve ball, and fixed valve ball is then separated with standing valve ball seat so that through profit
Produce liquid to be towed in the hypomere and oil pump sleeve of top oil pipe after separation, when Liquid output reaches to a certain degree, oil pumping
Bar is moved down, and plunger is moved, and now, travelling valve ball is separated with travelling valve ball seat, and standing valve ball seat is then sealed by fixed valve ball,
And be located at the exit portal for producing liquid then Jing plungers bottom in oil pump sleeve and be lifted to ground, it is to avoid cause when plunger is moved down
Producing during liquid back flows back into bypass pipe in the oil pipe of top affects to produce the normal lifting of liquid, improves oil recovery efficiency.
Preferably, setting up submersible electric machine with oil in the bottom of top oil pipe, the cable of submersible electric machine with oil draws along top tube inner wall
To ground, and submersible electric machine with oil is electrically connected with electric pump, to ensure the stability of electric pump work.
Ball-and-seat is provided with the underflow opening of the cyclone separator, ball-and-seat lower end is provided with bottom oil pipe.In eddy flow point
Ball-and-seat and bottom oil pipe are respectively provided with away from the underflow opening of device, and bottom oil pipe extends downward water filling layer, that is, ensure that
Drained in casing part by the water isolated in cyclone separator is directly outer, while avoiding the water isolated because of the intrinsic pressure masterpiece of sleeve pipe
With and flow back, and then ensure cyclone separator separation efficiency；Similarly, the water isolated can be discharged to water filling along bottom oil pipe
In layer, to promote the oil yield when exploiting in the oil well later stage.
Packer is provided with the bottom oil pipe, the packer will produce layer and water filling layer is separated.Preferably,
Production layer can be separated by packer with water filling layer, it is to avoid occur serious oil reservoir and water layer mixing in sleeve pipe, while can reduce
The working strength of cyclone separator, while the power consumption of cyclone separator can be reduced, realizes reducing the purpose of production cost.
The cyclone separator is at least one.Cyclone separator realizes oil-water separation, preferably, when the oil in sleeve pipe
Content is reduced, and when water content increases, single cyclone separator cannot ensure the oil content at its overfall, now, using many
The individual cyclone separator being serially connected, i.e., can carry out separating for several times to producing liquid, to ensure the cyclone separator positioned at end
The liquid that produces at overfall possesses higher oil content.
Screen casing, sand sediment pipe and plug are sequentially connected in the bottom oil pipe lower end.Preferably, connecting in bottom oil pipe lower end
Screen casing, sand sediment pipe and the plug for connecing, screen casing are used to intercept the solid particle in injection water, and sand sediment pipe and plug are used to precipitate solid
Body granule, the solid particle that can be effectively prevented in injection water are deposited in pit shaft, can avoid the major diameter solid phase in sleeve pipe
Blocking bottom oil pipe, to ensure that the water isolated in cyclone separator is flowed directly in water filling layer.
This utility model compared with prior art, has the following advantages and advantages：
1st, this utility model can be realized recovering the oil and downhole oil-water separation and water injection technology in same well simultaneously, reduce
The lifting of output water, flow process is processed and injected, reduce the ground installations such as separator, water injecting pump, pipeline, significantly reduce life
Product expense；
2nd, this utility model carries out same well oil extraction and oil-water separation and water injection technology, the water quality Jing after cyclone separator is separated
It is close with the water quality of downhole formation, it is not necessary to which that Jing complicated water treatment technology is directly injected into water filling layer by being processed, keep
Production stressor layer, can effectively improve recovery ratio and rate of oil production, greatly reduce cost.
Description of the drawings
Accompanying drawing described herein is used for providing further understanding this utility model embodiment, constitutes the one of the application
Part, does not constitute the restriction to this utility model embodiment.In the accompanying drawings：
Fig. 1 is this utility model structural representation.
Labelling and corresponding parts title in accompanying drawing：
1- sleeve pipes, 2- tops oil pipe, 3- sucker rods, 4- oil pump sleeves, 5- plungers, 6- travelling valve balls, 7- travelling valve balls
Seat, 8- fixed valve balls, 9- standing valve ball seats, 10- cables, 11- submersible electric machine with oils, 12- protectors, 13- suction inlets, 14- electric pumps,
15- cyclone separators, 16- ball-and-seats, 17- packers, 18- bottoms oil pipe, 19- screen casings, 20- sand sediment pipes, 21- plugs, by 22-
Siphunculus, 23- production layers, 24- water filling layers.
Specific embodiment
To make the purpose of this utility model, technical scheme and advantage become more apparent, with reference to embodiment and accompanying drawing,
The utility model is described in further detail, and exemplary embodiment of the present utility model and its explanation are only used for explaining this
Utility model, is not intended as to restriction of the present utility model.
Embodiment 1
As shown in figure 1, the present embodiment includes top oil pipe 2, electric pump 14 and cyclone separator 15, electric pump 14 is fixed on
Below portion's oil pipe 2, and 14 outfan of electric pump is connected with the feed end of the cyclone separator 15, the underflow opening of cyclone separator 15
Connect with bottom oil pipe 18,2 inside stage casing of the top oil pipe is provided with oil pump sleeve 4, and plunger 5 is slidably arranged in oil pumping pump
In cylinder 4, the first valve is provided with 4 lower end of the oil pump sleeve, is provided with the second valve, the plunger 5 in 5 lower end of the plunger
Upper end is connected with upwardly extending sucker rod 3, and is provided with multiple exit portals in 5 upper end of plunger, in the cyclone separator 15
Overfall is provided with bypass pipe 22, and 22 end of bypass pipe is extended upwardly to and connected with 2 hypomere of top oil pipe.
Wherein, top oil pipe 2, electric pump 14 and cyclone separator 15 are placed in sleeve pipe 1, and top oil pipe 2 acts primarily as solid
Determine suspension effect, can be consequently used for hanging electric pump 14 and cyclone separator 15, top oil pipe 2 is provided with oil pump sleeve 4,
4 lower end of oil pump sleeve is provided with the first valve, and the first valve includes standing valve ball seat 9 and fixed valve ball 8, oil pump sleeve 4
Plunger 5 is provided with inside, 5 upper end connecting with pumping rod 3 of plunger, 5 lower end of plunger is provided with the second valve, and the second valve includes travelling valve ball
Seat 7 and travelling valve ball 6,3 upper end of sucker rod are connected to ground, and the overflow of the lower end of bypass pipe 22 and 15 upper end of cyclone separator
Mouth connection, 22 upper end of bypass pipe is connected with 2 hypomere of top oil pipe；
During work, electric pump 14 runs up, by the suction of sleeve pipe 1 and the product liquid Jing electric pumps 14 in 2 annular space of top oil pipe
Entrance 13 is sucked, and produces liquid and cyclone separator 15 is entered after being gradually pressurized, and cyclone separator 15 is mutual not by producing two kinds of profit in liquid
The density contrast of phase solution body, in cyclone pipe rotates at a high speed the different centrifugal force of generation using liquid and water is isolated from oil
Come, then the underflow opening of Jing cyclone separators 15 is flowed in 1 bottom of sleeve pipe, and the less oil level of density is in cyclone separator 15
At the overfall of upper end, derived to top oil pipe 2 by bypass pipe 22, upper and lower punching is done by 3 related plunger 5 of sucker rod again then
Journey is moved back and forth and for the oil in top oil pipe 2 to be lifted to ground；The density of water is larger, by cyclone separator 15 under high pressure effect
After lower port is extruded, Jing bottoms oil pipe reinjects water filling layer, so as to realize downhole oil-water separation.
Further, by the cooperation of the first valve and the second valve, i.e., when moving on sucker rod 3, travelling valve ball 6 will trip
Dynamic valve ball seat 7 is sealed, and fixed valve ball 8 is then separated with standing valve ball seat 9 so that liquid is produced after oil-water separation and is towed to
In the hypomere and oil pump sleeve 4 of portion's oil pipe 2, when Liquid output reaches to a certain degree, sucker rod 3 is moved down, and plunger 5 is moved therewith
Dynamic, now, travelling valve ball 6 is separated with travelling valve ball seat 7, and standing valve ball seat 9 is then sealed by fixed valve ball 8, and is located at oil well pump
The exit portal for producing liquid then 5 bottom of Jing plungers in pump barrel 4 is lifted to ground, it is to avoid cause top oil pipe 2 when plunger 5 is moved down
In the liquid that produces back flow back into the normal lifting for producing liquid affected in bypass pipe 22, improve oil recovery efficiency.
Preferably, setting up submersible electric machine with oil 11 in the bottom of top oil pipe 2, the cable 10 of submersible electric machine with oil 11 is along top oil pipe
2 inwalls cause ground, and submersible electric machine with oil 11 is electrically connected with electric pump 14 by protector 12, to ensure stablizing for the work of electric pump 14
Property.
Embodiment 2
As shown in figure 1, the present embodiment is provided with ball-and-seat 16 at the underflow opening of the cyclone separator 15, under ball-and-seat 16
End is provided with bottom oil pipe 18.Ball-and-seat 16 and bottom oil pipe 18, and bottom are respectively provided with the underflow opening of cyclone separator 15
Oil pipe 18 extends downward water filling layer 24, that is, ensure that and drain into sleeve pipe 1 by the water isolated in cyclone separator 15 is directly outer
In bottom, while avoiding the water isolated from flowing back because 1 intrinsic pressure power of sleeve pipe is acted on, and then ensure the separation effect of cyclone separator 15
Rate；Similarly, the water isolated can be discharged in water filling layer 24 along bottom oil pipe 18, to promote going out when exploiting in the oil well later stage
Oil cut rate.
Preferably, production layer 23 can be separated by packer 17 with water filling layer 24, it is to avoid occur serious oil in sleeve pipe 1
Layer and water layer mixing, while the working strength of cyclone separator 15 can be reduced, while the power consumption of cyclone separator 15 can be reduced,
Realize reducing the purpose of production cost.
Preferably, when the oil content in sleeve pipe 1 is reduced, and water content increases, single cyclone separator 15 cannot be protected
The oil content at its overfall is demonstrate,proved, now, using multiple cyclone separators 15 being serially connected, i.e., can be carried out repeatedly to producing liquid
Separate, to ensure that the liquid that produces at the overfall of the cyclone separator 15 of end possesses higher oil content.
Preferably, the screen casing 19, sand sediment pipe 20 and plug 21 in the connection of 18 lower end of bottom oil pipe, screen casing 19 is used to block
The solid particle cut in injection water, sand sediment pipe 20 and plug 21 are used for precipitation solid granule, can be effectively prevented in injection water
Solid particle is deposited in pit shaft, the major diameter solid phase in sleeve pipe 1 can be avoided to block bottom oil pipe 18, to ensure cyclonic separation
The water isolated in device 15 is flowed directly in water filling layer 24.
Wherein, in figure, arrow represents that liquid is flowed to.
Above-described specific embodiment, is entered to the purpose of this utility model, technical scheme and beneficial effect
One step is described in detail, be should be understood that to the foregoing is only specific embodiment of the present utility model, is not used to limit
Fixed protection domain of the present utility model, all any modifications within spirit of the present utility model and principle, made, equivalent are replaced
Change, improve, should be included within protection domain of the present utility model.
Claims (5)
1. a kind of same well oil extraction water injection string, including top oil pipe（2）, electric pump（14）And cyclone separator（15）, electric pump
（14）It is fixed on top oil pipe（2）Lower section, and electric pump（14）Outfan and the cyclone separator（15）Feed end connection, rotation
Stream separator（15）Underflow opening and bottom oil pipe（18）Connection, it is characterised in that：The top oil pipe（2）Internal stage casing is provided with
Oil pump sleeve（4）, plunger（5）It is slidably arranged in oil pump sleeve（4）It is interior, in the oil pump sleeve（4）Lower end is provided with
One valve, in the plunger（5）Lower end is provided with the second valve, the plunger（5）Upper end is connected with upwardly extending sucker rod
（3）, and in plunger（5）Upper end is provided with multiple exit portals, in the cyclone separator（15）Overfall be provided with bypass pipe（22）,
Bypass pipe（22）End extends upwardly to and top oil pipe（2）Hypomere is connected.
2. a kind of same well oil extraction water injection string according to claim 1, it is characterised in that：In the cyclone separator（15）
Underflow opening at be provided with ball-and-seat（16）, ball-and-seat（16）Lower end is provided with bottom oil pipe（18）.
3. a kind of same well oil extraction water injection string according to claim 2, it is characterised in that：In the bottom oil pipe（18）On
It is provided with packer（17）, the packer（17）Layer will be produced（23）With water filling layer（24）Separate.
4. a kind of same well oil extraction water injection string according to claim 1 and 2, it is characterised in that：The cyclone separator
（15）At least one.
5. a kind of same well oil extraction water injection string according to Claims 2 or 3, it is characterised in that：In the bottom oil pipe
（18）Lower end is sequentially connected screen casing（19）, sand sediment pipe（20）And plug（21）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621113662.0U CN206071469U (en) | 2016-10-12 | 2016-10-12 | A kind of same well oil extraction water injection string |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621113662.0U CN206071469U (en) | 2016-10-12 | 2016-10-12 | A kind of same well oil extraction water injection string |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206071469U true CN206071469U (en) | 2017-04-05 |
Family
ID=58440670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621113662.0U Active CN206071469U (en) | 2016-10-12 | 2016-10-12 | A kind of same well oil extraction water injection string |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206071469U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106894798A (en) * | 2017-04-07 | 2017-06-27 | 中国石油天然气股份有限公司 | Oil extraction system and oil production method |
| CN109973371A (en) * | 2019-05-13 | 2019-07-05 | 西南石油大学 | Tandem double acting injection-extraction pump for high-water-cut oil-producing well |
| CN112483048A (en) * | 2020-11-26 | 2021-03-12 | 东北石油大学 | Backflow liquid supplementing short circuit device for lifting oil well electric submersible pump |
| CN113235378A (en) * | 2021-06-09 | 2021-08-10 | 黄凯 | Asphalt crack pouring equipment for pavement repair |
| CN113530504A (en) * | 2020-04-13 | 2021-10-22 | 中国石油天然气股份有限公司 | Variable flow pressure water injection device |
-
2016
- 2016-10-12 CN CN201621113662.0U patent/CN206071469U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106894798A (en) * | 2017-04-07 | 2017-06-27 | 中国石油天然气股份有限公司 | Oil extraction system and oil production method |
| CN106894798B (en) * | 2017-04-07 | 2019-05-07 | 中国石油天然气股份有限公司 | Oil extraction system and oil production method |
| CN109973371A (en) * | 2019-05-13 | 2019-07-05 | 西南石油大学 | Tandem double acting injection-extraction pump for high-water-cut oil-producing well |
| CN113530504A (en) * | 2020-04-13 | 2021-10-22 | 中国石油天然气股份有限公司 | Variable flow pressure water injection device |
| CN113530504B (en) * | 2020-04-13 | 2023-06-30 | 中国石油天然气股份有限公司 | Variable flow pressure water injection device |
| CN112483048A (en) * | 2020-11-26 | 2021-03-12 | 东北石油大学 | Backflow liquid supplementing short circuit device for lifting oil well electric submersible pump |
| CN113235378A (en) * | 2021-06-09 | 2021-08-10 | 黄凯 | Asphalt crack pouring equipment for pavement repair |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206071469U (en) | A kind of same well oil extraction water injection string | |
| CN101793138B (en) | Hydrocyclone and screw pump combined downhole oil-water separation method | |
| CN205743870U (en) | Submersible electric pump injection pipe post with oil water separator | |
| CN205225215U (en) | A mining devices for two sets of oil reservoir slicing mining | |
| CN108756847B (en) | Oil-water separation unit double-pump injection-production system before pump | |
| CN103967473B (en) | A kind of apparatus and method of exploiting ocean natural gas hydrates well desanding | |
| CN203285416U (en) | Downhole oil-water separation device of double electric submersible pump | |
| CN102784728A (en) | Underground two-stage cyclone separator | |
| CN202451120U (en) | High-flow underground oil-water separation and production-injection device for offshore oil production | |
| CN103742124A (en) | Method for re-separating produced liquid of underground oil-water separation co-well injection and production well | |
| CN104948141B (en) | A kind of same well production-injection device | |
| CN202937296U (en) | Multifunctional coal bed gas exploitation process pipe string | |
| CN104453839A (en) | Large-discharge-capacity oil-water separation automatically flowing water injection system | |
| CN103338827A (en) | Separation of two fluid immiscible phases for downhole applications | |
| CN108979614A (en) | A kind of ground water-oil separating single-well injection-production system | |
| CN102392629A (en) | Pressurizing device for ground drive downhole oil-water separation injection-production system in same well | |
| CN107120105A (en) | A kind of downhole rotational-flow desander | |
| CN107989594A (en) | A kind of down-hole multilevel separation sucker rod pump same well production-injection method and tubing string | |
| CN104389578A (en) | Offshore large-displacement downhole oil-water separation device with chemical agent injection function | |
| CN203175529U (en) | Bottom lead-into type downhole oil-water separating device | |
| CN204041049U (en) | The hydrocyclone downhole oil-water separation device of drive revolving vane | |
| CN202731870U (en) | Production-injection device for down-hole oil water separation | |
| CN104110245B (en) | Hydrocyclone utilized underground oil-water separation device with power driven rotating blades | |
| CN108434787A (en) | A kind of pipe type oil-water separator | |
| CN206220948U (en) | A kind of downhole oil-water separation device with booster-type hydrocyclone |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |